Quote:
Originally Posted by 801coppertop
Andrew - (I have spent much time on your site, thanks so much for all the great information!) Ive been driving around with an oscilloscope setup in this fashion for a bit. Ill give it another go once I re "baseline" the CO and Idle and let yall know what I find.
I also have datalog showing the issue if thats at all helpful.
Top is running well between 45-55% Dwell -
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AFR - Running too lean! This was indicated in post #9. You also stated this in your first post. Most likely your CO is below 1%, and NOX is high. Good hydrocarbons, though!
Quote:
Originally Posted by 801coppertop
Bottom is after heat soak startup - running not so well.
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Way too rich for too long.
Quote:
Originally Posted by 801coppertop
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Again, analyze the problem first without the Lambda ECU, and a small CW turn of mixture screw.
You are aware that the ECU is not required for running, but only for the following;
1. enhanced cold start
2. smoother acceleration
3. emissions control
If the problem still occurs, it should be easier to find.
Remember before Lambda, the 911 Porsche ran great!