I took my car to the dyno to do some datalogging with the new cam before I tune it. The old Speed Inc XE 224/230 tune was set for 26# injectors. The 30# injectors I put in there now are definitely making it run rich. The wideband says that the car is at 11:1 A/F ratio above 5K.

Just out of curiousity, how much power is the car losing by being at 11:1? I have a few other non-tune related issues to iron out (such as pulling vacuum at WOT) but I'd like to get some ballpark of what percentage gains I might see with a proper tune.

Thanks!