Results: A new N20 2.0l world dyno record: 300+whp and 350+wtq!!! We did a run before we started on the factory tuning (only with E85 fuel) and hit 237whp. So gains were as high as +70whp (~90 crank hp) in areas under the curve.
A few comments:
1) We're not ready to release all of the tuning details but I will say peak boost was around 23psi (compared to 17psi factory), and in areas under the curve we were making as much as 10psi more than the factory.
2) As expected the platform LOVES E85 fuel. Performance on 91 or 93 octane fuel will be substantially lower but will be stronger than Stage1 power levels. In the coming weeks we'll be posting dynos and additional data on 91 and 93 octane.
3) During testing we opened up the airbox to simulate a high flow intake and determine the potential for intake power gains. In doing so we found exactly zero horsepower gained even at these high boost levels. The factory airbox is simply not a restriction at 300rwp. For this reason we suggest you use only the factory airbox with the N20 platform. Companies claiming gains with intakes on this platform are fooling themselves and/or you.