[Amc-list] Tuning TBI fuel tables on the Classic six
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[Amc-list] Tuning TBI fuel tables on the Classic six
- From: Tom Jennings <tomj@xxxxxxx>
- Date: Fri, 14 Nov 2008 16:07:50 -0800
It's not hard, it turns out, just tedious. None of the www pages I found
actually laid out how you get from collected data stuffed into a
spreadsheet, into corrections for the fuel tables.
It's easy enough, but you gotta be comfortable with spreadsheets.
With one 40 minute drive I collected enough data to correct the tables
within 5 - 10% of perfect. (I suspect the last 1-2% is very hard... but
I stop caring around there anyways.) I just did a second pass, the
errors were even smaller (.98 to 1.04 mostly). Next I'll turn off closed
loop and make sure the tables are right.
ANd for the hell of it, I drove a bit with the "EPROM" removed, to check
limp-home mode (to make sure I have one!) Didn't freeway, but it ran
pretty OK. That's nice to know!
If anyone buys a Howell TBI kit and bolts it onto a 232 in a passenger
car, I have a BIN that will be a hell of a lot closer than the one for a
258 Jeep.
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