A lot of very qualified people have spent time trying to diagnose the issue(s). Without actual data, we're driving with one hand on the wheel and one eye closed. Each engine has a finger print. No two are alike and each require, for optimal performance and efficiency, an exact combination of fuel, air and spark. Making a change in your cams has a dramatic impact upon the volumetric efficiency of your particular engine. If you want to know how your setup is performing, I strongly suggest you get proper hardware and software to log engine data. Once you have this, you can post up a .CSV file so that Marc and others can properly diagnose what is really going on.
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