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If it's a completely free lunch with nothing but gains, why don't Toyota and Honda just put better cams in when they build their cars? I can't believe that some 3-man shop can best Toyota and Honda's huge engineering departments by such a huge margins that Toyta and Honda haven't been able to catch up in 10 years?

I still go back to the free lunch. Everything in the engines is designed to worth together for power, efficiency, and long life. When you make an outside change to that to gain in one area, you can expect a change somewhere else.

Based on that argument, I guess I should change back to the original exhaust system so my engine will last longer. <img src="/forums/images/graemlins/smile.gif" alt="" />
Don't you think they keep OEM cams "tame" for a reason other than for the sake of the engine's overall durability? Like the same reason they use lousy, restrictive exhaust systems, pull hot air into the air box, and all the other power-robbing things they do?
<img src="/forums/images/graemlins/cheers.gif" alt="" />
Phil