Hummm maybe i should swtich back to a 710N as well.... what does your WOT look like? I can do 21PSI with the green spring, 15PSI with the blue.

 

ive never tried the green spring.. its the weakest spring.. you would think that it woud give the least boost.. hmmm.. i only get like 16psi max with the 710N .. ill probably switch back to the Forge tommorrow and check out the green spring..

 

anyone think this could possibly cause the problem? ya the car is running awesome with the 710N .. but i also cleaned off this plug before i put it back in:

 

any check engine lights?.... maybe a oil ring issue....or possible timing due to a fuel problem???? could be wrong...couldnt hurt to check the injectors.