Scomer412
Member
Since I tuned with 89. If I run 93 it wont hurt anything I suppose, but will it ad power without another tune?Yes possibly another 20hp. The catback will give a few and then the tuner can bump up the timing a little with some good 93 octane which will get you some hp and tq!
Cat back after all these mods I hope adds at least 5hp, but I’ve never been a big fan other then sound but I’m gonna soon find out.
After I get it back I’m gonna tune with the cat back in about 1 month and add 93. I’ll update what the new numbers are and if it made much difference