Can anybody find any advantages to running AE in async?
Are there any problems with the following code theory;
Sync pulse width always with AE as a sync pulse width adder. If the pulse width approachs 80-100% carry over the remander for the next sync pulse until all AE is delivered. Wouldn't that have been better than dropping sync pulse widths when sync and async are both called?
Is it more code? Processor power? What? Or did GM just want to have something work off of the built in timers?
I'm stumped. Sure it "works" on stock but then again stock engines were so underpowered you could tell if you were running on all 8 cylinders on it's BEST day!

 

No.

Quote:

Are there any problems with the following code theory;
Sync pulse width always with AE as a sync pulse width adder. If the pulse width approachs 80-100% carry over the remander for the next sync pulse until all AE is delivered. Wouldn't that have been better than dropping sync pulse widths when sync and async are both called?
Is it more code? Processor power? What? Or did GM just want to have something work off of the built in timers?
I'm stumped. Sure it "works" on stock but then again stock engines were so underpowered you could tell if you were running on all 8 cylinders on it's BEST day!

Works better (sync AE), no more processor power required, very little more code required, works very much better (personal experience here). Holding over excess AE PW until the next go-around isn't the best way to go. By that time it can be too late.

TBI is the lame duck of the EFI world. The U-TBI code changes all of that. Stay tuned. . .

RBob.

 

And, here I thought it was mail order chip tuning.........

 

Well, yea, that too, lol.

RBob.

 

So maybe THAT's why my engine liked the large injectors? It delivered the AE when the engine needed it. I have a hard time visualizing an engine that would give you trouble if you had to carry over the AE to the next pulse. I can see why carbs have it a bit easier. Their pump shot and AE comes out FAST, when the engine needs it... very interesting.

 

Try looking back at some of my injector sizing replies. I've mentioned that, for what has to be the last 2 years, if not longer.

 

I must have missed it between the FSAE team and class. I never thought of the AE as having to be instant. From some of your replies about dyno testing it sounded like the AE was something that stayed around for a while in the intake effecting the AFR for a noticable amount of an engines powerband. So my visualization was that if it was around for a while then there's no real rush to get it in there so long as it's there. The reasoning doesn't make sense to me now but it did when I was rushing through this forum for all those years.