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Old 06-26-2010, 08:51 AM
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jet stage 2

2008 JK wrangler X, 3.8 L. Recently purchased Jet stage 2 pcm. Needed intake, high flow exhaust, and 180 degreeg thermostat. While waiting for delivery on the jet pcm I read a lot of reviews and I was thinking I just wasted my money. I installed the exhaust, jet pcm and thermostat yesterday and thankfully I am happy with the investment. I am running 33" tires with only 3.21 gear ratio and I had trouble getting out of my own way. Now I have much better performance. Next project will be changing gear ratio but I am more than satisfied with what I have now.
Jet 2 pcm $211.00
TFX exhaust $229.00
Thermostat $11.00
well worth it
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Old 06-26-2010, 08:58 AM   #2
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can you please share with the rest of us more details about it?

were do you feel the improvement? how differently is it acting? gas mileage difference?

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Old 06-26-2010, 11:25 AM
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jet stage 2

This was just installed yesterday so I do not have info on mileage. I have much better response on the low end. Took a short trip on highway and I got up to 75 mph pretty quick. I have 6 speed manual, on the highway, as soon as I hit an incline I have to downshift to 5th gear. I am hoping this corrected that problem, I don't have an answer yet. Dont really care how fast I go, but don't like slowing down on inclines.
jet stage 2 real easy to install. have to use 91 octane or better, but with all the rewards cards out there I get at least $.10 a gallon off so I don't feel too bad about it.
Also the thermostat needed to be swapped for 180 degree stat. 1 bolt on housing was real hard to get to, throttle body was in the way.
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Old 06-27-2010, 07:28 AM   #4
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Your fuel economy should decrease, running a lower temp thermostat. Fuel likes heat (to an extent) to better atomize- Mark W.
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