injector size

cmracing · 03-30-2020, 11:21 PM

Well pbp1, you certainly gave a very detailed explanation!

I find it funny when people think that running a 24lb/hr injector will result in a quicker pass than if he was to run an 80lb/hr injector, both running the same A/F ratio.

I had a friend make a pass with a set of 30's, swapped to a set of 66's, I had already made a fuel map that would be close with the larger injectors, car ran identical. He was very surprised because everyone said it would be slower. He then learned how to time the injector opening event with the larger injectors which he could not do with the smaller injectors.

The only real "disadvantage" to running too large an injector is the idle quality. Running sequential fueling really helps this situation though.

03-30-2020, 11:21 PM	#10
cmracing Member Join Date: Aug 2016 Posts: 173 Likes: 113 Liked 62 Times in 29 Posts	Re: injector size Well pbp1, you certainly gave a very detailed explanation! I find it funny when people think that running a 24lb/hr injector will result in a quicker pass than if he was to run an 80lb/hr injector, both running the same A/F ratio. I had a friend make a pass with a set of 30's, swapped to a set of 66's, I had already made a fuel map that would be close with the larger injectors, car ran identical. He was very surprised because everyone said it would be slower. He then learned how to time the injector opening event with the larger injectors which he could not do with the smaller injectors. The only real "disadvantage" to running too large an injector is the idle quality. Running sequential fueling really helps this situation though.