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post #1 of 15 Old 05-06-2008, 02:59 PM Thread Starter
-Shoey-
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Lil more ooomph

I'm sure this has already been discussed more than a few times, but with my stick rims and 265/75/R17 A/T's, I've noticed my WJ is a bit more sluggish and would like to get some extra power. I'm thinking about a K&N FIPK kit and a custom cat-back exhaust. Any thoughts?

Also, on the exhaust side, I've considered going full custom (headers, true duals) but after mentioning this to someone at a Dodge/Jeep dealership he said that would screw my sensors up causing the engine to not run right. Any thoughts on this?

Thanks in advance


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post #2 of 15 Old 05-06-2008, 03:09 PM
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obviously you havent searchd.

there are no headers available for the 4.7 WJ due to lack of space.

doing a highflow muffler and CAT would help, allong with the addition of a K&N FIPK, mabe a larger TB?

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It's threads like this that make me wonder why people lift there jeeps
its comments like this that make me wonder why some people are jerks.

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post #3 of 15 Old 05-06-2008, 03:12 PM
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I k&n intake and an exhaust will give you very little gains you might notice a little more power but not much. and I dont know about the headers. If you re gear to 4.10 or 4.56 gears then you will get some power back but you will ride at a higher rpm on the highway.

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post #4 of 15 Old 05-06-2008, 03:21 PM Thread Starter
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No, I didn't do a search on headers for the 4.7. Muffler-wise I planned on a Flowmaster Super 40 or a Magnaflow. I'm also a little hestitant to get a TB spacer because I've heard mixed results on those. Same goes with programmers.

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post #5 of 15 Old 05-06-2008, 03:22 PM
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sorry, i was not specific, dont get a TB spacer, but a larger TB, with larger diameter ports for more air flow.

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Originally Posted by shift_grind View Post
It's threads like this that make me wonder why people lift there jeeps
its comments like this that make me wonder why some people are jerks.

build thread:
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post #6 of 15 Old 05-06-2008, 04:19 PM
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As already posted, re-gearing is your best bet. If you don't have factory towing package, you're probably at 3.55s, if you do 3.73s; go with 4.11 for 32s or 4.56 for 33s. Use the money for FIPK and TB spacer in gas, or even better, send me the money for my LAs fund

David.


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post #7 of 15 Old 05-06-2008, 04:21 PM
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Quote:
Originally Posted by TX-WJ View Post
As already posted, re-gearing is your best bet. If you don't have factory towing package, you're probably at 3.55s, if you do 3.73s; go with 4.11 for 32s or 4.56 for 33s. Use the money for FIPK and TB spacer in gas, or even better, send me the money for my LAs fund
x2. regear.

The 4.7 automatically has 3.73 gears.


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post #8 of 15 Old 05-06-2008, 04:23 PM
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Quote:
Originally Posted by Shoey40 View Post
I'm thinking about a K&N FIPK kit and a custom cat-back exhaust. Any thoughts?
The drawback with any high-flow air filter is that you're only going to see real power gains at high RPMs and not in daily driving. During high RPMs is when you have higher air intake which is helped by a high-flow filter. For normal driving you're not going to see much benefit.

But you could make the argument that something is better than nothing though.
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post #9 of 15 Old 05-06-2008, 09:34 PM Thread Starter
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Ah, I was hoping that regearing wasn't my best option. Haha I work out of town during the week, and I'm not exactly the best guy with a wrench haha. So me doing the regear myself would probably take forever, and I couldn't take it to any shops cuz in good ol WV we're lacking in the offroad shop area. But hey, I may as well try it.


And have someone who knows what theyre doing on speed dial....

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post #10 of 15 Old 05-06-2008, 10:37 PM
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post #11 of 15 Old 05-06-2008, 10:42 PM
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I wouldn't suggest regearing yourself. Pay someone to do it. You'll end up paying to have it shimmed by a pro anyway.
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post #12 of 15 Old 05-07-2008, 04:29 AM
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and from what i hear about programers is that it only works for a little bit then the oem computer readjusts and your back to factory setting

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post #13 of 15 Old 05-07-2008, 12:01 PM
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http://billhughes.com/mirror/50FreeHP.htm


50 Free HP !!!

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post #14 of 15 Old 05-07-2008, 12:08 PM
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That's great!!! This exhaust mod combined with the hydrogen conversion detailed in another thread will really create an unstoppable beast on the trail. People are so smart!!
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post #15 of 15 Old 05-08-2008, 02:09 PM Thread Starter
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Originally Posted by virmagicus View Post



That's fricken great. What makes that even better is that a friend of mine had an ol Justy that he welded a coffer can onto. Wasn't a great rally car though...

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