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550+afc+FPgreen=what is the max boost?

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2FastGST

Probationary Member
17
0
Jan 14, 2003
VA, Virginia
I wanted to know what is the max boost i can run (Forged Pistons 7.5:1 and Rods) with 550cc, afc and FP Green?
 
The reason why your likely not getting a whole lot of responces to this thread is beacuse it all depends on your tuning and how you setup your car.

Nobody can say X psi will be safe for you, that is upto you and your car. Start at 15psi and tune it and watch your air fuel ratio with a wide band O2 preferably and go from there.
 
It all depends on the rest of your mods. With good intercooling we know the 50 trim will support in the low 20s on pump. However, I don't think the 550s will get you there. At 20 psi on pump I was around miud 80s idc. At 22 I am around 91-92% idc on fic 650s. This is with cams fyi. 550s would be more than maxed out at that point.
 
Now am break-in the car, after am done will try what is the limit of 550 with a wideband. Or I will just get the 660s. Even though, from friend experience, 660 not as easy to tune like the 550 with Safc. Thanks for the replies guys, great info. I will keep you posted
 
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