I searched and did not find this question and I think it may be the problem.

If I actually have 30lb injectors as I was told it did when I bought the car, but te guy who did the tunning programmed it to 24lb because I told him I wasn't sure,(meaning he would have had to change it back), would that make my car run rich? I figure if he did it the other way around, the car would run lean... I am trying to figure it out because I found a shop here local that does LT1 tunes on the dyno and want to try and give them a heads up.

Thanks for the help, car is only getting 10-13 on the hwy and I am a 6 speed

 

yes it will run rich, the 24 gets more pulse width than the 30.

 

Your flowing at least 25% more fuel than the PCM thinks its flowing. The long term fuel corrections can only pull out up to 15% excess fuel before they bottom out at 108. The short terms can pull some more, but they are trying to swing the A/F ratio back and forth to either side of 14.7:1 at the same time, so the correction using the short terms won't be that reliable. Its likely you are running excessively rich, perhaps rich enough to wash down the cylinder walls.

 

Scan it instead of guessing.