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Ed Wright · 04-17-2014, 11:48 AM

That was before I started tuning EFI. Never tried to hack those ECUs. Did, however, have a fix for the extreme lean idle & tip-in issues they developed. A 36" drill bit in a pin vice. The plastic tube to the MAP sensor got a hole drilled in it. They has a rubber hose slipped over one end. Played with that with my 4 gas infrared exhaust analyzer hooked up. Very high HCs, eratic idle and tip-in stumble was common after 50,000 or so miles. First car, I drilled too large a hole, was right next to the runner tube. Just slipped it forther onto the plastic tube to cover the hole. Knew I was onto something just went too rich. Found .036" was good for about all of them. Ran like a different car.
Had other shops ending them to me for 'the fix". LOL

Yep. Still slower than a Q Jet.

04-17-2014, 11:48 AM	#12
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Ford 7200 vv carb. That was before I started tuning EFI. Never tried to hack those ECUs. Did, however, have a fix for the extreme lean idle & tip-in issues they developed. A 36" drill bit in a pin vice. The plastic tube to the MAP sensor got a hole drilled in it. They has a rubber hose slipped over one end. Played with that with my 4 gas infrared exhaust analyzer hooked up. Very high HCs, eratic idle and tip-in stumble was common after 50,000 or so miles. First car, I drilled too large a hole, was right next to the runner tube. Just slipped it forther onto the plastic tube to cover the hole. Knew I was onto something just went too rich. Found .036" was good for about all of them. Ran like a different car. Had other shops ending them to me for 'the fix". LOL Yep. Still slower than a Q Jet. __________________ Ed Wright 4156 SS/JA