If not, does anyone know the formula for calculatign it?

Jason

 

Here's a link to Traxion's post with the equations needed to calc AFR. I created formulas in Excel to do the calcs. Works like a champ. Thanks Tim!

https://www.thirdgen.org/messgboard/...ML/000273.html

 

Thats for the $8D code. Is it the same for $6E code?

 

I sure hope so since I'm using it for my $6E application. I've done the calcs on 10-12 $32 and $6E stock and aftermarket bins and the data looks like I would expect. That's not a guarantee but I feel comfortable.

 

Yea it looks works on my end too. Question on the commanded AFR. What does
the $6E code use as a basis for adding or subtracting fuel? One bin I have
shows a commanded AFR of 11.5:1 while another shows 15.08:1 at 5600 RPM! The stock AYPY bin shows a 12.82:1 AFR at 5600 RPM. Do you ignore the
commanded AFR and just give or take to get the desired O2 volts at WOT? It
just seems to me that the airflow at a given RPM could be calculated and the
fuel adjusted for a close starting point.

Jason


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89 Six Speed FX3 coupe
More Performance 396cid specs:
Callies 4340 crank 3.875 stroke
Lunati Pro-Mod 5.85" rods
SRP Pistons 14cc dish
Comp Cams Custom cam 550 lift 220/229 duration
10.8:1 compression
AFR 195 competition ported heads
Miniram and TPIS 1 3/4" headers

[This message has been edited by 89vette (edited May 14, 2001).]