Question about fuel injection from a newbie

[Dan Fahey]

Originally Posted by Ed Wright

No reason at all you could not alter tuning by altering the fuel pressure with the factory LT1 injectors. I know NHRA Stock Eliminator racers that do it all the time. Turn the fuel pressure up on an LT1 injector, they have a finer mist as well. That is the point. Higher fuel pressure atomizes the fuel better. That is the reason for higher fuel pressures being used. Better emissions is the main reason. Very small power increase are simply a bonus.

I use injectors from FAST in mine.

Was Testing LS1 and LT1 Injectors
The LS1 Injectors misted better than the LT1 using same fuel pressure.
Couple LT1s Injectors clogged up causing fuel delivery issues.
So went with LS1 Injectors...direct replacement for the LT1's.

If you increase the Fuel Pressure and not Change the MAP.
They Injectors will only supply the fuel in the MAP.
May get a finer mist but the PCM would eventually relearn and provide the fuel the computer was programmed.

D