Originally Posted by MrSir

It really depends on your setup. My car has BERK HFCs so i still have the O2 sensors in there. so no need for tail pipe sniffers. He just plugged his laptop into the port under the steering wheel and did his magic. The Dyno he uses from what he explained to me is able to create variable resistance to make things more accurate and easy to evaluate.

As for the drive home i actually drove out 100km to Jason's house in Couburg. The car ran flawlessly. It has proper throttle response now, before it was just meh. But then again 20hp certainly makes a difference. I think fuel consumption actually improved too, but ill have to verify that as time goes by.