Ya Can't do that

[Carl Summers]

Hiya Bruce,
   I don't think you have to rewrite the code to keep it in closed
loop,,,there is a lookup table starting at 29E-2A3 that controls closed
loop function 29E is mph, 29F is TPS, 2A0 is open loop rpm off, 2A1 is
open loop rpm on,,but I don't know what 2A2,3 does...I only needed to
get one particular vehicle out of closed loop at idle cause cam was way
too big too idle at 14.7 AFR,,,so feel free to play with those areas and
please let me know of anything you find...BTW does anyone else know
where the constant is that tells the processor what AFR to try to
achieve????Also Bruce, the 87-90 454 chips stayed out of closed loop at
idle so compare the table to a 350 so as to get an idea.....HTH's
-Carl Summers

Bruce Plecan wrote:
> 
> Just in case this all goes right, instead of using a external box,
> and drivers.  Anyone think they know the code well enough in
> a 1227747 to keep it closed loop at WOT?.
>   Was thinking about the 3914 chip to O2 sensor feedback devise,
> might want to have a % TPS, and a time delay to enable that...
> That would probably be for someone who didn't want to write their
> own prom, and the ecm has a %TPS, and time delay for WOT.
> It might feel smoother to set the feedback to merge with that
> rather than slam..
>   Bet ya can't.
> That'ill get'em.
> Cheers  Bruce
> Ya feedback at WOT that's way too much, but hey an idea..