[My87z28]

So I have a ‘16 1SS 6M. The only thing currently done to it is custom 3” X-pipe cat-back exhaust. I just dropped it off yesterday morning at HPA (HorsePowerAddicts). They are putting 1 7/8” Kooks headers, cat-less connection pipes, E85 flex fuel kit, porting the stock intake & throttle body, and Roto-fab dry filter CAI. Expected E content during the tune will likely be around 60-65%. I’m also having them install BMR U&L non adjustable trailing arms and upper control arms as well as the cradle lock out, but that won’t add to the hp...

I am having them do a baseline so I will have the before and after numbers.

So what do you think the final numbers may be? What gains do you think the car will see?

I’m going to stay to the low side of realistic and say around 45-50rwhp gain, at around 455-460rwhp.