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  #1  
Old 01-13-2013, 06:37 PM
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Cold air intake and cat back exhaust additions

Has anyone had any experience adding one or both of these to your WJ to try to gain some HP and MPGs?
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Old 01-13-2013, 08:28 PM
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Re: Cold air intake and cat back exhaust additions

I've noticed no increase in MPG, but have noticed a bit more "go". I've got a K&N FIPK, a bored throttle body, and a Magnaflow muffler...the rest of the exhaust is stock.
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Old 01-14-2013, 11:40 AM
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Re: Cold air intake and cat back exhaust additions

I have a CAI, K&N cone, ported and polished TB, and Thrush high flow muffler (stock system other than that) the difference at the peddal is NIGHT and day... MPG, not really a change when i first did it i was getting about 1 - 2 MPG better but then it leveled off... i noticed better gas milage more witht the fuel filter replacement hahaha but as far as seat of the pants power, i am very pleased with these changes
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Old 01-20-2013, 02:51 PM
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Re: Cold air intake and cat back exhaust additions

I agree, makes a difference but only adds a couple more mpg.
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