Variable Cam Spark

[chakoman]

I noticed on my 07 Silverado I have a spark table named variable cam spark. My question is what exactly should I do with this. Do I just leave it be. I logged it and it does add to the base advance. Anyhow, just wondering if anybody has any experience with th vc spark.

[EC_Tune]

Does your engine have a VVT camshaft?
If so it adds/subtracts spark based on camshaft position.

[Schexnayder racing]

i have an 07 cadillac escalade, with the 6.2, it has the variable cam, this has a supercharger!! should i zero it out??? been having detonation problems?? could this be some of the problem???

[chakoman]

I believe I do have vvt. It is an 07 NBS with the L76 engine and L92 heads. I do know the Variable cam spark is adding to the base. I just do not know how to work with it.

[Schexnayder racing]

i zeroed the table at my max rpm, and 1.36 grams of air.... detonation problems gone!!! just smoothed out the rest of the table... runs great!!

[chakoman]

does anybody know what the effects of zeroing out the entire table would be.

[EC_Tune]

Sluggish performance when the camshaft moves around.
I usually attack the variable cam spark after I work the main table. If KR pops up afterwards it's VCS.

[Schexnayder racing]

i just zeroed it, and took out where it was expireenceing detonation.. nowhere else..

[ccrane0044]

If I add timing to the High Octane spark table should I be adding the same amount of timing to the Variable Cam Spark table as well? That makes sense to me but I'm new at this

[verlon]

No. VCP Spark is a modifier and some part of it adds to the main spark.