TDI CP4 Metering Valve Bypass Kit Application?:CRUA - CVCA Golf/Jetta only with Olsen Fabrication filter bracket The reasoning is simple: the

The reasoning is simple: the E80/90 series cars utilize restrictive charge pipes that shrink down to less than 2" ID

These are made from brand new genuine Bosch injectors

and pcv quick connect barb & fittings

Includes oil fill cap

works great with a stock turbo

TDI CP4 Metering Valve Bypass Kit Application?:CRUA - CVCA Golf/Jetta only with Olsen Fabrication filter bracket The reasoning is simple: theAs with any of our machined products, the block is 100% CNC cut in house here in Johannesburg Michigan. For those that dont know, the CP4 is the fuel injection pump that is installed on the second generation 3. 0 TDIs and 2. 0L TDIs. This injection pump uses only its fuel supply for lubrication, diesel first flows into the bottom end of the pump to lubricate the camshaft, rollers, lifters, and bushings before the diesel flows up to the metering valve