In my case with my TWM's, I experienced a smoother idle and my exhaust is much quieter. That's because the EFI system is much more efficient. It is much more driveable, but it seems to pull much harder in 3rd gear. Hard enough to change the 3:54 rear end gear to a 3:31. It has gobs of low end torque. In my opinion, my car is much quicker with the EFI. Plus, it looks better, too!
