View Poll Results: What performance Part did you install
Cold air intake 0 0%
Exhaust 1 100.00%
Turbo/Supercharger 0 0%
Voters: 1. You may not vote on this poll

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post #1 of Old 08-29-2013, 09:20 PM Thread Starter
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2002 KJ Liberty 
Join Date: Aug 2013
Posts: 38
Power Upgrades for a 3.7

Is there any upgrades i can do to increase power in my 3.7 L, i would like some more boost in the engine and i would like to make it more peppy. any ideas?

"Jeep is America's only real sports car." -Enzo Ferrari

2002 Liberty Limited 3.7
Jgrana is offline  
post #2 of Old 08-29-2013, 09:56 PM
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2002 KJ Liberty 
Join Date: Dec 2009
Location: Colorado
Posts: 8,360
None of the above....................

Re-gear to 4.10's.

'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
tjkj2002 is offline  
post #3 of Old 08-29-2013, 10:15 PM
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2005 KJ Liberty 
Join Date: Jul 2011
Location: Castle Pines
Posts: 3,037
I'd have to vote for none of the above. My power upgrades were new plugs, a recent oil change, and an induction service a couple of months ago. Oops I forgot, I checked my tire pressures. Those things will help restore power you likely have lost over time. Those who think they are hurting on power need only come up here at 6000 feet of elevation to see what you're really missing.
streetglideok is offline  
post #4 of Old 08-29-2013, 10:47 PM
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2003 KJ Liberty 
Join Date: Feb 2012
Location: Attleboro
Posts: 158
Push the pedal harder
kjrenegade03 is offline  
post #5 of Old 08-30-2013, 07:18 AM
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2004 KJ Liberty 
Join Date: Aug 2008
Location: Central OH/ Kilimanjaro,Tanzania
Posts: 5,530
Yes CAI huge waste of $$$$$$$$$$
Muffler does nothing but make more good noises
The last there are none available so forget that
like tjkj stated -regear

04 KJ 4.5 JBA lift, 03 KJ 2.5 JBA coilovers,
tommudd is offline  


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