Fabspeed Exhaust -- Too Loud?

[michaelpetersen3]

Hi BG305. Unfortunately I was not monitoring my emission before or after the tune. If you have the Fabspeed tune, they may have deactivated parts of the emission monitoring to prevent the MIL light activating.

Hi Peter. I think you could install the stock mufflers on the Fab speed cat headers, but it would surprise me if it improve your torque / horsepower at lower RPM. Attached are my dyno runs, comparing the stock car to maxflow to supercup. I did not test the configuration you were talking about which is the new headers with the stock muffler. Nevertheless you can see from the charts that in all runs the Fab speed results were better than stock across the entire rev band.

[Qingdao]

Not a flat 6, but I have these mufflers. They seem to do alright at 2k rpms. I still need to put the car on the ground and give it a good rev to know for sure.


As for quieting them down; an insertable motorcycle baffle might be the best way to give it a bit of "quiet". Thats what I'm gonna do if my V6 is too obnoxious during driving.

https://www.ebay.com/itm/2-X-4-Exhaust-Muffler-Silencer-Baffle-Insert-Motorcycle-Chopper-ATV-Db-Killer/153732248608?hash=item23cb27f420:g:~CgAAOSwJzpc0yP 3

^^^ couple of these might do it right.