Question on PSI

[GeKo]

Im just curious on how much PSI my car can handle, heres the mods:

272 HKS Cams
20G "Greddy" Turbo .60 trim i believe.
Apexi SAFCII
800CC AMS Injectors
255 Walbro fuel pump

Now, i bought my car from my friend, who had it tuned at AMS: AMSPerformance.com

They specialize in 4G63T Engines. He didnt tell me much about what it was tuned to besides, the fuel is all the way up and my car runs rich.

Im running 20psi no problem, but im afraid to turn it up. He said hes ran 23 psi before with no problem. I just hate the fact I didnt do what the car has done. You know? If you do it then you know what is actually done and what isnt.

Im not going to turn it up for awhile, since i havnt changed my oil in awhile Sucks having a car lowered 1" off the ground and its been VERY cold outside. Im in the need of an oil change and new ngk plugs, then ill do some boosting but right now im just needing some advice.

 

[Black95awd]

23 PSI should be fine. what are you running for internals?

 

[MrBoxx]

A: Your car needs an AFPR if it's going to run that Walbro 255lph pump.

B: You're going to need something better than an SAFC to run those 800cc injectors. This isn't a point of contention here; it's a fact.

C: You need a logger before you start asking how much boost you can run. Then, once you look at the logger and see what the hell's going on in your engine, you can make your own decision how you run your car. None of us can tell you how much boost to play with, or even what's SAFE, because we have NO clue what is going on with your car.

 

[absolute_DSM]

I just hate the fact I didnt do what the car has done. You know? If you do it then you know what is actually done and what isnt.

Then why did you buy the car?

MrBoxx covered everything you need to know.

 

[viprez586]

+1 for MR boxx. Couldn't have said it better

 

[GeKo]

whats the best logger? DSMLink?
Im keeping it the way it is because i DONT know whats going on.
I just wanted some advice And it was help full, so i need a logger.

Are they pretty easy to use ?

 

[MrBoxx]

You already have a 95, so chances are you have an Eprom ECU. If so, and you can check easily enough, you should definitely invest in DSMLink. That solves your AFC problem AND your logger needs.

 

[droppinbottom]

I think the question should not be how much psi can your car handle but how much power can your car handle. 20psi on a 16g is not like 20psi on a 20g. On a good tune a car using stock internals should be capable of 450whp. However much boost it takes you to get to that point depends on each vehicle and the tune you use.