Here you have it folks, a baseline for power gains before and after a header and exhaust upgrade on a SC Miata (BEGI MOAB).

Upgrade - JR Header, RB Sport Pipe, and RB Exhaust.

Dyno before - 214.02 RWHP
Dyno After - 214.46 RWHP

It's OK, I reallly wan't expecting much and it does sound badass
The good news is I bought the items used from board members here and did drop a few pounds from the car since it is mainly used for autox.

I do believe I will pick up some power when I replace the AFPR with the MS I bought from Brain a couple of months ago. I just need to find time and read up on how to install it.

 

But what about the curve under the peak? Peak #'s are only half the equation...