Fuel pressure guage [Archive]

billiardcue

January 7th, 2007, 12:03 PM

What fuel pressure guage set up works best for EFI logging?

Tordne

January 7th, 2007, 12:23 PM

Check THIS THREAD (http://forum.efilive.com/showthread.php?t=2964)... This is what a few of us here have installed recently. I can personally recommend this highly.

GMPX

January 7th, 2007, 02:50 PM

Also see this thread.
http://forum.efilive.com/showthread.php?t=2727

Cheers,
Ross

Bruce Melton

January 8th, 2007, 02:48 AM

I just use a cheapo mechanical gauge with hose propped up on cowl to verify then remove. Not as good, but close and movable.

billiardcue

January 8th, 2007, 04:59 AM

I just use a cheapo mechanical gauge with hose propped up on cowl to verify then remove. Not as good, but close and movable.
I bought one this morning at the parts store, wonder how accurate it is.
It reads 61 psi. I have a Kenne Bell boost-a-pump and the pressure goes to 63 psi at maximum setting.

Tordne

January 8th, 2007, 07:09 AM

What a bunch of has have found is that our fuel pressure is not a static pressure. Mine ranges from ~53PSI at 0 kPa vacuum to ~62PSI at 80+ vacuum.

This is a pretty wide variance!!! As a result of logging the fuel pressure I've changed the slope angle of the IFR table, which in turn has brought the VE table back inline to what I consider more reasonable and realistic values.