I have a 2001 Supercrew 4.6L, no towing package. I love the truck, it has less than 100K on it now and I take great care of it. I tow a small RV (5000 lb) and am trying to insure I make it as easy as possible on the truck.. plus getting extra mpg would be great.

I have installed an after market transmission cooler, scanguage, and recently installed a Airaid and Poweraid add-ons.. prior to these I was getting 13 city, 17 highway... now I get 20+ highway and 17 city. I get 10-11 towing, up from 8-9.

So now, my question is recommendations for what is next... any advise on exhaust or chips appreciated. Any advise on some after market cooling systems would be great also. Not after speed, fuel efficiency and less wear on the engine is my main goal.. although extra hp helps with the towing...

 

what airaid/poweraid add ons you running. i'd like to be getting 17 mpg in city with my 4.6 extended cab

 

FI baby

 

The Poweraid throttle body and the airaid cool air intake system. I am on the road now, but when I get back home can give you more info... best $400 I ever spent. I expected some hp increase, but not as much mpg increase as I got...

Now looking at the Evolution CS computer setup... any recommendations appreciated...

 

If you like the CS buy it and have some custom tunes written from PHP to account for the other mods. It will be the best money spent by far.

 

Go to 4.10 gears or 4.56 if your runnin 35" or up tires. towin will be alot easier, more take off, low and mid rpm power the only bad side is your gonna lose a couple mpg(4.10 gears arent that bad tho)