If I set the dist. at 6 deg, would I need to set it the same at the Initial Spark Advance constants table.OR, leave it at 0 dist. and advance in initial. Running rich almost everywhere, with some high knock count, would this by chance help some with both. Thanks

 

What year is the car?

 

Sorry abt. that. Its a 92 PU, with 7706 bin, TBI. I didn't know if I set it the same in both places, dist. and chip, if it would offset each other in some way, or increase way to much in some areas. Is it best to have set in 1 place verses the other? Hope that makes some sense to you,and, sorry abt. the PU thing, but you guys are the only ones with TBI info, that we can rely on!:hail:
Thanks

 

if you set the initial advance to what the dist. is set at, it will not change your total timing. I am a fan of having it set to what it really is though. If you wanted to make a global change, you can change the spark bias constants (should be about 20 stock, if you drop to 14, it will add 6* to everything). The best option is to change it via the tables. Becuase you likely don't want to add 6* of timing to everycell in the table.

 

Thanks for the info Dewey316. Mercie, i have been told that these were rather lazy with the timin, mine is set at 10 in the main spark bias. I'll change some there and record some data. I'm a greenhorn at this, its true what I read somewhere, it gets ADDICTIVE, and I'm just starting, many thanks for the info.

 

No problem. I'm sure deminted, or Jon will chimb in with more info from the commented hack. but the rundown on the spark.

It takes the value in the tables for timing (coolent comp, rpm vs map vs spark, PE adder, etc) then subtracts the bias, and initial values. So if you are commanding 45 in the tables, subtract 6* for the initial advace, then subtract 10* for the bias, and you end up with 29* of advance.

So you can see how making the bias 8 instead, would give you 31* advance.

Thats all fine and dandy. BUT, there are times when you don't want more timing. if you have Hi-way mode on, it may already be commanding 40*+ of timing, so you want to be carefull of adding timing golbably.

does your aldl stream output spark advance? if it doesn't you might try to PM Rbob and see if he knows the address and values to get your computer to spit out the SA info.

 

Man, that second paragraph, got me gunshy, I think I'll leave that to later, when I have more time into this. I have WinALDL and no spark readout, don't think I have the hwy. mode either, have looked for that for commute to work purposes for the mileage help maybe. Thanks again