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Old 06-24-2013, 10:48 AM   #1
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Exhaust, headers & catback

I've got an 09 wrangler and wanting to upgrade my exhaust system. Any advice on what to put in? I want the full upgrade with headers and catback, looking for a more open sound but don't want it to sound like a race car, thoughts?

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Old 06-24-2013, 11:23 AM   #2
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I've got Gibson headers and Banks cat back system on mine (2009 also). It sounds just a little deeper inside the Jeep but from what people have said it sounds pretty good from outside also.

Only problem that I've had was the nuts on the header studs to catalytic constantly backed off on the right side. Not sure what caused it but after trying multiple avenues (thread lock and various lock nuts) I ended up double stacking lock nuts to keep it tight.

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Old 06-24-2013, 11:35 AM   #3
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hey you noticed any performance gain?
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Old 06-24-2013, 10:23 PM   #4
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I can't really say what gains where made. I installed a supercharger at the same time as the exhaust. The main reason I went with the exhaust was to open up the air flow for the SC.

I would be willing to bet that the performance gains are minimal though. You might realize 2 to 5 HP, maybe as high as 10.

Are you going strictly for sound or are you looking for better performance out of the 3.8?
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Old 06-29-2013, 01:06 PM   #5
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going for more power, the sound is just a nice bonus
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Old 06-29-2013, 01:44 PM   #6
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going for more power, the sound is just a nice bonus
If you want to feel more power then get a higher gear...
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Old 06-29-2013, 09:10 PM   #7
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I had a 2007 Sahara Unlimited with the Gibson Headers, Gibson Dual Exhaust, AirRaid CAI and Jet performance chip. On the dyno it showed gains of 20HP and 38TQ. However the automatic transmission tends to nullify the gains because the max power is in the 3500 to 4500 rpm range and, except under hard acceleration, you will not be able to drive in that range with the auto. I was also never happy with the sound as it was way too loud and sounded like a boat. Other issues were the constant separation of the header from the catalytic converter as another poster mentioned and the need to replace the spark plug wires with heavy duty high heat performance wires and additional shielding because of the proximity to the hot headers. Just traded it in for a 10A JKUR.
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Old 06-29-2013, 09:28 PM   #8
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A blower, as mentioned earlier, would be a better route to go. Gearing would be a close second. These V6 engines just don't have much to be wrung out of them in a practical manner. I think I've read rumor of aftermarket camshafts on the Charger/Challenger forums for a while now, but nothing ever comes of it. We there money to be made on it, it would have been done by now. There isn't the gearing, on most Jeeps anyhow, to do much with the power it already has if you are looking for speed-type performance. Gearing is a no brainer if you can't throw the time, money, care and feeding into a blower.
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Old 06-30-2013, 10:35 PM   #9
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If you want to feel more power then get a higher gear...

sorry but what do you mean by a higher gear? I don't have much experience when it comes to engines/jeeps
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Old 06-30-2013, 11:08 PM   #10
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If you have an auto then best wishes, if you have a manual then you will actually feel a difference with a chip, intake and exhaust. Changing gears to match your tire size and adding a supercharger will help even more.
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Old 07-01-2013, 12:05 PM   #11
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Originally Posted by CapsFan09 View Post
I've got an 09 wrangler and wanting to upgrade my exhaust system. Any advice on what to put in? I want the full upgrade with headers and catback, looking for a more open sound but don't want it to sound like a race car, thoughts?


One thing to consider when you do a cat-back is to get one that relocates the muffler under the JK and clears up the back of the JK. Good luck in your search!

Dynomax® Performance Exhaust | Exhaust Systems | 2011-2007 JEEP Wrangler (2 Door) w/3.8L - high clearance off-road "Rockcrawler" design: Single - 2.5" system. 3" tip. Ultra Flo Polished Muffler
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Old 07-01-2013, 02:30 PM   #12
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What I learned when I was looking into improving power/MPG is, like most poeple have said, there isn't much that helps significantly. Programmers seem to be the best bang fo the buck (esp if you have an auto since it can adjust shift points and firmness) and the rest help minimally. If you do want to go with a header, don't go with a shorty. Long tube like what Ripp offers seem to be the only thing that is actually worth the effort of replacement but they aren't cheap Jeep Wrangler JK Stainless Steel Long Tube Headers with High Flow Cats Borla makes one as well but again not cheap Borla Part bor17251 - XR-1 Stainless Long Tube Headers


I ended up deciding all of that work for headers and such wasn't worth it and went with a supercharger and a cat-back. Some day I'll do the headers as well
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Old 07-01-2013, 03:55 PM   #13
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sorry but what do you mean by a higher gear? I don't have much experience when it comes to engines/jeeps
Pretty much nothing will give you more power short of a supercharger/engine swap.

Higher gear as in regear the axles. What size tires are you running?
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Old 07-05-2013, 01:36 PM   #14
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Im currently running 265/70R16 tires - ive got a good deal on some new '13 Rubicon wheels (255/75R17), if that goes through i'll use those.
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Old 07-05-2013, 01:55 PM   #15
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looking at the MBRP exhaust MBRP Inc. S5518BLK - MBRP Black Series "Off Road" Cat Back Exhaust System for 07-11 Jeep® Wrangler JK 2 Door with 3.8L V6 Engine - Quadratec and AFE exhaust aFe Power 49-46208 - aFe Power Mach Force XP Hi-Tuck 2.5" CAT Back Exhaust for 07-11 Jeep® Wrangler JK 2 Door with 3.8L - Quadratec parts. Other than the cost is there any difference? One site I looked at said the MBRP will need to relocate the evap canister, I cant tell if the AFE one requires that to be moved as well. Any advice? thanks in advance
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Old 07-08-2013, 12:41 PM   #16
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The MBRP one linked there puts your muffler in the middle of your Jeep and the area where the muffler is currently is left empty. The aFe exhaust linked keeps the muffler in the stock location. This difference is why MBRP says you need to relocate your evap canister since the MBRP one puts the muffler right near the evap.

MBRP has another series of exhausts that keep the muffler in the stock location. That is what I used. Here is one of them: MBRP Inc. S5516BLK - MBRP Black Series Cat Back Exhaust System for 07-11 Jeep® Wrangler JK 2 Door with 3.8L V6 Engine - Quadratec

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