Fabspeed Exhaust -- Too Loud?

[PeterBleakney]

I'll add my 2 cents here. I had a Fabspeed Maxflo exhaust installed on my 2001 Boxster S. The upside is that it sounds great when hammering on from 4000 to the redline, and there seems to be more urge than before up there, but on the downside, the drone at 2000 rpm is driving me nuts and there's a noticeable dip in midrange torque. I'm wondering if it's possible to reinstall the standard muffler with the Fabspeed secondary cat delete pipes

[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.

[2ata]

Originally Posted by PeterBleakney

I'll add my 2 cents here. I had a Fabspeed Maxflo exhaust installed on my 2001 Boxster S. The upside is that it sounds great when hammering on from 4000 to the redline, and there seems to be more urge than before up there, but on the downside, the drone at 2000 rpm is driving me nuts and there's a noticeable dip in midrange torque. I'm wondering if it's possible to reinstall the standard muffler with the Fabspeed secondary cat delete pipes

This is interesting.

While not an exact comparison, I have the Fabspeed MaxFlo on my 3.6 996 and there is zero drone.