i hear all u guys talking about the 66-44 helix as the one to run just wondering if it is the 66-42ER.46/66-44ER.46 in the slp catalog part#50-102 thank u in advance
how do u install it to switch between the two also should i run the red/black or red/pink spring? on a 06 159 19/42 gearing slp pipe timbersled intake vforce reeds avid drivers thinking about porting my track 2200-6000 ft
thanks