I absolutely love it! Pulls a lot harder in low rpms, high rpms i'm sure are improved also but it is really noticable in low rpms. Drivability is not really a problem at all, didn't even stall first time i got in, i'm also running TRD
USA clutch. Blips on the throttle actually make the rpms jump now, and thats with the stock airbox. Ok here are some pics before i had it installed.