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. _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list