i just did a mini me swap. a y8 head on a y7 block. my air/fuel ratio gauge reads rich. all the ay rich and doesnt move at all. the O2 sensor on my apexi turbo timer reads 4.99 and doesnt move either. whats causing this, and is it bad?

 

I had that problem with a Z6A6 minime, for me it ran rich because of the Stock FPR for the A6, I installed the Z6 IM and Fuel rail with the Z6 FPR and now it runs a little lean. Best thing to do is get an Adjustable FPR.

Hope this helpst