Trail Jammer install/writeup and review - Page 6 -
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post #76 of 86 Old 05-26-2008, 11:34 AM
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2006 LJ Wrangler 
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Location: Humble
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Did anyone see any MPG improvment with this Mod?
I am looking for some more HP and a few MPG gain would also be nice.

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post #77 of 86 Old 06-13-2008, 10:55 AM
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1997 TJ Wrangler 
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Location: Grand Rapids
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Will this fit on a 2.5L 97 as well?
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post #78 of 86 Old 06-14-2008, 02:18 PM
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2006 LJ Wrangler 
Join Date: Jul 2005
Location: Hutto, Texas
Posts: 1,350
Originally Posted by kittyhawk View Post
Did anyone see any MPG improvment with this Mod?
I am looking for some more HP and a few MPG gain would also be nice.

didn't change my MPG, mine stayed the same, (worse if your like "testing" these kinda mods) but helped out on the highway with larger tires a lot.

2006 Solar YELLOW UNLIMITED-6-Speed
-Rusty's 2" spring kit w/Skyjacker Hydro 7000 shocks, 1" coil spacers up front and 3/4" coil spacers in rear, 32" BFG AT KO's on Ravines
-Spidertrax 1.25" wheel spacers, Clear Turn Signals and Markers, Custom Front Bumper Hoop with upgraded hooks, Delta 50 Flowmaster, Code Alarm CA-670 Paging-Alarm with Motion Detector, K&N FIPK, JKS Discos, Procomp LCAs, Airaid TBS, Tuffy 055 rear section sub console, 4-Hella 500's, Fumoto Oil Drain Valve, Olympic Reverse-a-bars, Delta Headlight kit with black bezels, Edge Trail Jammer kit, Smittybilt Classic Tire Carrier, WARN Oil Skid, Skid Row steering skid, JKS adj. rear track bar, RC front adj. track bar.
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post #79 of 86 Old 07-23-2008, 12:44 AM
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1998 XJ Cherokee 
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The way I see it if it dont hurt MPG and your getting the bigger tires to move better and quicker then it is helping the MPG.

Its taking less fuel to get up to those highway speeds quicker as before it was taking 2 seconds more on the same ammount of gas.

So you can be a little heavier footed and wont hurt the economy. Thats good.

Im seriously thinking about holding off on the bumper for a couple weeks and going with whole kit for my 98 XJ.

Anyone have any good thoughts about them on XJs? Same engines in the TJs so I figure the same results but just wondering.

-1998 XJ Sport 4.0L-
-6.5" RE/Rustys/RC lift, Custom Y-link LAs, custom shackle relocation boxes, Pro Comp/RE monos-
-315/75/16 Toyo MTs on Moabs-
-Shaved 8.25 w/HD shafts/Auburn LS/4:10s, HP30 w/ Lock-right, sliders, HD track bar bracket, AA SYE, AppA TC skid, AFE intake, Magnaflow exhaust, Bored TB-
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post #80 of 86 Old 08-27-2009, 09:10 AM
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2000 XJ Cherokee 
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So guys, any comments on the kit mounted on a 2000 XJ ???

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post #81 of 86 Old 08-27-2009, 11:16 AM
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1999 TJ Wrangler 
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I had this kit on my 99 TJ 4.0L. Since I've sold it, I can definitely tell a little loss in power. But I needed money for tires, so this mod had to go...
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post #82 of 86 Old 07-21-2010, 07:34 PM
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2006 LJ Wrangler 
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Location: Newbury Park
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I just installed this kit and there's a definite improvement. The throttle response was noticably quicker and the Jeep pulls through 1st & 2nd harder than before. Additionally, whereas my 6th gear was all but unusable beforethe installation (haven't regeared yet), I can now hold 6th gear on the highway without having to bury the skinny pedal.

After the installation I did a 2-mile test run around the neighborhood and as noted in the installation instructions the idle was somewhat high (1400 RPMs). But after a couple miles and stopping and restarting it adjusted back to normal.

I then let the Jeep sit for about an hour while I went out for lunch with the wife, and when I got back it wouldn't start. After 3 attempts it finally fired but ran very rough. The check engine light came on, and the code P0107 was thrown - MAP sensor low voltage. I unplugged the Edge computer, returned to the factory wiring, and everything was fine. And then re-plugged in the Edge and started it again - everything is running great now. Did another test drive and no problems.

Any idea why it threw the code? Possibly a loose plug on the computer?

2006 Black Unlimited 6-speed, Rubicon Express 5.5" Long Arm Kit
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post #83 of 86 Old 12-02-2010, 02:16 PM
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2006 LJ Wrangler 
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Location: Gainesville, FL
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In regards to the whistling sound, I purchased mine this year and it still makes that awful noise when i start it up, but once it warms it goes away and don't hear anymore. imho it is well worth the money as I now have more power and response for around town and highway driving with my 35's and slightly better mpg as well. Good initial write-up this is what swayed me to make the purchase and I too ordered mine from Thoroughbred Diesel.
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post #84 of 86 Old 12-03-2010, 01:21 PM
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2006 TJ Wrangler 
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Location: California
Posts: 33
I also obtained a noticable throttle response with this kit. However, the throttle is a little to "goosy" for rock crawling. I find myself having to feather the throttle when going over obstacles. Sometimes this causes me to lurch forward, which is not always a good thing. Anyone know if there is a way to tune down the module when I need to?
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post #85 of 86 Old 12-31-2010, 09:41 PM
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2000 TJ Wrangler 
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Location: Miramichi
Posts: 44
I just installed this kit today. Was very easy to install, just time consuming if you want perfect. After installing it wouldnt start unless i hit the throttle, but after the 6th time and holding the gas for moments it started to idle at 700 but a little jumpy. I noticed a huge gain in throttle response, in the first few gears its real jumpy a little too jumpy. I forgot to reset the battery, and my check engine light came on, so im assuming ill do that tomorrow and fix a few things. I got the Module, CAI, and Throttle Body definitely worth the money.
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post #86 of 86 Old 03-14-2011, 05:11 PM
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2006 TJ Wrangler 
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can anyone put up a video on youtube or something of the "whistle" this product makes?? i just want to know how loud it is. personally it wouldnt bother me, i would like to order this eventually just wondering how loud it actually is.
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