I'd check operation of the kickdown switch. Not certain from your description if it kicks down at lower speds because of throtle pos or if you are hitting the kick down switch? Then vacuum lines for leaks.

Did you also clean out the resonance flaps on the other end of the crossover pipe?

I believe there is ~40hp diff between the NA and turbo's AND turbo's love to pull on hills; I wouldn't expect the .910 to keep up with the .962 in that environment, expecially as your .962 is chipped.

How does th biodegradable harness look?

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)