Help/advice on performance mods! - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 17 (permalink) Old 06-26-2009, 11:04 AM Thread Starter
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Smile Help/advice on performance mods!

So Ive read different topics on performance mods and I have a few questions and/or adivce. I have a 06 limited 5.7, i installed a 63 Series k&n about a month ago and Im looking to do a few more performance mods.

For exhaust would it be better to get full system or just muffler? I was leaning towards flowmaster either way. Is the superchips computer modifier the only/best one for the commander? Do throttle body spacers make much of a difference and if so which one would be best? What other mods would make a difference as well? Thanks in advance for and for any help!
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post #2 of 17 (permalink) Old 06-26-2009, 11:10 AM
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I also have the 2006 with the 5.7

I went with the AEM Bruite Force CAI, Gibson 3" exhaust and Superchips programmer. I am not sure you can do much better then that combination.

I would not mess with the throttle body spacer on the hemi if you have the CAI, I cannot believe the difference would be measurable.

There is a Jet Chip Stage II for sale by a member and that might be a good option if you do not want to spend the money for the programmer.



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post #3 of 17 (permalink) Old 06-27-2009, 01:15 PM Thread Starter
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well i already have the k&n intake kit on it, is the AEM better? You have a full Gibson exhaust and is that the best brand performance wise? Thanks for the reply btw
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post #4 of 17 (permalink) Old 06-27-2009, 01:49 PM
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I liked the Brute Force because it had the chromes steel pipe which added appearance to the engine compartment, the tube is larg which allows more air and I was told that the metal pipe was better then the rubber one.

I have the full Gibson exhaust which means larger pipe all the way back which was another selling factor, Remember to get good horsepower you need to both get lots of air in but also get it back out as well.

Honestly I don't think any brand is that much better then any other, it really depends on what you. I like the looks of my products and the sound of the air intake & exhaust is pretty cool too.



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post #5 of 17 (permalink) Old 06-27-2009, 07:12 PM Thread Starter
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ok gotcha. so as far as sound goes, does the gibson sound like its been defiantly upgraded, but not like a mustang gt? or can i not escape that sound due to it being a 5.7L? and what about headers, worth getting any? sorry to keep asking questions, i havent had the commander for long
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post #6 of 17 (permalink) Old 06-28-2009, 01:31 PM
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As far as I know there are no headers available for the Commander. But I can tell you that the HP improvement from the CAI and the Gibson is noticeable.

Here is a thread on Track Times from when I raced a couple other Commanders at the track.



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post #7 of 17 (permalink) Old 06-28-2009, 03:58 PM Thread Starter
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thanks so much for your help, i will be ordering my exhaust this week, also i was looking at the superchips programmer and think i might go with that as well. thanks again for your help
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post #8 of 17 (permalink) Old 06-28-2009, 05:35 PM
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Let me know how the superchips programmer works for you. I was interested in that as well.
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post #9 of 17 (permalink) Old 06-28-2009, 10:21 PM
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Quote:
Originally Posted by a49erFan View Post
As far as I know there are no headers available for the Commander. But I can tell you that the HP improvement from the CAI and the Gibson is noticeable.
I almost positive you can get headers for the 5.7 Liter HEMI. There are so many other vehicle's that use that engine. You would mostlikely just need custom exhaust from the header back. Also I dont thing spacer would be an issue. If the can fit a 5.7 liter HEMI in a JK then im sure there is enough room in the engine compartment to fit them.

EDIT: Now that I think about it I remember one of our forum members having "headers" in their signature. Ill try to find out who it was. Maybe they can point you in the right direction.




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete

Last edited by 07JeepXK; 06-28-2009 at 10:31 PM.
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post #10 of 17 (permalink) Old 06-28-2009, 10:32 PM
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Try contacting this forum member. He states he has a banks header.

nashmaximusoriya




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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