What does increasing the SPARK do? At the last Test and Tune day, I decided to add a degree or two across the whole range and the result was that every time I hit the gas(not flooring it) my tires would break loose. It felt awesome, but I wasn't sure if this was the reason why my car was suddenly breaking traction so easily.

 

That advances the timing. Make sure you are running higher octane gas.

 

We found that the spark advance doesn't seem to work... we watched the timing via datalogging.... We added the max but the amount of timing advance stayed the same...

Now it could be you're on a different release of the software... ???

 

@ Doug/John

Are we stuck with the version at purchase? My dealer gets uploads every day. Should I periodically go in and have my SCT "recalibrated" with new codes or something?

 

You can download them yourself from the SCT website.