Re: [Amc-list] TBI fuel injection tuning...
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Re: [Amc-list] TBI fuel injection tuning...



Be careful here.
You get to good at this people will want you to do this for them and pay you!

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
" I realize that death is inevitable.
I just don't want to be around when it happens! "

 -------------- Original message ----------------------
From: Tom Jennings <tomj@xxxxxxx>
> Well on the third pass I nailed it pretty close to perfect (I think). I 
> was doing the recommended method, run what you got, collect a lot of 
> data, massage into a spreadsheet, calculate the errors, apply 
> adjustments to the tables, lather rinse repeat.
> 
> Being old fashioned I was doing this in row/column tables, not the 
> graphical table editor. When I finally looked at that (damn kids new 
> fangled toys) woah! ugly table! There was all these lumps and peaks... 
> but there was a sense to the rest of it, visually, that looked like all 
> the other tables I'd seen.
> 
> So I visually (only!) edited the table to shape it minus the stupid 
> lumps. Saved the original of course! Plugged in the mass of crap in the 
> car, loaded the binary image, and drove off.
> 
> Not bad... BLM was 140, ideal is 128, but that 140 was in every cell... 
> so I actually pulled over, used the table tool to multiply the entire 
> table by 1.10... two hours of driving and 5000 data points later, BLM 
> was 125 to 130 in all slots (faintly leaner in the low rpm/high vacuum 
> corner of the table).
> 
> Now I gotta turn off closed-loop and finalize the table, but it's 
> running pretty nice.
> 
> 
> I went back and looked more carefully at the tables in the originla 
> Howell EPROM, and they're not that good. There's funny peaks here and 
> there that to me, now, look like mistakes.
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