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mark houghton mark houghton is online now
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Join Date: Jul 2008
Location: Central Washington State
Posts: 4,435
Quote:
Originally Posted by JFairman View Post
Some people have removed everything electrical under the driver seat. The lambda computer or k-jetronic ECU, the enrichment relay that bypasses the lambda box at full throttle to richen the fuel mixture, and the speed relay rev limiter, and the wire harness that goes from it to the shock tower cross member in the engine compartment and the car runs great. It will be more reliable without the 25 year old relays and prehistoric lambda emission control devices that are on CIS.
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Jim, thanks for chiming in. It's been a couple years since I played with the idea of deleting all the lambda crap. I currenly run open-loop by simply unplugging the O2 sensor and letting the freq valve lock into whatever fixed duty cycle it is (I can't remember, but it doesn't matter).

I do know that when I unplugged the freq valve in addition to the O2 sensor, she ran really really lean if I recall and I wasn't able to compensate enough with adjusting the mixture control screw - so just went back to letting the freq valve buzz happily away. Back then you did a great job of explaining how the freq valve interacts between the upper and lower chambers of the fuel head (or something like that, again it's been awhile).
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, B&B intercooler, stock 3LDZ.
Old 02-24-2011, 11:15 AM
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