Jet module or K&N air filter?
Where do you go to get an upgrade on the axle ratio and how much should it cost?
Yeah, mine is 3.21. :sad:
Originally Posted by WranglerChuck
Your story sounds like mine! I got the bigger tires knowing that there would be a difference, but after fighting to keep this vehicle going exactly 70 miles and hour with the 6th gear, I need to change something.
how about gears? change to FIFTH gear... problem solved
Your story sounds like mine! I got the bigger tires knowing that there would be a difference, but after fighting to keep this vehicle going exactly 70 miles and hour with the 6th gear, I need to change something.
how about gears? change to FIFTH gear... problem solved

I purchased the Jet Module thinking it was the best HP for the Buck value (they claim 25Hp). Mistake on my part, hardly know the difference and waste of 250+ bucks. Maybe it does need additional mods to notice. When it arrived, seemed to be a generic Chrysler module and not Jeep specific.
My 2 cents....
My 2 cents....

I just did both on my Jk.
I have 33's.
I used the Jet PackII and cold air, Air force air jam. Results right away. Even better after a few days. I've got a 6 speed. I've heard that it's not as noticable on automatics.
I think it was a good investment.
According to the specks i added about 37 - 40 hp. I don't have access to a dyno tester to know if that is true or not but I did feel more power.
I have 33's.
I used the Jet PackII and cold air, Air force air jam. Results right away. Even better after a few days. I've got a 6 speed. I've heard that it's not as noticable on automatics.
I think it was a good investment.
According to the specks i added about 37 - 40 hp. I don't have access to a dyno tester to know if that is true or not but I did feel more power.


