$225.00 Sale:$202.50
Model #AU-EXH002P
This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.
Purchasing this product requires you to sign our Vehicle Compliance Waiver here.
The factory (OEM) catalystic converter (Cat) is very restrictive on the exhaust flow in the exhaust system. Exhaust gas must pass through tiny "honeycomb" passages in the OEM cat which restrict flow and cause turbulence which in turn hinder performance. By removing the OEM cat with the Evolution Racewerks Test Pipe, power is unleashed!
The K03/K04 turbine (exhaust) outlet is almost 3" in diameter. That is why Evolution Racewerks' test pipe features a 3" design that reduces to 2.5" (to bolt up to OEM and most aftermarket downpipe/exhaust systems). Also, Evolution Racewerks use a "flare" type reducer to reduce the size to 2.5" instead of the "step" type reducer. The advantages of the "flare" reducer is that it has a nice smooth transition which causes less turbulence than the step type reducer, therefore producing more power. Also, having the transition as far as possible to the turbo improves performance as well. The Evolution Racewerks Test Pipe's 3" to 2.5" design is superior over other test pipes that are 2.5" in diameter from inlet to outlet because the 2.5" test pipes will have a "step" right at the outlet. Since the OEM K03/K04 turbos have a turbine (exhaust) outlet of almost 3", the flange of the 2.5" test pipes will actually make a "step" right at the turbo outlet. This step acts like a wall against exhaust flow and when the exhaust hits it, major exhaust turbulence is created, at the worst spot possible, right at the outlet of the turbo. If you have a 2.5" test pipe, check it out. Look at the inlet flange and you will see a "ring" of carbon deposits on the flange. This is the "step" that the exhaust flow is hitting.
The Evolution Racewerks Test Pipe is completely constructed from quality 304 stainless steel and is polished to a mirror finish. The pipe, flanges, oxygen sensor bungs everything is 304 stainless steel, even the welding rod Evolution Racewerks use. The piping is fully mandrel bent. Evolution Racewerks test pipes are 100% TIG welded for quality and strength. The flanges are welded inside and outside to the pipe for added strength and extra longevity.
True to ER standards that Evolution Racewerks' current customers enjoy, everything needed for installation is including the downpipe inlet gasket. Every bolt, nut and washer that is on the catalystic converter/test pipe is replaced with high quality full stainless steel bolts, nuts, and washers! Yes that's right Full stainless steel, down to even the hardware.
Features:
WARNING: Cancer and Reproductive Harm
| Make Vehicle | Model | Submodel | Year | Engine | Notes |
|---|---|---|---|---|---|
|
2005-2008 Audi A4 |
A4 | 2005-2008 |
Evolution Racewerks started out as a custom fabrication shop in 2004. Its experienced staff of fabricators and welders can virtually craft any part that you want. Evolution Racewerks’ talented welders (TIG & MIG) are skilled at working with aluminum, stainless steel, and titanium. The company takes pride in helping petrolheads build their dream race car from the ground up. Evolution Racewerks has you covered from the beginning stages of chassis preparation, which includes steam welding and roll cage construction, to the complete assembly of the car.
If you dream it, Evolution Racewerks can build it. The company specializes in a number of different areas that all come together to create automotive works of art. Evolution Werks’ experienced technicians can install just about any part you may have. Nothing is impossible with the team’s custom fabrication, tuning, and suspension skills. The brand is known for fabricating custom welded (TIG & MIG) steel, stainless steel, aluminum, and titanium parts. As aforementioned, Evolution Racewerks’ specialty lies in roll cage assembly and chassis welding, as they have built numerous roll cages to meet all racing rules set in place by sanctioning bodies. Whether it is NHRA drag racing, SCCA, drifting, or road racing, Evolution Racewerks can do it all.
Evolution Racewerks takes pride in being a one-stop shop for building, servicing, and pit crewing for your race car. It boasts years of experience building race cars for its customers, many of which brought home trophies and were featured in several magazines.
Vivid Racing has an extensive inventory of Evolution Racewerks products that will enhance the look, sound, and performance of your vehicle. We carry intercoolers and intercooler pipes, catted and catless downpipes, oil cooler upgrades, charge pipe kits, brake lines, and more! If you have any questions regarding the parts listed above or about Evolution Racewerks, please contact our sales team at (480) 966-3040.
