Jesse_Boyer
Veteran Member
some more on the side topic of the 4.2 adaption.
development courtesy of 2micron
CP4.2 mounted on factory bracket with the spacer:
adding a port to the fuel rail
Is 2micron re-clocking the CP4.2? (doesn't look like it and based on the holes, the spacer serves only as a spacer.) Is it clocked like thiswouldn't it be better to just use the shaft and front plate from the stock 4.1 HPFP so no adapter plate would be needed?
Instead of modifying the rail and adding a port for the second head, could it be possible to route the outputs of both CP4.2 heads to an off-the-shelf wye-block and run one line to the factory rail? Less machining and since a new line/connection is needed for the second head anyway, it might be lest costly.