How Much Boost Is Safe

[The Bogan]

NEW TO SITE , opps ill stop yelling, Hi Marks my name and ive just bought a R33, Blows the doors of my vs 5l 5 spd ute, but here is the problem ,its got a boostswitch ,7 psi off ,about 14 psi when i hit the switch, and about 20 psi when i wind the knobby thing from let to right . What is a safe psi to run it at, the turdo is standard but the guy i bought it of says it has been flowed { im a old barstard who is used to n/a style cars i.e v8,s } so i dont know if this is good or not or if this is ok to run at 14 psi or more. I like the power at 14 psi but will my turbo go to the gods if i run on that consistantly. Also now that i got someones attention is a blow of valve that vents to atmo a defect and if so it i plumb it back into the intake will i lose power, gain power, or stay the same.{i hope i can keep it cause it sounds sweet, put-ttttsssssssss }

Thanks for any help you can give me. And yes i like to flog the r33 when ever i can {when in dought gas it}

[DRD-00F]

WELCOME!

Do a search

This has been covered so many times I know it off by heart

10 to 12 psi is considered "safe". I run that, thing goes fine

IF it has indeed been hiflowed (I would get someone in the know to check this for you, someone in the club enarby to you will be able to help ) then more the 14psi is certainly possible.

The BOV laws really depend on which state you're in. In NSW, they are illegal to have them venting to the atmosphere, and they also cause stalling issues with the standrd Air Flow Meter, and the car runs better when it is plumbed back in

[r33cruiser]

how about MAX boost for ENGINE and HEADGASKETs ????

for those of us with aem turbo's

wats your reliable max boost?

Edited June 18, 2008 by r33cruiser

[boostin_r33]

If it has been hiflowed they can exceed 14 not sure what the maximum is but it's better to get some one to check it out while u keep running the same boost!

If it was a standard turbo it would have spat along time ago

[The Bogan]

Thanks mate, its going in the shop tomorrow to have oils, fluids and plugs replaced so ill see if he can set it for 12 psi and re-plumb my bov, i like giving it a good hard thrash but i dont want it to go to the gods, pity i live in NSW as it sounded ubber cool with the bov venting to atmo. Im also a bit of a spastic when it comes to computers and searching forums { my missus has just showed me how to google and finding this forum is like being kissed on the dick, can i say that, opps] so i appoligise for not looking around more, spent the last few days looking at the free HP posts though, made a nice little shroud to cover up my apparently illegal pod filter.

Again thanks for the help, now all ive got to do is remove the hicas and stop the air bag light from staying on as it has a momo wheel.

[DRD-00F]

Ahh, where abouts in NSW?

There are lockbars for the hicas, it's the simplest option...

[The Bogan]

A lock bar is my next purchase, will that make the hicas light come on and if so do you know how to disconnect it or will the shop do it [ ALL MY WORK ON THE CAR IS DONE AT SHOPS, yes im lazy ]

[The Bogan]

Sydney, West.

[Strik3r]

if it's a highflow job with steel wheels, it's good for 18psi. But if your still running stock engine management, your going to run into all sorts of problems very quickly. I'd keep the boost low for now, pay someone to pull the turbo off and check that its a proper high flow job in good condition and find out what ECU you have.. if its aftermarket, take the car to a tuner and get em to tune it to run on 18psi. if its not aftermarket, thats probably your next upgrade. If your still running stock injectors, they are going to run out of puff at around 14 psi on the highflow as well. same with stock fuel pump..

in short, you need to get it checked out by someone in the know so you dont risk doing damage to the engine !

[The Bogan]

Thanks again, its got a piggy back comp but i dont know about the injectors, the shop guy will tell me tomorrow, 14 psi is gold and ive given it a canning at that , but 18 psi, wow, the difference from 7 to 14 was huge so i assume 18 will be anouther big step, if shes got the injectors to feed her the go juice.

[nizmonut]

how about MAX boost for ENGINE and HEADGASKETs ????

for those of us with aem turbo's

wats your reliable max boost?

how longs a piece of string.

[The Bogan]

synthetic or a natural fiber. .

[r33cruiser]

how longs a piece of string.

use a measuring tape.

+1 for increasing post count FTL

[R33GOD]

just get new gaskets, plenum, manifold ect. run whatever boost u like. as long as she dosent knock or ping ull b right

[The Bogan]

I dont think that gaskets, plenum or a manifold whould have anything to do with the structual integrity of a turbo that is exceeding its safe boost range. Im more worried about it running lean or just going bang from overpressure.

[tridentt150v]

Who'd you get the car off? if they are on here and known by other members, you can get the low down.

Names and addresses aren't cool to post, but the general area and car description etc might help, jus a thought.