GDS Racing
Exhaust Products

Custom, Mandrel Bent 3" exhaust systems for turbo cars

Lightweight 304 Stainless Steel mufflers - Machined flanges
Robert Dupree's 4-rings exhaust tip on an Audi 5000 CSTurbo Quattro (photo R. Dupree)

Intricate curves - TIG welded (Heliarc) by hand

Dupree Exhaust System, Rear View (photo I. Rautenburg)Dupree Exhaust System (photo I. Rautenburg)

Here is a comparison of a GDS racing full 3" exhaust system along side the original equipment system from Audi.  This is Bob Dupree's system as used on his '87 Audi 5000 CS Turbo Quattro.

5KCSTQ 3 downpipe, built for Jeff Goggin (photo J. Goggin)

Here is a closeup of a GDS Racing 3" downpipe attached to a real KKK RS2 turbocharger.  This pipe fits in '86-on 5000 Turbo Quattros.  It is a very tight fit, and must be custom fit to every individual vehicle.

5KCSTQ Muffler w/ 4-rings outlet (photo E. Fahlgren)

This is the muffler and 4-rings tailpipe that I built for my own '86 5000 CS Turbo Quattro.  This car also had a full turbo back 3" exhaust, except it had no catalytic converter.  This is for off-road use only.  This car was sold in December of 1998.  My next project is a dual exhaust system for my '91 Audi V8 Quattro 5-speed.

These photos are for your information primarily.  I am not aggressively pursuing exhaust work as I am very busy with other responsibilities, however, if you have a special need, give me a shout.  I'd always be glad to talk about exhaust systems.