Question about WOT table in $8D bin

[JN]

Wow, in looking at my bin that was modified by a reputable tuner originally,
he has what I calc as a 14.12 AFR at 5200 and a 14.85 at 5600!  I guess with
the miniram I should fatten these up some.  Tim, what do you have for PE vs
RPM.  Our motors are similar cams, intake and we both run 30 pound injectors
with a 33 pound injector constant.

Jason
----- Original Message -----
From: <timsiford at hushmail.com>
To: <gmecm at diy-efi.org>
Sent: Wednesday, November 15, 2000 4:04 PM
Subject: Re: Question about WOT table in $8D bin


> Bruce,
>
> I don't think its as bad as what you are saying.  Please - hear me out.
>  I said that the calculation shows that I am running 10.16 AFR.  This was
> at 5600rpms and a coolant temp of 80deg C.  HOWEVER, the stock AUJP bin
> has a PE modifier of 7.8 at 4000rpms in WOT %Change in AFR vs RPM and a
> modifier of 22.7 in WOT %Change in AFR vs Coolant.  This results in a
10.22
> AFR.
>
> Now, I am NOT running 10.16 everywhere.  I just picked the highest point
> of the curve and reported that point.  I also picked the highest point of
> the AUJP curve and reported that.  Again, the formula I am using is the
> one previously supplied here on the list ....
>
> ( 1  -  (( RPM Mod  +  Coolant Mod )  /  100 )  *  14.7
>
> I am not concerned about the fueling.  I am close to 128 at all points
when
> driving.  I spent significant time on the VE curves.  The WOT %Change to
> AFR tables are modified from stock ... but, no so much in the levels but
> more as to the shape.  The MiniRam doesn't need as much fuel at 4000RPMs
> as compared to the TPI.  However, it does need more at 5600rpms.
>
> Tim
>
> At Wed, 15 Nov 2000 12:28:20 -0500, "Bruce Plecan" <nacelp at bright.net>
wrote:
>
> >
> >
> >IMO,
> >Your running a diesel now.
> >You have enough fuel that your CR is even up.
> >At tear down the ring lands will be knocked out and you'll need pistons.
> >Just about beat you have a 160d and within one heat range of stock plugs.
> >The tip of the plug is acting like a glow plug for lighting the change.
> >It kinda a typical thing when your at more fuel more timing agenda stuff,
> >just some guys go that route wastes gas, and tough on parts IMO.
> >No telling what the heads will be like, if (oem) iron probably cracked
> >between the seats.
> >Also, will have more carbon to deal with and more likely to burn an
> >exhuast
> >valve.
> >It's like doing a nitro tune but with gas, eats parts
> >Bruce
> >
> >
> >> >Just remember you said that <g>
> >>
> >> I'll remember Bruce <g>.  But, I'm not a fluke.  I've talked to several
> >> other AFR190/MiniRam ownders that are running the same type of spark
> >advance
> >> (max).  Now sure about the Air/Fuel ratio they are running though.
> > Will
> >> be pulling plugs soon to take a gander.
> >>
> >> Curious though .... I have a feeling that you think I'm gonna blow
> >myself
> >> up :-)  Can I pick your mind and ask why?  I know that I will
eventually
> >> lose the bottom end ... but, I don't think that it will be PROM
related.
> >>
> >> Tim
> >
> >--------------------------------------------------------------------
> >--------
> >To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> >in the body of a message (not the subject) to majordomo at lists.diy-efi.org
> >

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org