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I'm not from the EPA.
Excuse my unplugged brain, but just what are the CO pot, the CCP, and the booster plug etc being talked about above?
Are you disabling or modifying the closed loop processor control of this engine? Is that really necessary? or even desirable
I'm not from the EPA.
Excuse my unplugged brain, but just what are the CO pot, the CCP, and the booster plug etc being talked about above?
Are you disabling or modifying the closed loop processor control of this engine? Is that really necessary? or even desirable
...
Earle, checked the USPS tracking and the CO Pot was out for delivery at Jackson, WY today.
Hi Roger,
Yes, the adaptive learning feature is certainly a positive attribute on the 1150. I really wonder about how or if this would work on the 1100. Somebody recently posted on one of these forums that the 1100 does not use closed loop. Wish I knew a bit more about just how the early Motronic actually works. ...
When it comes to the topic of surging all sorts of ideas and theories abound. Not all exactly accurate however..
Roger is correct. There is a pressure sensor on the ECU main board and it is not in the airbox. I have seen it and recognized it for what it is. On my old '96 RT you could actually feel it change over sometimes when climbing severe grades at steady throttle. It would hiccup for a brief second and then keep on chugging along.
Another comment was that the "booster plug replaces the air temperature sensor in the airbox". Not exactly true.
In fact it is added (in series) to the existing thermistor circuit in the airbox to spoof the ECU into "thinking" the air temperature is 20 degrees celsius colder than it actually is. This has the effect of forcing the ECU to use a richer setting to compensate for the cold thus reducing surging. Supposedly...
What percentage of 1100s have the surge problem? I bought a '99 R1100RT a year and a half ago, and in the past 6300 miles, I have not experienced any surging.
But why would you want to willy-nilly disable the closed loop operation? It gives a stochiometric map-updating altitude trim (I know there is a pressure transducer in the Motronic), inlet air temp, and humidity trim (which has no sensor) and a fuel quality trim which would help us burn this darn corn liquor stuff.
If something's broke, fine - rip it all out like we did with our POS cars in the 70s. But why disable 20 years of software and hardware improvement benefits of a processor controlled engine? unless it is because of design oversight on the airflow matching assumptions of the 2 cyl boxer engine.