Injector Confusion

[the Fredericks]

Bruce,
I have some experience with these with FMUs on supercharged/turbocharged
applications, and I hate 'em.  IME, they are unreliable, not very linear,
and not very repeatable.  They depend on restricting the return line for
their pressure rise, and what happens at WOT?  You're using most of your
fuel and not returning much, and the pressure drops...Boom.  We just pitched
the one on my friend's Powerdyne supercharged BMW 2002 , and the fuel curve
is much more consistent without it.  We did have to go up considerably on
injector size; TNSTAAFL, you know.

Kendall Frederick

> -----Original Message-----
> From: owner-gmecm at esl.eng.ohio-state.edu
> [mailto:owner-gmecm at esl.eng.ohio-state.edu]On Behalf Of CSH-HQ
> Sent: Thursday, November 11, 1999 11:57 PM
> To: gmecm at efi332.eng.ohio-state.edu
> Subject: Re: Injector Confusion
>
>
> Eeer Fred,
> these as I've seen have to be vac refernced so that as the vac
> changes the
> pressure changes, nothing to do with rpm, "basically".  Other
> then the levl
> f vac you can draw at WOT
> Grumpy
>