[SquallLHeart]

uhmm... can i chime in?

yeah the '07s have a different setup completely and yes, the new exhaust manifold and header plays apart in the reason why.

also, from what i was told by one of TRD guys i know that has the prototype s/c for the '07 in his car.... the new ECU in the '07s can utilize Toyota's current scantool equipment so dealerships don't have to buy any extra crap to perform the reflash.