I have a '02 Quadcab 2500 w/Cummins 5.9. AEM Brute Force intake,
aftermarket 4-inch exhaust w/o cat, and the Superchips Max 3705
programmer (works pretty good I guess).
I want to put a larger set of (RV type?) fuel injectors in. Does the PCM
need to be flashed back to stock? Does it matter? How does the system
know that the injectors are not stock?
For those of you that have installed different injectors, do you get
better fuel economy? I don't tow very much right now, I'm just looking
for more MPG.
Stock PCM, without the programmer, I get from 16 to 18 MPG. With the
programmer, I get 18 to 20 MPG. In the winter I was getting around 22
MPG, but winter didn't last too long...