I have the exact same tune as Rob@needswings. I was planning to run a 25-35shot of N20, so I figured it would be a good start since Robs manifolds increased airflow and showed a 35whp gain. I have yet to install my wideband, nitrous or do any datalogging. Too many other things to worry about right now. Since LET deals specifically with these motors, I thought their tune might be better, so I asked if anyone had it. I guess there really is no way to tell without a back to back dyno comparison on the same car. Rob has shown good results with his tune from Inmotion, so I think I'll just stick with his tune since I already spent the money . I am actually thinking of not running the nitrous and picking up a set of Robs manifolds when released. The car runs good with the Inmotion tune now, but it is probally running a little rich without the extra air from the N20 or intake manifolds. If I can get it to the 11's without having to fill up a bottle I will be happy.