Found these on E-bay. Anybody tried them?
Xterra performance chips on E-bay

Jeff!

They don't work.

In terms of the 1st Gen Xterra, there isn't much to be gained by swapping out chips. The low compression ratio, small displacement and mild camshafts in the 3.3L's are not a good foundation for performance gains from a chip flash or programmer.

Chips and programmers see the greatest benefits in large V6's, V8's and big diesel engines. Essentially, those aftermarket chips allow for performance gains via timing advances, however, you'll have to run high octane fuel to realize it.

If I understand correctly, there is a chip available for the 2nd Gen Xterra and Fronty but the timing advance is only 2 degrees. Personally, it's not worth it unless you can get a 4 degree timing advance and run 93 octane. Then again, the 2nd Gen X 4.0L V6 makes 260HP/280TQ on 87 octane. That's on par or exceeds the performance of a stock 302 V8.

8th man, you do realize the item in question is one of those stupid resistors that fools the air intake temp sensor, and not a legitimate chip of any sort, right?

The chips really work best when coupled with a Tornado!!

Didnt we just have this conversation a couple of months ago???

Nope. I didn't know that. I tried to click on the link but the url is dead.

Thanks for clearing that up for me.

Sorry 'bout the link. Still learning how to post stuff here.
I'm on USN alot, and it's different there.

ThanX

Jeff!

Bully dog has a generic one that does shifting and tire size adjustments as well as power mods for regular gas. Bout time too, it only took someone 4 yrs to make us one that works.