Thread: Identical l67 engines, very different power levels. Why?

Originally Posted by machinegunsquid

Sparkplugs, the obvious answer!

Pull 1 or 2 plugs on each motor, and see how they look. Old worn out plugs, or misgapped will make a huge difference in power, especially if they are experiencing blowout.

Just a thought.

2nd would be fuel/cat conditions.

If you could, get an Aeroforce scan gauge, and go ahead and hook the powerwire to an add-a-fuse, so you can hook it up/take it off in a matter of seconds, so you can
A: pull any SES codes
B: Check knock
C: know much more about the condition of the engine


Plus, if you're going after an L67, you'll want an Aeroforce anyways =]

This is a great idea, especially for a "new-to-you" car that you don't know the history on. We wouldn't want to chip a piston now would we