[Gmecm] RE Tweaking Asynchronous BTW

[Beau Blankenship]

>>Back to my ORIGINAL QUESTION , what is "ASYNCHRONOUS BTW" and how does it
affect the VE tables. Is it nessessary or should it just be disabled.?
If your reading this Steve, do you have any comments?>>


A quick Google search for "Asynchronous Fuel" turned up lots of results. A
few are information about the patent for "asynchronous control of fuel
injection". The patent itself is very interesting and informative, and
should answer your question very well. There is another link to Custom EFI's
info page. As far as the BTW part, I have never seen that acronym in GM ECM
talk. You may be referring to the "base pulse width" which is commonly
referred to as the BPW. Adjusting the VE tables is not a very good way to
make up for oversized injectors, IMO. There is a constant in TunerPro called
"BPW constant for EGR off" or something similar depending on which def file
you use. Stock setting is usually 135. I had to set mine to 95 to account
for the 85lb holley injectors. I probably should have adjusted those asynch
tables also, but I DID adjust my accel enrich tables for that purpose. Sorry
I'm not Steve. Just thought I'd share my experiences. Hope it helps.

Beau