View Single Post
Uncle Uncle is offline
Bad LT
Uncle's Avatar
Join Date: Dec 2008
Location: Newcastle Australia
Posts: 675
Go to guy for modified fuel head / CIS advice.

So I've maxed out the adjustable WUR and have cranked up the fuel pressure as far as I dare (10.2@1,000rpm) but still need more fuel at 5500+ rpm. AFR gauge is telling me 12.5 at 5,500 and 13+ to 6.500rpm.
The right balance for the CSV seems to be 4200rpm with full boost coming on at bang on 3000rpm.
Everything else is just fine but I just can't get enough fuel a higher RPM.

Am I missing something or is the answer a modded fuel head? I'm good with EFI but CIS is still new to me.

Specs are,
87 3.3ltr
Fabspeed headers with Zork tube.
Andial Cooler.
1 bar spring.
K&N Filter on the metering plate.
100RON fuel.

Last edited by Uncle; 11-17-2014 at 03:46 AM..
Old 11-17-2014, 03:41 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)