Question about WOT table in $8D bin

NRGZ28 euro at lvcm.com
Thu Nov 16 21:55:17 GMT 2000


Tim.. since we both have the same cams...   would you mind letting me take a
look at your 90-100 KPA values in your VE tables ?

I'd like to get a base where I can start my tuning from :)  Thanx


----- Original Message -----
From: <timsiford at hushmail.com>
To: <gmecm at diy-efi.org>
Sent: Thursday, November 16, 2000 1:28 PM
Subject: Re: Question about WOT table in $8D bin


> Ummmmm ... given the discussion that I just had within the confines of
this
> list I will plead the 5th on this one.  But, at the same time, I will
provide
> what I use in my WOT vs RPM PE table.  NOTE: I am not saying that this is
> the best.  It just seems to work for my car which I have already
established
> as expendable :-)  Use of this is at your own risk .....
>
> RPM %Change
> 0 7.0
> 400 7.0
> 800 7.0
> 1200 7.0
> 1600 6.6
> 2000 3.1
> 2400 0.0
> 2800 0.0
> 3200 2.0
> 3600 1.6
> 4000 -0.4
> 4400 -1.2
> 4800 1.2
> 5000 5.1
> 5200 8.2
> 5600 5.9
> 6400 3.9
>
> This curve isn't really that much different in magnitude as compared to
> the stock curve.  Basically, the entire curve is shift to higher RPMs.
> However, I will point out that my VE table at 100kPa is NOWHERE near
stock.
>
> Tim
>
>
>
> At Thu, 16 Nov 2000 15:39:11 -0500, "JN" <jwn at sgi.net> wrote:
>
> >
> >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
> >> >
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> >> >
> >
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