Join Date: Mar 2007
Location: Lake Havasu City, Arizona
Own a Commander?: Yes
Model year: 2006
Trim Package: Sport
If 4WD - system: QD-II
Current Mileage: HueyPilotVN
First of all thanks for your service in Afghanistan, be safe and get home next month.
Many of us have changed from the stock air filter and all that plastic housing over to different Cold Air Intakes. I have a K&N system and it got rid of a trash can full of plastic and woke up the sound of the engine. It along with the more open exhaust certainly made the engine at least feel stronger. It could be because of the sound, but it did feel like it was worth it.
I do not know of any of us changing the size of the throttle body. I do not think that you will need a lot more power than the 4.7 in most situations. If you really want to upgrade the power I would think that it is easier to trade up to a Hemi. I personally have never found a situation where I needed more than the 4.7 has.
By the way, I choose the 4.7 over the Hemi because I liked the idea that it could run on an alternate fuel. Given the uncertainly about what might happen in the future and the fact that I like to think of my Commander as a go anywhere expedition vehicle I like options.
Edit: I looked up a 70 mm throttle body for the 4.7 up to 2006. It was about $400 with shipping and tax. I would suggest that you start with a CAI for much less and see what your results are. Here is the link to the TB.
Here is a picture of a cleaned up intake on a 4.7,
2007 Jeep Green Limited 4.7 Flex Fuel, RR 2.5" 4 inch Superlift coils on rear, 1.5" Spacers, Bridgestone 265/70/17, K&N CAI, Flowmaster, Diamond Plate Locking Trunk, Blue Ox Baseplate w/D-rings, "Get Lost 4X4" Front Bumper, T-Max 9000 winch, "Get Lost rear tire carrier, 30 gal second gas tank.
Second 2007 Jeep Green Limited Leather HEMI QDII VES Uconnect Flowmaster OEM Skids Tow Package
Maybe the two will meet up soon edit: they did , I now have 2,now gave 1 away...and got it back again.
Last edited by HueyPilotVN; 06-06-2010 at 02:32 AM.