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Safe Boost?

RPR33

By RPR33,
in Engines & Forced Induction

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RPR33 Community Regular

RPR33

Posted
Posted

Hey guys I plan on running a to4 turbo very soon and just wanted to get an idea on safe boost.

How much can I run on stock internals?

I don't plan on running to much but just wanted to get an idea....

I have a 3" turbo back system

Front mount cooler

high flow fuel pump

profecb boost controller

Running 175kw on about 9 pound (stock turbo) aiming for around 200-230

I have seen many of you guys running 1bar+..

My aim is for reliability before power.

Cheers!

Russ

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tridentt150v Grand Master

tridentt150v

Posted
Posted

Suck it and see............but probably not! When I upped the specs on my car, the ecu handled it OK, I got more power etc, but it ran rich as all getout. When I changed over to a pfc I went from 200 to 220rwkw and from 200+ to almost 500km to a tank of fuel.

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MBS206 Grand Master

MBS206

Posted
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sinistagtst: If the injectors, fuel pump, Z32 AFM and computer is there, and it is being setup on the dyno, what is a safe but higher level of boost to run? You say the car can handle 300RWKW on stock internals, is that just exhaust and cramming more boost in with a FMIC, or is that a ported head/cams etc as well?

I'd like to know what a "safe" high level of boost is on the RB25DET for when I upgrade turbos.

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sinistaGTR Grand Master

sinistaGTR

Posted
Posted
sinistagtst: If the injectors, fuel pump, Z32 AFM and computer is there, and it is being setup on the dyno, what is a safe but higher level of boost to run? You say the car can handle 300RWKW on stock internals, is that just exhaust and cramming more boost in with a FMIC, or is that a ported head/cams etc as well?

I'd like to know what a "safe" high level of boost is on the RB25DET for when I upgrade turbos.

I know theres a guy here in adelaide with 300rwkw with stock bottom end, running a gt3040, tomei cams, pfc, injectors, z32 and the usuals and thats on 18psi. most ppl who are getting 300rwkw out of the stock bottom end are usually on bout 17-18psi and have cams but no porting etc. really the only safe way to know how your goin is to put it on the dyno and just seeing by the A/F ratio. So dont just go wacking 15 or 18 psi straight into your car get it tuned by someone proper and then you can see how much boost etc you can run. :laugh:

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RPR33 Community Regular

RPR33

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So as long as my air/fuel is right it'll be fine..

As the stock ecu,injectors,afm won't let me go very high..

They will max out before the boost gets to high. so start around stock and slowly increase..

without pushing anything to hard..

Cheers!! :unsure:

(really should have come to that conclusion myself) :laugh:

But still how much will there take??

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R31Nismoid Grand Master

R31Nismoid

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Posted
So as long as my air/fuel is right it'll be fine..

As the stock ecu,injectors,afm won't let me go very high..

They will max out before the boost gets to high. so start around stock and slowly increase..

without pushing anything to hard..

Thats pretty much it :laugh:

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mad082 Grand Master

mad082

Posted
Posted

it isn't so much a rate of how much pressure. a bigger turbo can flow more air at a lower pressure, so the pressure it could take is partly determined by the turbo.

if you run that turbo on 14psi, it will be well within the stock motor's capabilities and give you good power.

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jsman1 Explorer

jsman1

Posted
Posted

mate i tryd a T04 with with frount mount and fuel pump with sotch ECU and it run like a bag of shit i put a link ecu in there and it runs great not got 240 at the rears running 18 psi putin the car back in next week for an external wast gate and other things but the stock internals can handle up to say 22 psi daily my mechanic was running and neva had a prob till he got EPA kick in the ass but yer there a strong motor mate

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RPR33 Community Regular

RPR33

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Yeh its a to4/t3

I was told at 1 bar full boost came on around 3500rpms

Just had the cops pull me over and tell me that my cars not roadworthy....... :)

anyone got a pod box for sale or know where they can be found???? :)

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23PSI Explorer

23PSI

Posted
Posted

GOt r33 gtst - Just got Hi-flow turbs - with power fc, fuel reg and walbro pump, intercooler, full exhaust etc - be prepared to do coil packs aswell you will run 10-11psi safely to answer your question - if you do nothing but be prepared to spend $$$'s on fuel cause your a/f is gonna go off the chart. Would recommend if you are going to do it without pfc etc to get a power run done on the dyno just to make sure you will be ok. bout $90 well spent if you ask me.

Best bet is PFC, Fuel Pump, Fuel Reg and definately look at intercooler if not done already.

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RPR33 Community Regular

RPR33

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not really sure on when it started the last thing done to the car was a high flow fuel pump but I didnt think that would have done it..? would'nt the car know that its running rich due to the o2 sensor? or something???

So shouldnt it adjust??

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