I'm definitely shifting at a lower RPM, not sure how I am on a MAF as Justin tuned it. My IATs are through the roof about 60-80 over ambient after WOT...also on a stock HX, but will be running dual soon. I'm doing some testing to show improvements on IATs. I have all this in an Excel spreadsheet and will post a thread on it when I am finished that way us Radix guys can see what actually works and what doesnt.