Best headers / exhaust combination
 

I have a set of GHL headers / exhaust on our car. These were installed on the car when we brought her home. Subjectively, the car sounds a bit anemic by modern standards and it may be that I've grown accustomed to higher revving motors, but I wanted to know if there is a system(s) that people recommend. Also any appreciable performance gains apart from sound? Thanks.

Not a fan of GHL myself. Particularly I would stick with stock headers unless you are doing a full build. A simple cat delete or 100 cell cat and a simple magniflow and chip will give you great sound and decent performance. If you want more sound a cup style airbox and 4" Dansk tip. I haven't found many claims to be worth the expense otherwise. IMO.

GL

fabspeed rsr exhaust system w dual outlet---- and itbs and motec lol

I concur, although there is a bit of drone around 3000rpm on the highway. Not a problem once you get past 115km/h (70mph)

OP, your username is familiar to me. You wouldn't happen to have been in the GM / LS world in a past life?

Thanks for all the input. Perhaps sticking with current set up or going back to stock makes sense...

Pardon my ignorance but what is GM / LS?

Anyone know what the standard Singer exhaust setup uses?

Haha, I guess not.

General Motors / LS series of engines.

Does anyone know how the Fabspeed headers compare to the B&B headers that Rennline carries? Thanks,

Scott from Fabspeed here. Our RSR header muffler kit, is a great option for your 964 Air Cooled if you are looking to upgrade the power, exhaust note, and throttle response of your Carrera. Our systems are hand welded here in the states, and have been a center piece of what Fabspeed represents for many years. We developed these headers almost 30 years ago, in efforts to wake up the older Carrera's with bolt on system that wont trigger lights. Check out some of the features of this system and feel free to reach out for forum pricing.

Porsche 964 Carrera RSR Header Muffler Kit

Loud & Aggressive CUP car sound with adjustable single or dual outletshttps://cdn2.bigcommerce.com/server6...0.1280.jpg?c=2

• Fits all Porsche 964 C2, C4, RS America, Euro RS and Speedster vehicles 1989-1994
• Increases horsepower and torque by 24 whp and 21 ft-lbs without optional sport cats expect a great increase in power when including them.
• Loud & aggressive sports car sound. Recommended for agressive street and track usage.
• RSR-style 1pc equal length mandrel-bent header tubes with F1 style high velocity 3-into-1 pyramidal investment cast merge collectors.
• Constructed from 14-16 gauge T304L stainless steel
• Dual outlet muffler system comes with all required hardware
• System can be orded with or without heat option and with or without sport cats
• Optional Muffler Bypass Pipes available for maximum weight savings, aggressive sound and increase peak Horsepower - For Non-Sport Cat Configuration Only!
• Includes Deluxe Tips but can be ordered with angle cut competition muffler outlets
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
• Official exhaust of Clermont, the esteemed
  RWB Atlanta 964 build
  .

https://cdn2.bigcommerce.com/server6...0.1280.jpg?c=2
Fabspeed's RSR Header Muffler Kit for the Porsche 964 Carrera increases horsepower and torque by 24 whp and 21 ft-lbs. This dyno result DOES NOT include Fabspeed's Sport Catalytic Converters, expect to see and increase in power when including Sport Cats.

Fabspeed Motorsport RSR Carrera

https://cimg2.ibsrv.net/gimg/rennlis...d96a24fb57.png

I’m already sold on Fabspeed, and love the sport cats in my 993. But seriously, can anyone provide an objective comparison?

I did so much to mine when I had it built so I cant tell you an objective comparison but I will say that my RSR dual outlet setup is great. Wife dosen't complain about loudness.
https://cimg7.ibsrv.net/gimg/rennlis...43f7f5dd84.jpghttps://cimg5.ibsrv.net/gimg/rennlis...5e16bb5c56.jpg

Fabspeed’s exhaust is junk. If you’ve got the money for theirs, then you should be able to spend an extra grand and buy the best that’s made buy M&M in Germany and used by the factory race teams.
Segmented Welded, not mandrel bent. Best money can buy.
”Our primary tubing is segmented and welded under pressure with the use of forming gas. Forming gas actually pressurizes the area being welded to create a smooth inner surface. This means that material walls in the bend are consistent and strong, ensuring reliability. But we don’t stop there, once the segmenting is completed, a tool is passed inside the header, which will actually grinds away any left-over slag. This process produces extremely durable headers with superior strength that ensures higher gas velocity and less exhaust gas restriction.”

https://www.fvd.net/us-en/RES9640000...hout-heat.html

I went with the M&M setup also,long tube headers for better low end.