I did a search... and I know this has been asked before. But IM still not sure.. what is the correct way to figure total timing?

I have the initial timing set a 6* line disconnected. IM looking at my scanner and its telling me there is 26*. What is the timing 26* or 32*? Same thing with the tunercat software.. if I put in say 24* in the block is it 24*? Or 24* plus my 6*?.

I didnt know if the software already figured it in or not.

Thanks!

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90 IROC
SuperRamed 406
Trickflow 23* heads

 

Not sure on AutoXRay but with TunerCat for the $8D mask the value placed into a cell in the Spark Advance tables is the TOTAL timing. This value includes the initial timing. So, if you put 36 into a cell and your initial timing is 6 degrees then the total timing will be 36. You do not have to add the 6 degrees back in.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Tim, what about all the other variables? Say cold start, PE spark, spark knock, etc. Do these get added into the data stream or does it just display the main spark table timing?

 

The Total Timing is the Total Timing that the ECM is "trying" to give you. If you do not have knock retard occurring, it should equal your "relative timing" plus the amount you defined in the "base timing".

But, if you have knock retard occurring, I have found that the Relative timing is reduced BUT the Total Timing remains the same. So you have to either add your base to the Relative Timing to get your Effective Timing (after Knock Retard) or subtract the "Knock Retard" from the Total Timing.

I really think the Total Timing should be called "Desired Total Timing" as it does not account for Knock Retard.

 

Thanks guys!

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90 IROC
SuperRamed 406
Trickflow 23* heads