[chross12]

I have little to no knowledge on tuning. My question to the forum is with a whipple on a 2016 2ss with an a8.. I had a relative new shop
in the area go over the tune on their chassis dyno. The kid said the way he learned was to take out the knock issues that the factory whipple tune had. I recently purchased a set of toyo proxies R888R and traction improved greatly but at high rpm is still knocks and only in high gears? when we tuned it initally we had a issue with tires slipping at high RPM. Im wondering if it needs a professional tune or if its just running out of fuel? Thanks in advance