I was just kidding. A fire ball + the sound you described in your first post can't be normal. Just use the 2 step, we already have the nls.

 

I don't have their tuning software as I'm waiting to install the GM Performance upgrade kit. That would be something you'd have to ask them or one of their reseller/authorized tuners. It definitely is something that they should be able to support as all it is would be a change in the calibration since the feature is software controlled, but I don't know whether they have reverse engineered it yet.

 

yea the owner of the shop said he thought he was going to see a turbine wheel in the front of the other car. hahah.