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Originally Posted by Coyote X
I am sure there were some pretty advanced systems around but I am really generalizing with my descriptions. When I talk about OBD1 systems I am talking about the older computers that normally didn't have the cpu power or memory to handle long term fuel trims. Some did but most didn't.
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Every single Bosch system I've deal with does. Even my mechanical KeJet does in its electronic piggy back. It simply adds or subtracts fuel pressure based on the lamda sensor switch point the last few times times the ignition was turned on. Simple but effective. Maybe this wasn't a popular feature on GM cars. They were very fond of TBI for a long long time so I wouldn't be surprised.
I'm using a bosch LSU and 14point7.com wide band controller/data logger. Megasquirt should be ready to install in a couple of weeks.
Quote:
Originally Posted by mwebb
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I drive between Seattle and southern California (usually with a week long stop in the Bay Area) and back about 4 times a year. FE is consistent no matter where I fill up. Its all E10 now no matter where you fill up on the west coast. I used to see a 1-2 mpg difference between Oregon and Northern California gas before E10 invaded the PNW. Not anymore.