throwing code when boosting?
 

I have a Z6 w/ greddy turbo kit and custom intercooler setup and currently running an FMU at 5lbs. I tried running check valves to reroute the boost past the MAP sensor but it seems that Im not doing it right. When I boost for a few minutes its ok, but when I lay on it it throws a check engine light then runs rich as hell and idles around 1100 rpm. Ive got no clue. help me please.

Re: throwing code when boosting?
 

o2 sensor?

Try to read the code dawg.

Re: throwing code when boosting?
 

cool, I thought maybe it was because I didnt have a missing link to bypass the boost. Ill try to change out the O2

Re: throwing code when boosting?
 

MAP sensor will always fail, no matter if your engine is cold or warm...

As soon as MAP sensor see's boost, it'll go in CEL....

Re: throwing code when boosting?
 

how manny check valvs are u running each one usualy can only blead off like 3 or 4 psi so u might need more and im almost posative it is ur map i almost never have a o2 senscor and it never affects my manigment what r u running for fuel and ecu

Re: throwing code when boosting?
 

Just keep adding check valves. My old A6 took 4 before it would stop throwing a MAP CEL.