The ASP 52 is a nice engine, runs happily on 5% even but a 14x6? Wow ... most 46 would be struggling with a 12x6 even without a tuned pipe that is ... that means your ASP 52 with a tuned pipe is as powerful as a Saito 82. However, 10,000 RPM for that engine would be way out of the power curve. Sluggish perhaps? Maybe the pipe makes a lot of difference ... The spool up sounds a little sluggish ... anyways, its great data ...