Re: [ihc] Holley projection help

[Steven Stegmann <steve.stegmann@xxxxxxxxxxxxx>]

Matt,

Good work on the grounds.  90% of the problems
according to Holley.

Hmmmmmm  most of these injection systems are actually
too large for the 345.  You may have several things
slightly out of adjustment.  If unhooking the O2
sensor causes flooding enough to kill it, then your
fuel pressure is probably too high.  Seems to me the
O2 sensor can command a 30% change in fuel flow,
enough to mess up the engine if it's the wrong way.

Note what pressure you have now and then I'd get the
fuel pressure down to say 11-12 psi and disconnect the
O2 sensor, not sure if there's a jumper to replace if
the O2 is out of the circut or not.  I belive you can
set this with the pump running but the engine off. 
You have to work quickly, the pump will run for a few
seconds when you turn the key on.

Once the fuel pressure is right, I'd start *without*
the O2 sensor and set it back to whatever Holley says
to get it sort of running out of the box.  I'm sure
they have some settings to get it running as a
starting point.

Do they give you any guidance on cold enrichment,
maybe a "choke" setting of some sort.  Once the
baseline setup is working, that would be how I would
compensate for the O2 sensor on a cold engine.

Once you get a baseline setup that runs, when you hook
in the O2 sensor, you'll probably have to richen up on
all the controls.

My Projection is a 4Di and I do all this with a
computer.  So the manner of setup is going to be
different.

John Hoffstetter has had a 2di for years with good
results, I'm sure he can offer some advice.

Steve

--- Seay Maj Matthew R <SeayMR@domain.elided> wrote:

> Steve/Ryan,
> 
> 	2D System, knobs on the box.  By the way, if anyone
> wants a spare
> analog system ECU, let me know and I will mail it to
> you...Hofs?
> 
> 	I have tried to use the idle mixture screw to get
> more fuel at idle,
> but it didnt help.
> 
> 	I do have the O2 sensor hooked up, it is good to
> know that it kicks
> in at coolant temp of 75 deg.  I've unhooked it when
> then engine was warmed
> up and it immedately flooded out.  I am a ground
> maniac, I've got a central
> grounding block hooked at the engine, so I dont
> think it is a grounding
> issue.  I did have one ground come loose and I lost
> power/engine died very
> quickly.  Took care of that issue and double checked
> all of the other
> grounds at the same time.
> 
> 	I need to check the pressure.  I increased it at
> the throttle body
> from the factory set, but I dont know by how much.
> 
> 	Reading the tuning instructions, the first thing
> Holley tells you to
> do is set mechanical idle at 600 rpm.  I cant get
> that to happen because I
> am at the high mechanical limit. Any ideas?
> 
> 
> Matt