Had to figure out how to legally drive the car to the dyno and I got it all worked out this week. So I went to the dyno today. Last week it ran perfect, but it started hesitating very bad yesterday so I was worried all was gonna fail. The fuel system was good, and the timing was set correctly at 15 degrees. I didn't knew anymore where to start. So I went with some of the basics, refitted a poorly grounded harness cable and cleaned the AFM and CAS harnesses. Then, all of a sudden it pulled correctly again. Now I haven't driven this car in anger before the manifold swap, but it does feel like the standard mapping is not suited to this manifold. If I quickly depress the throttle after a gear shift, there's no response. It also feels somewhat nervous and sensitive to throttle changes, a bit like my brother's Gti-r with the OEM ITB setup. This system really needs a map 'written' for it. Anyway, on the dyno all went well. The car pulled 263hp/349nm uncorrected at the rear wheels, on a warm day (29 degrees C) and the coldpipes from the intercoolers got very hot as the 2 coolers they had were not that powerful. I estimate the inlet temp was around 45 degrees C. During the other pulls the power went down as the engine heated up even worse and the operator couldn't get a good pulse from the ignition system, the output was therefore measured in speed not rpm's. The blue line is the first pull. The torque values are incorrect, they had some trouble getting the dyno system to correctly convert. Explains the weird 800+nm spike. Realistically, it's about 350nm at the wheels. http://www.youtube.com/watch?v=-MBY_PMVxok Now I'm not directly converting the car back to stock, there's another type of manifold that I want to try on the dyno. Roughly the same as this one, but with the stock TB's. Will make a different topic for that.