Re: 98 gt seeking more power
 

whats the "j" mod and how do you do it? i put magnaflow x-pipe wcats on and magnaflow cat back (magnapack) nice sound i think its a little loud but most people say its not . i also put a cai on and my 4:10 gears in not much difference

Re: 98 gt seeking more power
 

Hi.It's too bad you didnt buy a superchips micro tuner.I got mine new for $250 on ebay.96 to 03 mustangs.part #1725.it makes your speedo dead on with up to 456 gears.firmer shifts,adjustable shift points.adjustable fan turn on 160, 180 and stock.you can read codes for check engine light and clear the codes.they give you a pamphlet to tell you all the codes.and oh yea it gives you a 10 hsp boost..performance mode,or you can stay with the 87 octane mode.as far as my best mod..75hsp shot of nitrous.it comes with bigger jets for more hsp but then you have to back off the timing.75hsp you dont have to play with the timing.just check your plugs to make sure your not lean.three hours to put in.$400 for the kit.

Re: 98 gt seeking more power
 

that sucks because i asked the guy at the spedo shop if i could use a tuner to fix the spedo and he said not for a 98 auto. i still think iam going to buy a tuner to help with the shifts.