atmospheric bov on sr *tryed searching*

[Realnez]

I just put a blitz BOV on the sr and its not liking it one bit. I searched and found that sr's dont like atmospheric bovs at all but Is there anything I can do to stop it from running rich? The car almost stalls out when I come to a stop and backfires louder than a slug out of a 12gauge. My buddy has an atmospheric bov on his blktop and its fine. I have it hooked up to the big vac line that goes to the charcole canister, also my wastegate is hooked up to the small vac line that goes to the charcole canister, is this the proper way to hook this shit up? Let me know guys

thanks

[Silvia_S13]

ur wg should either go off the ic piping or the vac line under ur throttle body. ur bov should get its own vac source off the manifold. not the black canister.

im running open atmosphere ssqv on my sr and its fine. few backfires every now n then but thats it.

[Realnez]

but are the backfires louder than a fucking .45 blasting out the car? I will change the vac lines tomorrow. you think it could be my bov needs to be tightened? like so it doesn't let out so much air?

[mRclARK1]

The largest vacuum nipple on the top of your throttle body... run that STRAIGHT to your BOV, no tees or anything.

It's best to recirc your BOV, but you can get away with running atmospheric. It's best if you have a S-AFC if you do though. My blitz BOV is atmospheric with no problems at all.

[viscid240]

that's normal, I run a blitz also I have same problems. Does not bother me one bit. The stalling is not even a bother, learn to control your pedal/acceleration. Mine shoots hella flames when backfire occurs. Just recirculate or deal with it.

[Realnez]

maybe I need to tighten the top?

[Realnez]

also my motor felt like it was running hotter than normal? the temp gauge was normal but felt hotter

[mRclARK1]

http://www.zilvia.net/f/showthread.php?t=107968

Follow what that thread says to do to your BOV, worked great for me... except I wouldn't cut the spring if I was you.

[Silvia_S13]

the louder the backfire, the bigger the flame. shits owns. dont complain about it, thats the best part lol. tighten the top screw so it doesn't release so much air when ur idle drops. thats where it usually dies. if it keeps dying like crazy then ur bov is to to lose. but dont tighten it to much or ur turbo will surge.

[garbury]

I had the same problem with my ssqv back when I originally installed it. Now it seems like the ecu has gotten used to it or something (I know it hasn't, probably some other variable) because it runs the same vented as it did recirculated only with worse mileage. I think this is because I found some tiny leaks in my couplers and piping and fixed it.
If your sr is running great with no boost leaks, I think you should be fine. give it a boost leak test and adjust your spring.

[benefitx]

are you recirculating it , or running a blow-thru MAF

[CarloSR]

Fire !!!

http://img107.imageshack.us/img107/1226/14505900jc4.jpg

[Silvia_S13]

its open amosphere with a regular pull thru maf.

[CRZY_AZN]

since itz an open bov. u need to get a Safc and do the decal settings. i had the same problem with my apexi n i used it and set it up and i had no problems.

[OBEEWON]

What he said about the decel setting. But you might get some stutter on partial throttle. Best solution is recirc.

[g6civcx]

What he said about the decel setting. But you might get some stutter on partial throttle. Best solution is recirc.

No, the best solution is to eliminate the MAF :p

[Silvia_S13]

seriously, your gonna spend over 200+ to get an safc in and setup just so you can hear a bov? either recirc ur bov or eliminate the maf with a real ecu. or convert to blow-through but iono how sr's like that.

[Team Rootbeer]

or dont be a poon and just lose the bov altogether

[WILDACEX187]

or dont be a poon and just lose the bov altogether

quickest, easiest and most effective way to fix the problem. +1 for no bov :wiggle:

[Slidin240Wayz]

+2 for no BOV

[Realnez]

+3 for no bov haha, its not worth it at all

[tastycakeman]

+4 for compressor surge.


fttftfftftftftt!

[slavetothemuzic]

HKS EIDS (http://www.hksusa.com/products/?id=2175)

The HKS EIDS has been developed to buffer dramatic airflow meter signal fluctuations. By buffering these fluctuations the EIDS prevents engine stalling or stumbling associated with sudden imbalances in air/fuel ratio of airflow meter-equipped vehicles that utilize atmosphere venting blow-off valves.

.........

[GSXRJJordan]

Yeah I've played with the HKS unit, and although that car was better with the unit connected, the only reason it was bad enough for the guy to bring it to me was 'cause he had a nasty vacuum leak and his IACV could have been housing a rat colony... I know tons of people that are running our BOV's to atmosphere on stock ECUs without these dire, world-ending consequences. Keep your IACV clean, vacuum lines in good condition, and watch people's faces when you shift ~

[420sx]

or tighten up the spring and be done

[Silverbullet]

have you figured out how to fix your car yet?

if not, here are the most simplest options:
-tighten your BOV really tight so it surges most of the time for daily driving
-recirculate
-run no BOV

[mRclARK1]

I personally wouldn't want to run with no BOV, not because I want the sound. I just wouldn't feel comfy boosting, and knowing every time I shifted, all that backpressure was slamming into my turbo.

Imagine if you had a lot of gas and just couldn't fart... that's how your turbo feels with no BOV.

[steve shadows]

I personally wouldn't want to run with no BOV, not because I want the sound. I just wouldn't feel comfy boosting, and knowing every time I shifted, all that backpressure was slamming into my turbo.

Imagine if you had a lot of gas and just couldn't fart... that's how your turbo feels with no BOV.

:confused: :ugh: :-/

uuuuuuuuuuh

ok...

most of whats been said makes absolutely no sense.

The main reasone for any BY pass valve or Blow off valve is to relieve pressure in the system when the throttle plate closes to avoid overridding strain from compressor surge on the compressor side of the Turbocharger.

Which over time can wear out the turbo in general and in a couple cases ive seen a bad bov backspin the compressor enough under hard boosting to uncrew the nut/strip it from holding the wheel to the center shaft on its perch. which of course destroyed the induced blades of the wheel by scraping on the inside of the housing.

If you have Constantly Variable Turbine wheel (like the ones used by some WRC and CART cars) iirc thats what they are called, go right ahead! screw bov's and screw by passing.

Unless the car is a full race car and the intake system, as well as teh compressor housing is set up to accomodate the pressure surge and backdraft under heavry load and let off, just use a bov or something.

And if your really having that much trouble with stalling issues, change your plugs, recir you BOV into the stop pipe or make a bung on your intake pipe to allow vaccum to both the crank vent and the bov re circ.

If your running a TO4S housing with the surge protection on your Turbocharger (which i doubt any of you are) I beleive you can tune with a standalone etc and take into account no BOV, thanks to the backup effect of venting surge pressure through the vanes.

http://i8.photobucket.com/albums/a6/RPSport/349_image.jpg
similar to ported shrouds on smaller to4 housing-frm atp-image
hope some of this helps... :hs:

[mRclARK1]

The main reasone for any BY pass valve or Blow off valve is to relieve pressure in the system when the throttle plate closes to avoid overridding strain from compressor surge on the compressor side of the Turbocharger.

Exactly. Compressor surge is hard on a turbos bearings and will ultimately shorten the life of the turbo. Hence why I wouldn't feel comfortable having no BOV... and if you're having problems with stalling because you vent your BOV to atmosphere, then just recirc it. It's easy to do and you avoid compressor surge.

[steve shadows]

yeah I got you. I just re-read what you were inferring in your post.

I mean im not an engineering grad so if someone can prove me wrong on what I just splattered that is fine.

But thats the general idea.

[Silverbullet]

it depends how much surge is present. You think because you have a BOV your not surging? When you let off throttle it makes two distinctly different noises that most people don't notice. The first noise is surge, then its the air release.

One of my suggestion was to tighten to BOV so that it surges for normal driving. That amount of surge will not kill the turbo over night. T25 is a cheap replacement anyways.

[mRclARK1]

it depends how much surge is present. You think because you have a BOV your not surging? When you let off throttle it makes two distinctly different noises that most people don't notice. The first noise is surge, then its the air release.

One of my suggestion was to tighten to BOV so that it surges for normal driving. That amount of surge will not kill the turbo over night. T25 is a cheap replacement anyways.

You're right, there is always going to be some surge present. But a working BOV is definately going to keep it to a minimum, and I think anyone would agree that's a good thing.

[Realnez]

well I checked some shit out today. My BOV stays open WAYYY too long which causes it to stall out/run rich. I tried tightening the spring but it seemed pretty damn tight already and I didn't wanna strip it, but the car was off so does that matter? Im going to run new vaccume lines on saturday and see if I can tighten it down a bit more, is there a certain way to do it? its a blitz bov

[WILDACEX187]

not running a bov on a turbo will cause it to deteriorate faster its true but it will still last u at least 2 years. by that time u'll be bored with it and want bigger

[benefitx]

maybe i should tighten my bov also