how many Psi should i run?

[phi_ho1]

I just swap a red top s13 into my 93 240sx and i know stock boost run at 7 psi. my question is can i run more boost? i have some upgrade on the car. ebc, front mount, intake just a cone, eblow upgrade, downpipe and exhuast, turbo manifold, 255 fuel pump. i have wideband but can't see it so i would have to have my friend drive my car tommorow to see if it lean out or rich. my wideband reading is at 13.7 to 14 on idle now. so just wondering without a tune how many psi i can run?

[fliprayzin240sx]

46 psi...thats what everybody has been running cuz your the first person who have ever asked this damn question.

[EDacIouSX]

46 psi...thats what everybody has been running cuz your the first person who have ever asked this damn question.

friggin noob its 64. god get with the program.

[uthemofo]

you can run 10psi all day no problem. 12 is fine too, 14 is max, I would not pass that. And you have a wideband so just crank up the boost and watch for lean-ness.

late

[burnsauto]

after 15 psi, the t25 is out of its efficiency range.

[SoguRacing]

14 max with stock turbo

[phi_ho1]

you can run 10psi all day no problem. 12 is fine too, 14 is max, I would not pass that. And you have a wideband so just crank up the boost and watch for lean-ness.

late

thank you for the infor very helpfull to me.

[phi_ho1]

and what about tune? will it be ok to run 10 psi without tune?

[burnsauto]

10 is fine. hell..the stock wastegate creeps to 11. lol

[phi_ho1]

ok i'll crank it up tommorow and see what up.

[phi_ho1]

14 max with stock turbo

hey did you ever put the new turbo in your car?

[SoguRacing]

yea, was getting it tuned today but ran into boost controller problems. somehow it isn't getting power.

[zorak]

Umm... IDK if anyone hasn't told you this, but SR20DET motors are naturally aspirated. LOL

You can't run any "PSI" at all.

[zorak]

Oh and your A/F is rich if its that high.

[SoguRacing]

actually, his afr's are just right. a higher number would indicate a lean value and lower a rich value. 14.7 is stoich so he's fine.

[zorak]

Oh rly?

I failed.

LOL

[SoguRacing]

hope the hurricanes wipe you away.

[fliprayzin240sx]

actually, his afr's are just right. a higher number would indicate a lean value and lower a rich value. 14.7 is stoich so he's fine.

Sweet so at full boost at 10-14 psi, he should shoot for 14.7 since its stoich? :duh:

To the OP, if your gonna push your car to 10 psi and you have a wide band, data log it. Just so you can make sure you dont have any lean spots. Just starring at the the damn wide band gauge and looking at numbers wont give you the whole picture of what your engine is doing.

[SoguRacing]

Sweet so at full boost at 10-14 psi, he should shoot for 14.7 since its stoich? :duh:

To the OP, if your gonna push your car to 10 psi and you have a wide band, data log it. Just so you can make sure you dont have any lean spots. Just starring at the the damn wide band gauge and looking at numbers wont give you the whole picture of what your engine is doing.

he said at idle. those numbers are fine for idle.

[uthemofo]

yea idle is totally different than under boost. tune is completely fine for 10psi, I ran my sr like that for almost a year, getting beat on at track, daily driving, whatever, it took it fine. I almost guarantee you wont get any lean spots at 10psi, but heck, if you got the wideband data log that shit to be sure.

but most of all, you HAVE to remember, this is very important........
go have fun with more power! weeee!!!

[phi_ho1]

yea idle is totally different than under boost. tune is completely fine for 10psi, I ran my sr like that for almost a year, getting beat on at track, daily driving, whatever, it took it fine. I almost guarantee you wont get any lean spots at 10psi, but heck, if you got the wideband data log that shit to be sure.

but most of all, you HAVE to remember, this is very important........
go have fun with more power! weeee!!!

yeah, i will do it soon

[phi_ho1]

Sweet so at full boost at 10-14 psi, he should shoot for 14.7 since its stoich? :duh:

To the OP, if your gonna push your car to 10 psi and you have a wide band, data log it. Just so you can make sure you dont have any lean spots. Just starring at the the damn wide band gauge and looking at numbers wont give you the whole picture of what your engine is doing.

i can data log it with my laptop.

[SHIFT_*grind*]

Considering that stock boost with the boost solenoid (which you probably don't have unless you foraged it from a front clip) is 11 pounds, you'll be more than fine at 10.

[240cracker]

how much hp will u get out of 14psi with his setup?

just curious..

[slider2828]

Are you serious? he might get like 250 or the magical number 240 on the Dyno at 14PSI!! Lol....

[!Zar!]

No more than 10psi.

Don't forget the injectors start crapping out too.

[SHIFT_*grind*]

Considering that stock boost is 11 pounds......

...........................


edit: Here's one of eight million threads on the topic. http://zilvia.net/f/tech-talk/208005-whats-stock-boost-s13-s14-sr20det.html

[phi_ho1]

Are you serious? he might get like 250 or the magical number 240 on the Dyno at 14PSI!! Lol....


and how much rwhp at 10 psi?

[slider2828]

Come man.... each setup is different.... Stock 240s at 7 psi is like what 180 on a redtop... ooo another magical number? But come on these numbers are like super ball park. Cause it depends how good the motor is and bla bla bla tuning stuff like that....

14PSI come on !ZAR! DO EEETTTTT... its not like he was running 64psi on it like the first guys in the thread... That is baller status...

[spikNspan]

Umm... IDK if anyone hasn't told you this, but SR20DET motors are naturally aspirated. LOL

You can't run any "PSI" at all.

are you retarded? :ugh:

also... stock boost is 7 pounds I don't know where you guys are coming up with 11 pounds from, but that's wrong.

[slider2828]

Sigh.... get with the sarcasm... and 11psi is what he says when it spikes.... read plz....

[1QUICK4]

get a smaller diameter pulley so you can run more boost.......

[/sarcasm]

[SoguRacing]

get a smaller diameter pulley so you can run more boost.......

[/sarcasm]

hey "no on 8 voter - chris haha" dont bash this guy. He's a local and happens to be a nice guy who owns a body shop.

[1QUICK4]

hey "no on 8 voter - chris haha" dont bash this guy. He's a local and happens to be a nice guy who owns a body shop.

I was just jumping on the hate bandwagon

[SoguRacing]

I was just jumping on the hate bandwagon

i see that. now i'm hating on you.

[1QUICK4]

i see that. now i'm hating on you.

hey

friends don't let friends post noob questions............

[phi_ho1]

11 psi should be close to the lean point i read it from a magazine tune a white 240 a G demension. 10 psi is good for me and how much hp i don't know yet but i will find out soon.

[phi_ho1]

Sigh.... get with the sarcasm... and 11psi is what he says when it spikes.... read plz....

plus 1 for that

[ericcastro]

Is this car for drifting??

If so, go 10 on your boost, then put 55 PSI in your rear tires ;)

[phi_ho1]

hey

friends don't let friends post noob questions............

members in this forum is freaking wack, it just a question. y get crazy about it. got nothing to do?. i will take good advise and the bad ones i can careless.

[phi_ho1]

get a smaller diameter pulley so you can run more boost.......

[/sarcasm]

great :bs:

[phi_ho1]

Is this car for drifting??

If so, go 10 on your boost, then put 55 PSI in your rear tires ;)

don't know yet bro just cayon for now.

[slider2828]

Yah well... There are a LOT LOT LOT of threads about the question you posted. Next time try searching.... I mean your question comes about 2 times a week.... THat is why you got the sarcasm.... At least its funny... I mean about 1 year ago, you would have gotten flamed to alll heck on that question... so things have changed a little...

[ericcastro]

don't know yet bro just cayon for now.

What have you done to it??

just curious so I know what parts im getting when you are selling a shell that was rolled.

Keep it on the track.

Canyons are for posers that are to embarressed to come out and learn on the track. (shut up Kyle/soreballz :) )

If you wanna actually learn to grip or drift your car, come to one of the 626DRIFT events. I will personally teach/instruct you if you show up.:bigok:

And If you can outrun me on HTM in a grip battle, with your SR20 and sweet canyon skillz, vs., my SOHC and track skills, i will buy you lunch too:2f2f: :)

no canyon talk on the forum either.

[redline racer510]

why do people waste their time flaming if you want to give an answer do so, but dont be immature and flame someone just because he doesnt know the answer to it. Sure there is 1,000,000,000,000 threads on this subject but give him a break, everyone was a noob at one point in their life.

[ericcastro]

^If there is no consequence, then why would anyone do anything different the next time around.

This dude got it, search a bit. Lucky for some the red squares aren't given out anymore.

[redline racer510]

Noobs will live and learn. Its a learning process for all of us. About your sr20det 10psi off of a BC should be no problem other mods i would recommend that SR's respond to very well are intake and 3 inch DP and exhaust. Dont switch turbo manifolds or you will loose some bottom-end

[1QUICK4]

Yah well... There are a LOT LOT LOT of threads about the question you posted. Next time try searching.... I mean your question comes about 2 times a week.... THat is why you got the sarcasm.... At least its funny... I mean about 1 year ago, you would have gotten flamed to alll heck on that question... so things have changed a little...

exactly, zilvia is a much nicer place now.

and he did get his answer, at least everyone in here wasn't being a complete dick about it, there was some humor in it.

members in this forum is freaking wack, it just a question. y get crazy about it. got nothing to do?. i will take good advise and the bad ones i can careless.

well in all honesty the "forum members" aren't wack, you posted a question that anyone in here could find at least 15+ threads on in a matter of 2 minutes.

people were just telling you that you need to search, and you got your answer in this thread so [/thread]

[phi_ho1]

What have you done to it??

just curious so I know what parts im getting when you are selling a shell that was rolled.

Keep it on the track.

Canyons are for posers that are to embarressed to come out and learn on the track. (shut up Kyle/soreballz :) )

If you wanna actually learn to grip or drift your car, come to one of the 626DRIFT events. I will personally teach/instruct you if you show up.:bigok:

And If you can outrun me on HTM in a grip battle, with your SR20 and sweet canyon skillz, vs., my SOHC and track skills, i will buy you lunch too:2f2f: :)

no canyon talk on the forum either.

i'm too busy for track even stop going for about 1 year. have a bodyshop to run now but i will set up time to come one day.

[phi_ho1]

Noobs will live and learn. Its a learning process for all of us. About your sr20det 10psi off of a BC should be no problem other mods i would recommend that SR's respond to very well are intake and 3 inch DP and exhaust. Dont switch turbo manifolds or you will loose some bottom-end

dude did you even read my post?

[phi_ho1]

why do people waste their time flaming if you want to give an answer do so, but dont be immature and flame someone just because he doesnt know the answer to it. Sure there is 1,000,000,000,000 threads on this subject but give him a break, everyone was a noob at one point in their life.

yup it just a question.

[!Zar!]

don't fuck with pho_ho1

He has a body shop.

uuunnnffffff

[smelly240]

10psi is what the stock boost is (at least mine was with the boost solenoid - 5+ yrs ago when i had a faggot t25 :P )

seriously tho - 10psi is what most sr's are at with th eboost sol in place. if u want more than that just get a better turbo.

[SleepR 240sx]

11psi is stock....you'll be fine nuff said