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Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > WK Grand Cherokee & XK Commander Forum > Okay....... next on the list!

The Original 3/8" Ruffstuff Diff Cover!Ruffstuff Axle Simple Swap Kit!The Ruffstuff NOT Universal 4 Link Kit!

Unread 11-09-2012, 05:17 PM   #1
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2006 WK 
Join Date: Jun 2012
Location: Boiling Springs, PA
Posts: 260
Okay....... next on the list!

Okay all... Just as an update, I have a 2006 4.7L. I have done the RC lift, tires, K&N intake and magnaflow exhaust. I have noticed that since the bigger tires, my transmission is even more confused than it was before. Meaning it searches for gears in my mountain/hills area. I've noticed that if I hit the tow/haul button, the tranny is much more solid and overall less sluggish.

i expected some power loss for the bigger tires which is okay with me, but I want a little of the power back. The magnaflow didn't make a vast improvement as I expected but does sound much better. I am not looking to spend a fortune so headers are out of the question....

I was thinking maybe a throttle body spacer and possibly a tuner. I've read all over this forum that most of the tuners are a complete waste of time. I also saw a post regarding an SCT tuner which is what I had for my diesel truck. The tuner was amazing with custom tunes but I called SCT and they do not make anything for the 4.7..... Any of you masterminds have thoughts or recommendations regarding the throttle body spacer or a tuner?? Am I just wasting my time and money by getting either? Advice please from those with actual experience with the products.... Thanks

2006 Jeep Grand Cherokee, 4.7L V8, QTII, 2" Rough Country Lift, 265/70/17 Nitto Terra Grapplers, Magnaflow muffler w/ resonated tip
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