There probably wouldn't be that big a difference anyway--maybe .2 or .3 seconds if you're lucky. The difference is felt in real world driving. The car has more torque around the 1,500-3000 range and it eliminates the flat spot around 3,500-4,500 rpm. It helps smooth out the power curve. In my opinion, it feels more like the engine the 2.8 should have been out of the box.

What chip r u using?