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Old 09-21-2013, 01:20 PM   #31
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Quote:
Originally Posted by Diehardsr20 View Post
Is your cts specific for that year car/chassis? If I remember correctly when I last checked my cts (the 2 prong next to the single prong underneath intake runner number 1(the single prong is just the dash unit, doesn't affect ecu)) at 80f outside before first initial startup was 2.6 kilo ohms to normal operating temps at 0.8 kilo ohms.

You can bypass the knock sensor buy installing a 1 k ohm resistor into the pigtails just until you can figure out the problem. From what I've read nissan knock sensors are constantly sensitive and it gets worse with stiffer suspension, etc. Just keep an eye on those wideband readings. You go lean you grenade your engine.

I had the same problem recently with mpg and I have to say its a vacuum/boost leak somewhere. After I installed an afpr (walbro 255 instal) and found my leak (normal op temps @ idle should be 15inhg), it doesn't take a quarter of a tank to drive 30 miles now. Before finding my leaking pcv I was @ 9inhg at idle with normal temps. Also, with the leak my startups were crap. After the leak was fixed startup improved.
My 2 cents. Hope it helps you.
Thanks man yeah my vac is like -9 right now so should I test the pcv by blocking it off? It rattles but could still be f'd up.
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Old 09-21-2013, 01:22 PM   #32
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I just went out and spent way too long probing my ecu and cleaning connections. i reset my ecu via screw and took it for a drive. No codes for now. I'm sure they'll be back but its running alot better atm. When I get my consult port I'll update again. I think this thread should be archived for future reference.
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Old 09-21-2013, 03:17 PM   #33
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Danger Dorn, the vacuum should read at least a minimum of 18 inhg with stock cams, if its around 21 inhg then its very healthy at idle. Look for diagrams on how to correctly hook up vacuum lines on a boosted SR20. Also do not T anything off the FPR vacuum line.
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Old 09-21-2013, 03:42 PM   #34
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I haven't t'd anything...I have my FPR on the right nipple, Boost gauge on the left nipple, bottom one is plugged, pcv is good, brake booster good. My wastegate (hks 12 psi internal) is plumbed into my hot pipe securely. The only thing in question might be where the oil catch T's there is a microfilter on the part facing you. Like "Filter -Valve cover T- Catch can" but from what I understand this is either done where you put a filter on it or you put a line back into your intake which I may do tomorrow. I cant think of anything else that can be killing my vac leak other than rings/lands but this motor only has 2.5k miles on it with new rings
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Old 09-21-2013, 03:46 PM   #35
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Quote:
Originally Posted by Davidna2fi View Post
Danger Dorn, the vacuum should read at least a minimum of 18 inhg with stock cams, if its around 21 inhg then its very healthy at idle. Look for diagrams on how to correctly hook up vacuum lines on a boosted SR20. Also do not T anything off the FPR vacuum line.
I'm pulling -8 PSI. Which psi to inHg Converter, Chart -- EndMemo

So is my vac actually good?
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Old 09-21-2013, 07:21 PM   #36
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Originally Posted by Danger_Dorn View Post
I'm pulling -8 PSI. Which psi to inHg Converter, Chart -- EndMemo

So is my vac actually good?
I believe the -8 psi you mean 8 inhg, or 8 on the vacuum side of your boost gauge (needle indicator read, analog/manual gauge. Above zero (aka boost) is read in psi, below zero (aka vacuum) is read in inhg). These gauges already make the calculation for you. If the needle points to 5 ABOVE zero your boosting 5 psi. If your idling or cruising along and your needle points to 5 BELOW zero then you are reading 5 inhg. If this is correct and you really are at 8 inhg you have a leak somewhere.

If you have a digital boost gauge that shows readings ONLY in psi (digital l.e.d. display with 2 or 3 digit capability) then your fine (-8 psi (in the sense that it ONLY displays readings in PSI ) is 16 inhg) @ idle/vacuum then you dont have a leak more than likely. (Keep in mind there are digital boost gauges that are programmed to read like the first gauge i described above. It always helps to know what type of gauge your using and how exaclty it performs)

Have you done a compression test of all 4 cylinders? Shouldn't be bad after a rebuild but you never know.



If your pcv is in the valve cover but has some play when moving it around or you can pull it out of the valve cover with literally no force try this:

Pull the pcv T off the valve cover. Clean the exposed port on the T, and the opening where it is inserted in the valve cover.. Take a small layer of electrical tape and wrap the exposed T port once, maybe twice at the max. Dont block the pcv lines or port opening in anyway. Your car has to have a pcv system. Now with a bit of force push the pcv valve port (wrapped in tape) back into the valve cover. Its ok if the tape sort of slides back a little but you should notice a stiffer difference than when you first pulled it out. It should slide back in with small force and the tape acts as a seal between the port going into the valve cover, and the actual valve cover opening itself. If thats what fixes your vacuum leak then you know and will now have to seal it the right way asap (that tape won't last long). A rubber sleeve or a bit of shrink wrap over the end would probably hold longer. Thats what I ended up doing to fix my vacuum leak. Better seal means better vacuum. Hope that helps.



Also just double checking. You said your catch can setup includes an atmospheric vent? :

Oil drain back into engine block ---- pcv T ----- catch can ----- intake boot nipple ()
#########################Valve cover##########################

THIS IS MY CATCH CAN WITH PCV ROUTING. ITS WORKED FOR ME FLAWLESSLY
If I remember correctly on turbocharged vehicles you CANNOT vent pcv to atmosphere like you can on a Naturally Aspirated engine.



NOT TRYING TO FLOOD YOU WITH INFORMATION, BUT HERE IS A WAY TO HUNT FOR VACUUM LEAKS :
you can develop vacuum leaks from small things really. A can of ether is your best friend in a way. Go along spraying it where a vacuum leak could occur (intake manifold gasket, throttle body, bov, intercooler, intercooler piping, all your clamps, etc) Only if nothing else seems to of worked and the compression test passed. If you have a vacuum leak whenever you spray that ether on the vacuum leak you should get a noticeable change in idle. E.G: engine is idleing, normal temps, you spray the intake manifold where it meets the cylinder head by intake runner number 2 with a mist of ether, you notice your idle kicks up for a couple seconds then goes back. If this spot affects your idle from the ether being sucked into the system you have found your vacuum leak, which in this hypothetical case could be a loose manifold or bad intake gasket. This is an all out if everything has failed. Ether is extremely flamible and dousing your engine in it isn't a bright idea but in easy moderation it can help you find your leak.

If you didn't know ether is basicly starting fluid. Also don't spray in a way that will suck ether thru your maf. They tend to not like it

Last edited by Diehardsr20; 09-22-2013 at 01:57 AM..
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Old 09-22-2013, 10:21 AM   #37
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Yes I am running 2 fpr's. No this is not a problem it works just fine. The thing in question is my air intake and oil catch setup.
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Old 09-22-2013, 10:29 AM   #38
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Old 09-22-2013, 10:30 AM   #39
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Old 09-22-2013, 10:31 AM   #40
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Old 09-22-2013, 10:46 AM   #41
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My email posted your reply but here is says "in edit in edit". The copper piece in my hot pipe is my wastegate line. Its sealed well. i charged my system to 18 psi last night and had zero leaks.
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Old 09-22-2013, 11:05 AM   #42
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I have never seen a system that doesn't leak! I can only imagine you did the test correctly.
But.... how long did the system hold 18psi. Oh and is that just intercooler piping. Or intake manifold and everything connected. Because I have people say, they have no leaks and come to find out they do, but I tend to point out, you'll have a pressure drop at the intercooler about 1-2psi and that's considered good.
That's 20psi at about 30secs then at a minute 18psi. just intecooler piping. The entire system never holds more than 10-11 after a minute.

Please tell me that electrical tape isn't covering up a hole?-j/k but serious.

What's the deal with the 2 fpr? I have a setup sorta not really like that, but I drilled out the old oem fpr from a ka, fuel flows straight through it. But your is connected with a vacuum line otherwise a working unit connected to an adjustable unit. If you care to explain why? I'd like to hear it.

Also it looks like the fuel feed line is connected wrong, going into the fpr. pictures are not really clear enough to say for sure, just enough to question. edit: fuel feed looks okay
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Old 09-22-2013, 11:14 AM   #43
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Ok Picture 1 and Picture 2 here show how I have my pcv system with my oil catch can. It's setup as follows :

Oil drain back into engine block ---- pcv T ----- catch can ----- intake boot nipple ()
#########################Valve cover##########################


In picture 3 you can see my vacuum diagram from my Throttle body which is essentially how yours is setup. FPR to the left top nipple. BOV, WASTEGATE (I don't have a hotpipe nipple yet, but you do so your even better), and boost gauge are off the top right nipple. You have your bottom nipple capped. I still have my canister hooked up. either way will work

Picture 4 is where I ended up finding my initial vacuum leak. You see it was just not a tight enough fit between the port end and the valve cover itself. tape tightened the tolerance and made a better fit/seal. I'm still working on an actual piece to work. DO NOT keep the tape there for long. Electrical tape doesn't do well with heat. This was just to get it down the road.

Sorry about the edit post earlier i was posting with my phone and it glitched on me so I had to do this post with my laptop.

EDIT EDIT EDIT
1. I don't know why it inverted the pics. I just looked and they were normal on my phone. windows is refusing to let me rotate the original imagine so your going to have to strain a little bit. ^^^^ He's right by the way no system is entirely perfect leak free! EDIT Hold on finally got them to orient right. reattaching photos

2. See the scorched marks on the side of my cylinder head/valve cover? That's from the previous owner running a pcv setup like you have. He was playing with the car and oil made it into the filter and soaked down to the header. BOOM! big fire. wasn't very pretty. Left me with quite a few things to fix when I bought the car from him.
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File Type: jpg 20130922_103951[1].jpg (547.7 KB, 7 views)
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File Type: jpg 20130922_104026[1].jpg (546.4 KB, 6 views)
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Last edited by Diehardsr20; 09-22-2013 at 11:44 AM.. Reason: PIC EXPLAIN
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Old 09-22-2013, 12:24 PM   #44
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@ Cotbu I had it hooked to an air compressor so i didn'ot really see how fast it lost pressure. The only sound I heard was coming from the valve cover T since blow by is going to happen. Would I be better off running a line from the T to my intake pipe since that's how stock is?

The electrical tape is not a hole. My hood hits there and vibrates so that take helps.

My fuel lines are in fact correct.

The 2 fpr's work this this. you have your stock one at 43 psi. I took the return line and plumbed it into my adjustable which currently is at 43 psi also. If I want I can turn it up to say...50. So now my oem FPR is just basically an adapter. It works just fine I have been driving on it for a few months. It works just fine.

I tested my manifold too via opening the throttle body. Solid w/o leaks. The only other air I heard was passing into the head.

Did I miss anything lol
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Old 09-22-2013, 12:30 PM   #45
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Oh also my valve cover T is not leaking but the filter could be an issue so maybe I'll recirculate it. Is the correct way
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Old 09-22-2013, 01:41 PM   #46
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Quote:
@ Cotbu I had it hooked to an air compressor so i didn'ot really see how fast it lost pressure.
This is important, because if it doesn't hold the pressure then there's a leak. Although some leaks are considered controlled. aka controlled leaks
Quote:
The only sound I heard was coming from the valve cover T since blow by is going to happen. Would I be better off running a line from the T to my intake pipe since that's how stock is?
Yes you would.
Quote:
The 2 fpr's work this this. you have your stock one at 43 psi. I took the return line and plumbed it into my adjustable which currently is at 43 psi also. If I want I can turn it up to say...50. So now my oem FPR is just basically an adapter. It works just fine I have been driving on it for a few months. It works just fine.
You are so incorrect here. an adapter is a straight through fitting. The eom fpr with vacuum connected is a restriction. Most adjustable fpr's adjust well above 50psi base fuel pressure is only 43.5psi
Quote:
I tested my manifold too via opening the throttle body. Solid w/o leaks. The only other air I heard was passing into the head.
You don't need to open the throttle body because of the AACV/AICV allows air to enter the manifold anyway, if you didn't turn off the air compressor? You can't say there are no leaks. Let's say you have an inner tube with a pencil diameter sized hole in it. you can fill it with air and it'll then leak out, that's a certainty, only time. Now if you keep pumping the correct amount of air in the tube it will stay inflated, even though the air is still leaking out.
AKA your leak free test.
Quote:
Oh also my valve cover T is not leaking but the filter could be an issue so maybe I'll recirculate it. Is the correct way
This isn't true either but it should be recirculate as previously stated. Air would just pour out of there the way you've conducted your test. If the filter is not completely clogged. if it was you'd be knocking unless there's a bigger leak somewhere.

Guys we've done made all the stupid mistakes for you already, you should only have to pick a paint color and a wheel size. <--that's me joking after explaining.
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Old 09-22-2013, 04:01 PM   #47
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Cotbu is right about the leaks. You should not have anything coming out of the valve cover. Your PVC valve on the Intake side is probably shot.
And get that double fpr out of there. It could be making your fuel system all weird and respond differently. I have a flow thru adapter and it looks much different.

Quote:
Originally Posted by cotbu View Post
This is important, because if it doesn't hold the pressure then there's a leak. Although some leaks are considered controlled. aka controlled leaksYes you would.

You are so incorrect here. an adapter is a straight through fitting. The eom fpr with vacuum connected is a restriction. Most adjustable fpr's adjust well above 50psi base fuel pressure is only 43.5psi
You don't need to open the throttle body because of the AACV/AICV allows air to enter the manifold anyway, if you didn't turn off the air compressor? You can't say there are no leaks. Let's say you have an inner tube with a pencil diameter sized hole in it. you can fill it with air and it'll then leak out, that's a certainty, only time. Now if you keep pumping the correct amount of air in the tube it will stay inflated, even though the air is still leaking out.
AKA your leak free test. This isn't true either but it should be recirculate as previously stated. Air would just pour out of there the way you've conducted your test. If the filter is not completely clogged. if it was you'd be knocking unless there's a bigger leak somewhere.

Guys we've done made all the stupid mistakes for you already, you should only have to pick a paint color and a wheel size. <--that's me joking after explaining.
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Old 09-24-2013, 08:53 PM   #48
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2 fpr? Is this a new drift trend? I bet it add 50 horsepower.
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Old 09-25-2013, 11:27 AM   #49
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Have you done it? Have you ever seen it done? No ass. It works fine. It runs the same as stock except you have the abilty to increase your fuel pressure with the backup of the oem one. I have two because I though the stock one died so I bought the afpr. It didnt change anything and the adaptor sucked so I put the stock fpr back on and decided to keep both.

Cotbu: Thanks for the tips, I have my consult port coming in today or tomorrow. I had codes 12,13, and 34. MAF, CTS, and KS. Deleted them and they havent come back so now its running better but still lean at idle. I'll be installing the line from my valve cover T to intake this weekend.
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Old 09-25-2013, 11:34 AM   #50
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Have you done it? Have you ever seen it done? No ass. It works fine. It runs the same as stock except you have the abilty to increase your fuel pressure with the backup of the oem one. I have two because I though the stock one died so I bought the afpr. It didnt change anything and the adaptor sucked so I put the stock fpr back on and decided to keep both.

Cotbu: Thanks for the tips, I have my consult port coming in today or tomorrow. I had codes 12,13, and 34. MAF, CTS, and KS. Deleted them and they havent come back so now its running better but still lean at idle. I'll be installing the line from my valve cover T to intake this weekend.
how do you expect to troubleshoot anything effectively when you have these type of non oem setups on a stock engine; and expect it to run stock? as i said before loose these ghetto modifications and put shit back as close as possible to stock if you want to fix your problem. this should be step one and until you do your wasting every ones time
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Old 09-25-2013, 10:04 PM   #51
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No. I do not and would not run it. You are the only person on this planet that do it.
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Old 09-26-2013, 06:52 AM   #52
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Without being rude like those guys, I would recommend like whoever it was above said and just hollow out the OEM if you're going to keep the adjustable. An extra FPR in the system is not so much a backup as it is an additional point of potential failure. The tee in the system adds additional points of potential failure as well. When it comes to regulating fuel pressure, the KISS concept is the way to go.

Just my thoughts.
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Old 09-26-2013, 04:11 PM   #53
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Thanks Mike I will be reverting to stock fpr as long as my fpr is good. If not i will drill it out and use my afpr. I'll be doing my catch can line to my intake this weekend. Also my consult port just came in but I didnt realize my computer doesnt have the correct port so I need to shop around and try to find an adapter. I'll update what happens when I change a few things this weekend.
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Old 09-26-2013, 04:16 PM   #54
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Originally Posted by Danger_Dorn View Post
Thanks Mike I will be reverting to stock fpr as long as my fpr is good. If not i will drill it out and use my afpr. I'll be doing my catch can line to my intake this weekend. Also my consult port just came in but I didnt realize my computer doesnt have the correct port so I need to shop around and try to find an adapter. I'll update what happens when I change a few things this weekend.
USB to rs232 serial adapter. You can thank me later. I recent got my consult all hooked up
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Old 09-27-2013, 01:43 AM   #55
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Also the ecu talk should show codes. Get conzult too its kinda nice and has some different features.. such as timing mode and codes are easier to read i think
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Old 09-28-2013, 08:41 AM   #56
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Irving did you buy yours online or at a store. I want to just go buy one but idk who has them. Ill try best buy then radioshack I guess
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Old 09-28-2013, 10:28 AM   #57
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Bought mine on eBay. It was a little fussy the first time I got it hooked up it wouldn't connect. But after some fiddling with the com ports I got it to connect.
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Old 10-01-2013, 06:39 PM   #58
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Just ordered an adapter cable but now I have a new problem lol. I just cant win

New problem is my clutch or my flywheel bolts came loose so I'll be doing that this weekend. The motor is running very well. I have to drive 20 miles to work on the high way and it pulls well with AFR's just about perfect.

I still have 2 fpr's but I did re route my valve cover t to my intake and I feel more safe from fire now.

But I guess this clutch thing will be fun. Good thing I have a place nearby I can rent a lift since my jack isnt big enough.
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Old 10-01-2013, 06:41 PM   #59
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I never thread sealed them so I guess its my own fault. I try to shift into any gear from neutral and it doesnt let my or it grinds. Also I hear a fair amount of noise when pressing or releasing as if the flywheel is touching the cluch all the time. Awesome
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Old 10-07-2013, 08:28 PM   #60
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So all my bolts were tight. It was my throw out bearing. Replaced it and now its good. Also I used 2 quarts lucas 80w90 and a half bottle of the oil stabilizer...works magic.

I have my consult with ecutalk and a conversion cable and cant get it to connect so I am working with the company to find out why. That's awesome.

I replaced the microfilter on the valve cover T with a line going to my intake...much better.

Still running the 2 fuel pressure regulators. Still running Great.

Also found out that my gauge is in fact measuring -8/-9 PSI. It has a switch on back to switch my reading to bar and it reads -.5/-.6 which in turn is equivalent to -16/-18 In.HG.

BAM BITCH

My car is now running awesome and now my only issue is my front cover leaks under heavy load. Sounds like a job for oil resistant rtv.

Last edited by Danger_Dorn; 10-08-2013 at 10:04 AM..
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