Quote Originally Posted by Ebenezr View Post
I've wondered about that myself. lean vs rich with different air densities.
Worry not my friend, the mighty ECU that does all the thinkin' for the VX's plant can compensate for up to 5 psi of boost (thus far)

It'll more than deal with air temp & density.

The only problem I ever encounter is at altitude, sometimes it'll throw a few "lean during acceleration" cel's.
I also get a few cel's when the MAF gets crudded up with K&N filter oil now & then.
A quick blast of this stuff generally clears that right up...

Being able to read & clear cel's - on the fly (this is the one I use) is an option I'll never be without for as long as I'm able to drive...

Should be at least a few more years...I hope.

Also, anything that increases power usually will kill mileage, that's why hypermilers generally try to heat their intake air to increase mileage.