Decell Pop.... Backfire

[canoehead]

Change your plugs

 

[porkchop]

if your sure it never backfired with the higher octane easy fix would be carry a bottle of octane boost with you for when you cant find what you need.

Maybe a fuel detonation issue?

I just burn 87 octane + a splash of B3C Engine Energy with no problems, sled runs fine.
Stock exhaust.

http://www.b3cfuel.com/products/engine-energy/