[Hozer 88GTConv]

The reason why his plugs were black is because an FMU typically runs richer to ensure no detonation occurs.

I know some FMU's typically keep the mixture all the way down to 12 : 1 . So at idle, which is what you are at most of the time, you just dump fuel.

That is why I opted for the chip option in lieu of the FMU. Chips are more expensive, but their curves are matched for your exact combo. So you can't just slap stuff on and off with a chip, because you could suffer some issues.

Just to compare, I run 42# injectors with a chip and a 70mm tb and a 90mm Maf. I would definitely run at least 30# injectors if you have some decent aftermarket heads. I just saw that you have some E7's and a E-cam. That big overlap will cause you to run rich anyway.

Detonation = Bad