Discussion Starter · #1 ·
I upgraded the cat a little, and I have my concerns. Kinda unsure how to feel about it. I did a 2.85 pulley, demon 1000cc injectors, 180 t-stat, unlocked ECU, Trinity T2 tuner, and email tunes, all purchased from HHP. Before upgrades, using the “onboard dyno” in the performance pages, the best I saw was 718hp. After upgrades, which I believe should have added around 150hp, the best I’ve gotten after multiple runs on the street, is 670’s. Makes ZERO sense to me, and I’m completely at a loss right now. I’m thinking of maybe taking it to an actual dyno, hours away, and not free, but I’m almost afraid I would leave more disappointed than what I already am. Yes the car feels quicker, reminds me of my other cars after the tuner makes the throttle blade open wider sooner. Sometimes it feels like it’s maybe pulling a little harder, but not close to what I’d expect from 100 - 150 extra ponies. Have 93 octane tune, no trans tune, shifts amazing from factory. Thoughts, opinions, advice?? Thanks!