Originally Posted by
schamsy
Why would I get 42 lb injectors? I'm shooting for 300hp not 500. My truck would get 3 mpg and would smoke like a diesel cmon now.
No, if your truck is tuned properly, it will NOT smoke and get far better than 3 mpg's. I have 62's in mine and it runs no different than the 42's, 30's and 19's I once had in it before, under normal driving conditions...again, it is tuned properly for these injectors and the MAF that I'm running.
Running an FMU will work Ok if your factory air meter doesn't run beyond the range of the ECU. If it does, then the motor will go lean in a hurry, plain and simple.