View Single Post
Old 11-25-2008, 06:15 PM   #63 (permalink)
bbjsw10
Addicted
 
bbjsw10's Avatar
 
Join Date: Jul 2008
Location: Findlay,OH
Posts: 555

bbjsw10 - '91 Geo Metro Xfi
90 day: 51.06 mpg (US)
Thanks: 0
Thanked 11 Times in 7 Posts
Quote:
Originally Posted by RealGomer View Post
Is this a possibility? If you could figure out what sensors under what conditions trigger the Deceleration Fuel Cut Off (DFCO) it might be worthwhile to figure out how to trick the computer to do all the work. Each car may be a bit different; but if the appropriate sensor feed voltages could be adjusted by the push of one button; it should activate the DFCO and not set off any fault codes. This should ensure that all emmisions systems would activate properly, i.e. no fuel dumping outside of engine spec.
I would assume this is from tach pickup showing above certain rpm and tps showing idle position, you could some how use a 555 to make a high false tach signal and tps is already at idle position when EOC-ing. My thoughts anyway I do like the idea though. I would think a latching circuit would be nice for this one push to engage then push again to disengage.
__________________
  Reply With Quote