[mightymoose]

thats the cel from the MAFT-pro runs rough, lunges at or around 2800-3200rpm(but not lean, just a bit too rich but nothing that would cause the car to jump, doesn't do it in the early mornings, drive it for about 30 mins it begins, no intake leaks, essentially everything is new on this setup, double checked maft-pro setup in SD, everything is as it should be. the only thing I can think of is the spark plug gap is too big.. .038 running an MSD DIS-4, I'll lower the gap to .032 tomorrow,
3.1L
DR-650's
DRR stage III heads
720 injectors
hotwired pump w/42 psi fuel pressure
oh yeah, ecu was rebuilt a yr ago--ran great on previous setup(ARC-2)

currently have SD mode with 4.80 version software

car runs fine until that 3000k rpm range, the LC-1 wideband will at times stick on about 7.9 afr (essentially not working), I've checked/double checked the connections, the ground, etc, it is wired just as in the diagram as suggested by the 1rst page of this thread.

Seriously this car was running top notch no more than 2 weeks ago and now

things I've done
verified everything is connected properly
verified setup/tune, etc
checked all sensors except wideband 02(about 4k miles on it)

intake pressure test--fine
any vacuum/exhaust leak--fine
checked tps
checked IAC, etc, etc

things I havn't done:
replace spark plugs with lower gap
recalibrate LC-1
play with tune(which I don't think needs it)

any suggestions..

thanks
James G