It doesn't matter how much fuel you add by increasing the fuel pressure and adding bigger injectors, the ECU will adapt to the increased fuel in closed loop and bring the fuel back down to where it was before you changed the FPR and injectors. I've done it overy and over, good afr for e few miles then it goes back to above AFR 13.5.Originally Posted by vaspen
I was already at 8-9 psi stockI'm going to have a tuner do all the necessary stuff for the maf as far as fuel I'd rather drop a bigger fpr and injectors and run a tad lean
Believe me I've tried it all.
If you want to unlock the full potential of the engine you need to get the AFR down to at least 12.5 or the ECU will be pulling ignition timing. I will run but you'll be down by at least 20HP.
There are only two ways of doing this:
-bigger injectors and ECU remaped for them (this would be optimal but not many can to this)
-auxilary fuel injectors controlled by a piggyback.
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