The Maxflow Exhaust System adds power and sports car sound all while reducing wait from the rear of your 911.
The Fabspeed Maxflo Exhaust is the perfect exhaust for everyday street driving and anyone that is looking for a system that isn't too aggressive but intoxicating throughout the RPM range. Improved sports car sound; deep and throaty while maintaining a street-appropriate volume. No need to worry about waking up the neighbors or irritating the passenger, the Maxflo exhaust is the ideal mix of an exciting and refined sound.
During our testing we saw gains of 4 whp and 4 ft/lbs of tq.
Fits all Porsche 911 Carrera vehicles 1976-1989
Adds 4 whp / 4 ft/lbs of tq with improved throttle response
Improved deeper and throatier sports car sound
Maxflo Mufflers are radius stress relieved, hydro-formed cases that are pulse TIG welded with 2000 degree ceramic fiber and stainless steel wool packing.
Complete T304L stainless steel construction; 14-16ga CNC mandrel-bent 2.25” tubing
Includes Deluxe 4.5" Oval Style Tip
Simple DIY bolt-on installation, no cutting or welding required
All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
- Requires slight modification to the factory rear bumper for proper fitment of the second tip outlet
- HP (whp):
- TQ (ft/lbs):
- WT (lbs):
My 81 911SC had a horrible drone from 3-4K rpm due to a cat bypass pipe and stock, probably heavily worn muffler. I shopped around and decided the Fabspeed made the right noises for me so I ordered the Maxflo and the 2 into 1 premuffler. Installation took 2 hours. My system came off very easily. Quality and workmanship of the kit are top notch. Everything bolted together well. A little adjustment and looks nice. The startup sound is awesome and it settles into a nice deep, solid sporty sound. The noise inside the cabin is not intrusive at all. The drone is gone. I have been accelerating with the window down to hear the very cool sound. At steady throttle or with the windows up, the system is very civilized. I’m very pleased.
I was looking for a mellow exhaust for my '85 911 that didn't drone, and just gave a slightly deeper sound, and this fit the bill perfectly. Paired with the sport cat it's quiet, with a bit more rumble at idle and bit fatter, throatier sound through the revs. If anything it could be a hair louder or have a bit more bark, but if I wanted that I'd probably just delete the muffler completely. This is a great sounding system that you could drive miles with and not end up with a headache :) Fantastic build quality as well. The welds are perfect.