When i was going through my log, i noticed that the "actual timing" and "table timing" were off by nearly 10* at 9000rpm. As i looked through Crome, Neptune, and Hondata, I noticed that they all had some sort of table setup to advance timing over what the table timing was based in RPM. Was just curious why this is. I found some guys on the Neptune forum saying that needs to be set to 0 across and just go off of table timing. Any insight would be greatly appreciated.

Im referring to the last table in this screen shot in Hondata...

 

I dont really understand the need for a separate table... Just zero the table out and tune off the main map.

 

correct me if im wrong........the section you have shown is related to ignition dwell angle.... not actuall timing.

 

I have never played with Hondata so I maybe wrong? But, the RPM Compensation looks like your problem. That being a Trim table I would think 14.75adv@8000rpm is adding that on top of what the Ignition Map is already doing? I'd findout about that table asap. I honestly don't see the point to that other than making your actual Ignition Map more Flat, if thats the case and it's tuned properly you shouldn't have a problem but idk? GL!

 

Yes it has something to do with Dwell, its an OEM table...personally I just leave it alone and tune the car for MBT

 

Xeno knows what's up. This is really what you should be doing.

Let's face it. These distributors aren't accurate at high RPM and the ECU needs to compensate. I give access to the "Actual timing" output in NepTune so you can see everything the ECU is doing behind the scenes. If you don't understand it, don't mess with it!