2009-07-01
I need more speed before the next one mile run. The exhaust system will get this exhaust cutout for better breathing and turbo spooling. I bought it from Summit Racing and had to shorten it because the exhaust pipe didn't have a long enough straight part. It will be closed in road traffic and open on track days.

The cutout will be placed after the lambda sensor and before the cat.

2009-07-21
I added a helper spring to the wastegate in order to keep the wastegate shut a little longer and to make a little more boost. I found a good set of tension and compression springs at the local Biltema. The testing with the spring and fuel mixture seemed to work because I ran my best quartermile ET 15.152 at 148.03 km/h (92.0 mph). With a total weight of 2930 lbs this means approx. 178 rwhp.