My engine is a newly rebuild with a Judge Ito large streetport.

I just fired it up and she's up and running, though, there is a bunch of misfire and idle is nowhere near good.

All of my solenoids are currently gone, so the vacuum of the FPR (original one) is routed to the manifold.

I'm debating to reinstall the Fuel pressure solenoid, hoping that it will smoothen out the idle issue for some part.

The engine is now running on the base PFC map so I need some adjusting.


The engine is nowehre near smooth running, only when revving it up to 2k rpms it gets a little better but misfire is still there. I ordered a HKS twin to improve this.


Anyone who can give me some usefull tips to adjust the idle is very welcome.

Thks