mizzike2555

I was wondeing if I could safely(read: Not extremely terrible for the car) raise the boost with eith a manual or electronic boost controller. I am stage 1 and have a GIAC flash that hits around 15 psi. Would it be ok for the car or even worth it to raise boost by a small amount, without changing anything else? Also I was think more along the lines of electronic so that I could just raise psi for short periods. What would be a safe psi to boost to? I run 93 octane.

A6turbo530

the car will only run leaner... not good

HIS4

No but you could STFA for an answer to a question that has been discussed many times over and over.

Nigel (no more S4)

yeah, if you go MBC only and add a TCD. Stock fueling supports ~17/18psi with a 5bar fpr.

Roque

Yes, but not a good idea IMHO.

TwentyValveB5+S4

fueling is based on load, which is based on MAF readings, which increase as the boost increases... as such so does the fueling.

Sure, there's a limit to the stock injectors, but they're not maxed out at 15psi.

He won't run lean at 17-18psi.

TwentyValveB5+S4

I ran 17-18psi on all stock fueling. Injectors were maxed out, but it was still running safely.

mizzike2555

Is adding a 5 bar FPR easy and how much would it hurt gas mileage? With out a Wideband A/f gauge is there a safe way to tell if the car suddenly s running too lean?

mizzike2555

ECU that already has raised boost AND adjust fuel timiing pleease send me a link. This is what I want to know. Does GIAC's adjustments allow for more boost safer, or is it no different than stock?

TwentyValveB5+S4

though if you're incapable of doing that, you probably shouldn't mess with your car.