Boost On A Stock Turbo.

[HSV004]

in my other thread people were telling me not to boost it any higher than 12 on the stock turbo.

curious to know what everyone thinks is an ok amount of boost to push through the stock turbo, because ive herd anything from 10-17

car is currently on 10 but contemplating putting its high boost setting as 15.

[Damo_R34]

lol DEFINATELY not 17, and i can say that with 5million% confidence.

The general rule of thumb is nothing over 12psi.

[Krishy]

stock turbo on mine i had it up to 14psi.....but since after 4800rpm the boost would drop down to 12 and held it flat till redline....

so no point boosting it to 14psi....12psi is much safer and definitely not 17psi

[HSV004]

only reason i mentioned 17

was a mate had a 33 and his boost setting was on 17, and his car was stock. and 17 psi lasted until he had an accident.

i thought it was a bit high but he proved me wrong.

[dan_the_man]

series 1 - i ran around on 13.5psi for years. it was fine

12 is a bit safer though

17 is stupid. don't be stupid. stupid is bad

[CRoNic...]

Extended periods on high boost blow the turbo, not just setting it to 17psi.

I could set my turbo's to somehow boost to 30psi, but I might just put my foot down til 10psi then back off... that wont blow the turbo.

But if I kept my foot down at full 30psi boost, that'd blow the turbo.

So your mate wasn't driving his car hard enough to blow the turbo

[Nightcrawler]

Plenty of stock turbos have died at even 10psi when on the track under decent temperature and load .... pretty sure that's how the HPI R34 blew its stock turbo when they did their build-up. 17 is insane and would not last long at all.

[HSV004]

so as a daily driver the highest would be 14 if im not flogging its guts out everytime i drive it?

and its safe to say i drive like a grandma with the very occassional spirited drive

*edited* cheers for the advice, just trying to find the highest/safest amount i can put through it when the car wont be thrashed off its guts on a daily basis

Edited January 8, 2010 by HSV004

[CRoNic...]

My old turbo on my B6T-equipped Mazda could handle 15psi on the odd-occasion. That was even with a side-mount cooler.

Just upped it, flogged it for a few minutes then put it back to 10psi. It happily ran that way for years until the chassis cracked.

And that was a stock little turbo that's only designed to run at 6psi.

[HSV004]

i'm currently looking through the complicated manual/wording on how to create two settings on the boost controller.

[Darren33]

i ran mine on 13 for ages however its back 12 now as i was told it was a bit risky still runs excellent on 12 so i wouldnt go any higher

[HSV004]

off topic a bit, its actually amazing how helpful the import scene is compared to the holden scene towards the new guys.

ive asked several dumb questions on this forum, and had nothing but helpful remarks back.

on other certain forums i wont name, you ask a dumb/basic question and they bite your head off.

so cheers guys.

[Krishy]

so as a daily driver the highest would be 14 if im not flogging its guts out everytime i drive it?

and its safe to say i drive like a grandma with the very occassional spirited drive

*edited* cheers for the advice, just trying to find the highest/safest amount i can put through it when the car wont be thrashed off its guts on a daily basis

as i said before i ran mine on 14psi....coz i hardly hit limiter everywhere.....the car ran on that setup for about 2 years without a problem.....till i upgraded the turbine

make sure though you are putting 14psi through a front mount intercooler instead of those poxy little side mount coolers mate

plus i had other mods to go with it like fuel pump, coilpacks etc and a full tune and it made 214 odd rwkw on a el stocko turbo

[HSV004]

yeah i have the FMIC, bigger fuel pump (unsure what it is just been told its upgraded) and a few other small mods

[dan_the_man]

erm get yourself a PFC.

[Damo_R34]

^ what he said.

[HSV004]

PFC is what exactly.

stilllearning the abreviated terms

[Damo_R34]

Power FC, aftermarket engine management.

http://www.apexi.co.jp/products/electronics/p_fc.html

[DSTROY]

not the cheapest mod though, $1000+ for the computer then about $400/500 for a tune

[HSV004]

aren't they around the $1500 mark.

only starting to get cash flow back after a few months without a job. so not looking to spend big $$ just set.

although i can get the labour for pretty much nothing and get things like bigger turbos/injectors for the price of a carton