I just installed my 65mm TB on the 3L.
For some reason, the throttle likes to hang. The speed bleed on the plate was epoxied shut, so I dont think the TB is leaking because when I coax the revs down (going slow) and then stop it will idle a bit high (~900) but will idle fine. It has an SVT tps. does the TPS have to be re-programmed to the values the 65mm is putting out? Sometimes the revs will rise and hang ~2000rpm higher than I let off at.