Brent is awesome , I'm 100% positive it wasn't tune issues. Just want to figure it out. They have always done me great. We will have a plan and maybe build it bigger.
I feel your pain. I had a local very well known tuner/engine builder tune and install cat back, upper pulley and other little items on my 12 gt500. Last year after leaving the local hang out, it was cold out and I jumped on it in 2nd grear and popped a piston. Till this day, no way to know what caused it. . Towed it to brenspeed where they did the FRPP short block, lower pulley amd a few other things. Stock blower it makes a tad over 600 and the tune is awesome. Car runs and drives stock. Brenspeed did a great job.
I wonder if an oil separator was on his engine? That could possibly account for blow by causing octane loss along with cold temps increasing boost and a 10% under drive pulley buzzing things up. The companies selling the separators claim potential problems if blow by is not controlled???
i don't think you are understanding the oil seperator... without one, blow by is not controlled and can decrease octane (by a slight bit, not by much, unless you are having other problems). The seperator REMOVES oil particulate and prevents this octane loss.
Maybe there's no update. He may be trying to get funds to do the rebuild or the shop hasn't been able to get to his car fast enough. My car has been down 3 months because the rebuild process depends on so many different people coming together.