With 37's and lift, custom tuned TS chip, 6637 mod, straight pipe the best I can get is right at 12.8 hand calculated..

 

mods in my sig for the 99, big 3 are chip intake and exhaust. if i run 65, i've seen 19.5. but the faster i go , the lower it goes. at 75 i get about 12.

 

What does everyone mean by custom tunes?

 

The programs are custom tuned by many diesel shops who write their own tunes and sell them. To name a few power hungry performance, tony wildman, gearhead, alligator, kt performance, the list goes on an on.

Sent from my DROID BIONIC

 

KT doesn't do custom. he uses PHP. but still great tunes.

 

i thought he ust to hmm might have gotten that mixed up with another dealer