89vette

I'm starting with a 90 Vette bin. I liked my timing map that I had with the 165 ECM. Can I just use the same table and plug it into the 7730 bin? Are the LV8 and MAP load values fairly close? I have no idea how to tune part throttle timing. The idle timign jumps around from 7 degrees to about 15 degress when it lumps around 800 - 825 - 850. What should the timing be at idle? Guess I'm asking what I should be shooting for. I understand WOT timing down the right side. Its the part throttle stuff I'm fuzzy on. Also, upon start up and driving around, all my block learns are 108. Should I start by wacking out 16% (*.84)of all the VE values to try and rough it in first?

Thanks!
Jason

Grumpy

Nope, the 255 timing could be put in the 100 K/Pa column, but that's about it.
Thou it will give you some hints about where to be at say cruise. With MAP you can retard the begibbers out of the timing during overrun.

Set the timing, as per the manual at 6d and then work on it from there, yes it will bounce around when everything is hooked up and you put a timing light on it

leirch

Jason,
About the VE being around 108. I would adjust the ENTIRE table(lower and upper), by about 4, try again. See what that did.
Or like you said, 108/128(.84??), then compare the changed numbers to the ones you had before. Whenever i change something with that formula, i always add .4 or .8 to or from the new values, that way i have a "safe" zone, incase i went to far or not enough.

Brendan

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