Auto VE tuning?

[kbracing96]

How many of you raise the VE table 15% before doing auto VE tuning? I did this as the guide said and have had to bring the VE table back to close to where it was before the increase. Also, now all the cells that I don't normally get into with my current setup, are much higher and I have a big valley in my VE table. How much smoothing do you guys do? I don't have access to a dyno, so all my tuning is done on the street with a wide band. Would I be better off going back to a stock VE table and starting over so as to keep the VE table looking more sane? Any opinions are welcome here.

[Dirk Diggler]

I started from the stock tables and went from there taking it easy on the first few passes on the ve table

[Tordne]

I have found that the "Copy and Fill" option in the MAPs works very well for those cells that you perhaps don't hit.

I think I pumped up my VE table by 5% when I started and that seemed to be in the right bal park. And, like Dirk Digger basically went gently to start with.

Cheers,

[BowlingSS]

I did not increase my VE Table. The first write up I had did not even mention increasing the table. There will be some cells you will not be able to hit. It does help if you have some hills to hit the lower MAP's.

Good luck.

Bill

[kbracing96]

That's kind of what I was thinking. I think what I will do is copy the area in my VE that I have tuned and paste it back into the stock VE table and fine tune from there. Should have a better looking table I would think, taking it easy of course.

[deezel]

Depends on what has been done to your tune already. If the VE table has already been adjusted, 15% may be a bit too much.

You might try using your first attempt to judge a good VE increase. How much did the BEN factor reduce the VE (after the 15% increase) in the cells where you did get data? Use that as your starting VE adjustment. For example, if you used VE+15% to start and then got BEN factors around 0.90 (reduce by 10%), that means you only needed about +5% added to the VE table instead of +15%.

[caver]

That +15% increase is for safety some of the cars I have done needed close to that.
Nobosy wants to run a car lean and risk engine damage while tuning.
I would go with Deezels method to get in the ballpark as you are not going to melt things starting rich.