I bought an early 04 AT that had the recall on the ECM. I had the ECM changed last fall. The clutch was fine at the time. It ran pretty good. Later on I bought a uni filter and it made a big difference. I was surprised. It drastically improved the throttle response. It was nice. Later the bike started to loose a little power. I took it to the dealer and they said the clutch was shot because of the first ECM. The replaced the clutch(under warranty) and the tie rods in the front under the recall. Now when I drive the AT it has lost that snappy throttle response. It will take a second to rev up and take off. Is this normal? Anybody else have this problem? Is the clutch adjustable

 

Anybody?

 

From a dead stop mine takes a second to rev up to the powerband. I assumed it was the nature of the auto transmission. Let me know what you find out.

 

FYI,EPI makes a clutch kit for the 400AT.It makes the clutch engage about 500rpm higher than stock.Godd for mudding or big tires.