I gave the AMOSPRO MAP a shot because I had heard some mixed reviews on using it with the stock air box. It does, in fact, run too rich on my bike. So, I can vouch for that. I went back to the PCIII stock MAP for the V&H Propipe with AIS and Open Baffle. Sure wish someone had a better setup. I read that some guys will be doing dyno work at Sturgis this year. I think I'm going to bring a little extra money and let them have a shot at mine.