Here's the dyno graph.....
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is 340whp on sotck sleeves pushing it or something?I've never met the guy, but servion's rep precedes him. 340hp 305 tq On stock sleeves...
http://www.honda-tech.com/zerothread?id=1468119
I'd say he know's what he's doing. As for the 13:1 AFR, I don't know how he was measuring, but he's a tuner that reads the plugs to see how the engine's doing... Also, once you've hit MBTT, you can pull fuel and add timing safely