Hello everyone,

I'm currently tuning a cammed LS3 and I've already tuned MAF only. Now I'm on to VVE tuning. Just curious how you guys are smoothing the VVE values? I've data logged VVE vs LTFTs and got my part throttle LTFTs very close, but the VVE table is very rocky because I haven't done any smoothing, so it doesn't idle/drive very well in speed density. Just looking for tips on how you guys smooth the table up. I don't want to go crazy with the smoothing feature and throw anything off. Please let me know. Thanks

 

Tuning maf only you turn ve off and just run maf for alot of applications. While thi may not be the most popular way to do it, quite a few are still tuned that way.
If you want to work on the vve portion download the bluecat tool. it works pretty good.

 

The HPTUNERS VVE feature is pretty good. I select the whole table and smooth it once. Then I generate the new constants and put them in the tune. When it reloads it'll be pretty smooth.

 

In each zone make sure there are no inflection points (i.e. make sure that curvature does not change sense).

Make it fairly smooth paying attention to make unhit cells to fit with the hit cells.

A smooth surface gives better polynomial coefficients.