I think gold is stock? I switched mine to light blue, which is between gold & dk blue, closer to dark blue. and it increased my engagement rpm by about 500rpm. it was wicked of the line but it reved out too high (Past peak HP rpm) in high gear. I went back to Stock. I think the dk blue will definately get you off the line better but not sure how your gear shiftout will be. Does anyone know how to compansate for this in the secondary clutch?