Gas In The Oil

I get a bit of a fuel smell to my oil from time to time depending on how hard ive been beating it between the oil change. No fuel in the oil though .
 
Idle is usually around 12-14

Cruise 20ish
But I have the E303 problem child
Therein lies your solution as to "why doesn't it make more power" with it on.

Ask Santa for a cam ground in this century. One that has a lobe separation that is more boost friendly.

That cam has a 110 degree lobe angle. Typical power adder cams go somewhere in the 112-114 maybe even higher.
Consult the great @84Ttop. He should be able to add some insight on what cam profile would be happier having air forced past the valves.
 
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