For those of you who have the JET Stage II chip, I have a few questions.

Do you use premuim gas like you should or does it run ok on regular?
What did it do to your gas milage? Better? Worse? Same?
Was it worth the money in your opion?

Thanks

 

for the stage 2 you need to use the premium. i tried the 89 and it is ok and the 87 is just crap. also you need to change out the thermostat . it is recommened but if you dont it wont hurt anything.it helps out in the milage. it prolongs shift changes so you dont fall out of the torque curve while taking off. its like any other plug and play. drive nice and save gas. or break the back end loose and use gas. but i noticed great improvements with it on the highway. easier to pass when needed.

 

I run mine off of 87 for the most part. Only cuz the price of gas was too much. It'll run just fine, but you won't get the max performance out of it.