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Description

N47/N57 CP4 Metering Valve Bypass KitAs 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 USA BMW diesels with the N47 and N57 engines. 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

and a fluoro-lined cold-side adapter to connect to the exisitng charge pipe

All E90 BMW applications with a welded ring gear are now able to be installed in house in 2-4 weeks depending on how quickly we have a break in CNC time to drill and thread mill the ring gear

ATM also includes easy-to-install CNC machined fittings for both the hot and cold side

This increased air supply along with a high-flow 8-layer filter yields a considerable top-end power increase

Bushing #11A in diagram

Install the studs into the block with a 5mm allen and stop turning as soon as the stud bottoms out

Fitment was developed on an accident free 2009 335D

Our personal test car has logged over 25k miles with the OEM EKP and the Walbro 535 without throwing a fault

If this issue is found

For those that don’t know

Dual spring set for all 8v PD TDI's

The 100% plug and play in tank lift pump kit is all brand new parts custom assembled by Precision Raceworks using a Walbro 535 fuel pump

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