Time to update mine too.
As of today, 348.1HP on ASG.
No extra mods apart from the dump pipe (flat plate to bellmouth), and we cleaned the tune up slightly. Was hoping to punch out 360+, but the original factory clutch wasn't too happy about that
From 339HP on SW, to 348 on ASG....ASG reads around 7-8% lower than SW. So its picked up 35-40HP just from a dump pipe and some tune tweaking!
Happy as a pig in shit right now