H3 Engine Performance Up-grades

[H3slate]

Originally Posted by Jim Klee

Regarding the K&N cold air-intake:

The 18.7HP gain is the dyno sheet that came with the K&N kit. This not my dyno, but what K&N is marketing...

Look at what rpm they got that gain. At 6000 rpm. How often are you running your engine at 6000 rpm?

You will definitely hear a difference, which will lead you to drive different, which will make you feel like there is a difference with the new intake.

Don't get me wrong, I like the idea of a high flow intake, but I don't like having an exposed air filter in an engine bay that gets pretty dirty from offroading. Some people have reported issues with their mass flow air sensors from the oil that comes off the filter.

When I had my K&N installed I heard a noticeable difference, but the air resonator was removed to put on the intake. Now that I have gone back to the stock air intake, I don't feel a difference between the two.