Question about WOT table in $8D bin

[timsiford at hushmail.com]

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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