DEVILSOWN 6CYL DIRECT PORT METHANOL INJECTION KIT RB 2JZ N55 N54 S55 JB4 SYVECS

ELIMINATE CARBON BUILD UP - Direct injection engines are prone to carbon build up on the backside of the intake valves. The main reason is that fuel and added detergents are not hitting the back of the intake valves as you have with port injection.

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