Evolution Racewerks Competition Series 4" Brush Finish Race DownPipe Alfa Romeo Giulia | Stelvio 2.0L 2016+

AR-EXH001S

Introducing our new Competition Series 4" Downpipes for your 2.0L Engine 2016+ Giulia (952) and 2017+ Stelvio (949)!

Our Competition Series Catless Downpipes is constructed out of 100% 304 grade stainless steel, even down to the included hardware. Utilizing mandrel bent tubing, each downpipe is 100% TIG welded by our in house fabricators and built in the USA. The factory wastegate outlet utilizes a V-Band flange which we have duplicated and CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods. The O2 sensor is positioned at the factory location.

The factory turbocharger outlet has an iregular oval outlet as well as a very tight first turn. Reducing backpressure right at the turbocharger outlet is very critical for reducing turbocharger lag and a faster spoil up of the turbocharger. Due to the tight first bend, we felt we could not keep the correct shape to reduce restriction with regular tubing. Even the factory downpipe utilizes a formed piece instead of tubing. Thus, we decided to cast form stainless steel to produce the eact shape needed to maintain a smooth transition on the first turn. While this would dramatically increase development costs, we followed our company motto, "Performance, no Compromise" to offer you a much superior performance product.

Since the outlet of the turbocharger is around 4", we utilize 4" stainless steel tubing which using long transitions to reduce the size to 3" to match up with our 3" Evolution Racewerks Mid Pipes (factory is 2.5"). These longer transitions allow the exhaust gas time to smoothly transition from the larger piping to the smaller. This also allows us to keep a true 3" size through to our Evolution Racewerks 3" Mid Pipes as the factory mid pipes are 2.5". Also, since we utilize a larger 4" pipe right after the turbocharger, turbo backpressure is significantly reduced. This results in less exhaust turbulence and backpressure which again improves throttle response and increase turbocharger spool times (less turbocharger lag).

Our downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsover. The downpipes will come by default in Brushed Finish. We also offer a Polished and Ceramic Thermal Coated Black Finish as an option.

Features:

• Higher Max Horsepower Power Curve
• Higher Intial Torque Curve. Torque curve hits faster, higher, and longer
• Better throttle response and faster turbo spool up times
• Cast stainless steel inlet for smooth transition from turbocharger to downpipe.
• Mandrel Bent 4" piping. Smooth transition to the exhaust system
• 100% Stainless Steel Construction
• 100% TIG welded for better quality welds
• High quality precision CNC machined flanges.
• Brush Finish (standard) or optional Polish Finish
• Available with high temperature Black Thermal Coating to reduce underhood temperatures
• Optional - Additional O2 sensor bung for wideband O2 sensors (comes with pre-installed plug)
• Optional EGT sensor bung for EGT gauges (comes with pre-installed plug)
• Compatible with the factory or aftermarket exhaust systems
• Track tested durability
• Includes all hardware for complete installation
• Limited Lifetime Warranty

Fitment: 2.0L Engine

• Alfa Romeo Giulia (952) 2016+
• Alfa Romeo Stelvio (949) 2017+