[mark houghton]

What the hell is an LWFW? I thought I had all the acronyms committed to memory, but it's late in the day and I'm tired already.

What are your AFR's reading at idle, etc. Hunting at idle is usually an easy fix with adjusting the mixture, but if you're also seeing a stumble at high rpms then something else is amiss. Need more info on what your AFR's are doing...your term "amiss" doesn't tell me squat. Did this just happen out of the blue one day, or has it always been there and getting progressively worse (you know, like you were blasting down the road one day on full boost in all 4 gears, burning rubber and just running like a bat outa hell, and afterwards the symptoms occured)?

Start with the simple stuff first, like plumbing. You may have an air or vacuum leak. Are other aspects of tuning spot-on (timing, cap, rotor, plugs and wires good, etc.). Stumbles and hunting usually are fuel mixture related, and with CIS there are several things that can mess with your mind.

Don't give up until you give up, 'cause EFI will cost you a boat load more than what is probably a simple fix on the CIS. CIS is dependable....when it wants to be. And when not, it can drive you to drink.