Hi guys, sry for such a vague question.

I currently have the PFS intercooler and my car is tuned at 12 psi. Its tuned a little rich, 10.8 on top. Would switching to a FMIC (blitz which is smaller than most FMIC) cause enough change in pressure and boost to create a need for a retune?

Thanks, Armen

 

anyone?

 

doubtful that you need a retune

however the only way to know is by reviewing a/f ratios before and after

 

Boost is boost, so 12 = 12 which would not affect anything.

Now the air temp of that boost under the same weather conditions would affect AFRs if the temp is different. But if your Air Temp VS INJ table was lineraized, then it would not matter. But very few people do that.