The green and blue lines represents the 1M with stock mid-pipe and muffler. Black and red with Mad Dad mip-pipe and Borla prototype muffler. Max gain is about 15 hp and 15+ ft/lb. We can see most of the gains are in the mid to higher rpm range so we know the stock system is not bad in lower rpm with lower exhaust flow, but can be a bottleneck once the flow demand goes up.
Current mods are GIAC Stage 1, AFE Stage 2 closed intake and ER CP. ETC FMIC is next...We will then report back on the gains.
Link to video/sound clip here:
http://www.1addicts.com/forums/showthread.php?t=627278