I had my 2007 690 sm on the dyno last weekend. The bike has a Leo Vince system with the quiet plugs installed, akro map, and stock airbox with the insert still in place. From 3000 to 5000rpm there is a bad lean spot then it goes back to almost a perfect a/f ratio after 5k. Has anybody else seen this with a similar setup? Im happy with the power its got but the lean spot concerns me because its where i do most of my street riding. I wonder if people with akropovic exhaust have the lean spot?