How Many Degrees Before Detonation? MPG Problems

[LoweredDC4]

No need to run on premium either. Just use regular.

 

[rcj]

Why in gods name would you run different injectors without a tune. swap back to stock fuel system and I bet the mpg fixes itself like magic.

That's my point. Idk what size they are. Hell they could be the stock LS injectors. Point me to a place where I can find some stock injectors and I'll be sure to buy them

 

[Nick_C78]

Junk yard.

 

[DonJulio]

What numbers are we talking here?

Any compression higher than the ecu is designed for will cause the ecu to overcompensate to run smooth and funk up your ignition/fuel/afr.

Basicly in a limp mode.

If your burning too much fuel it sounds like it's running your injectors in a higher cycle and will probably burn them out soon.

So your dealing with inefficient fuel combustion, Ontop of spark plugs that will probably foul soon and aren't designed for high compression.

Invest in some real tuning equipment.