with a kn cai and flowmaster with 22s. i just got the predator the newest vers.what tune should i add the 87 or the diablo tune. i have been useing 87 since i got the truck it has 15000 miles on it.i used the diablo tune to start with and filled up with 89 fuel it does not seem like it made any diff ...

i logged my 08rt for the first time. i got anywhere from 0 to 5.00 on st retard at wot most of the time it was no higher than 3.00. it stayed 0 at regular speed.my lt would max to around 3.00 at wot nothing during reg speed but it was mostly 1.5 to 2.0 wot.im on a 93 cai tune.there is a chance my ...