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Great thanks I'll check into that plug, the fuel pressure is good at 43 psi and no air leaks with the ether test on crank seals or intake boots. I also pulled the injectors and checked the inlet screens for dirt or anything. They are clean. The previous owner had a power commander in it. And the...

Alright thanks allot guys , Ill tee into the fuel line and measure the pressure, and adjust my secondary clutch by increasing spring tension, and air check the intake. ill keep you posted.

On a recent trip to Blue River, my '06 M7 seemed to be running quite lean and only topping out at 7600 RPM? Pulled the plugs and was quite concerned with the colour as well. The sled has no mods and is bone stock. Tried to adjust the secondary spring tension by rotating the adjuster out. this...