Though the construction of our downpipes and cat-backs remain the same, we can discuss one feature unique to our 1.8T 3" turbo-back systems - power gains. In our extensive testing we were able to dyno test a 'typical' mk4 and measure the changes. We used a relatively stock 2002 GTI 337 edition. The car was chipped, had a cold air intake, and an aftermarket diverter valve. No other engine modifications were made to the car. Equipped with stock exhaust, we drove the car thoroughly and dyno tested it. The stock exhaust was swapped out for our 3" turbo-back system and the car was driven to adapt then dyno tested again. With weather conditions literally exact we measured peak gains of 22.5 hp and 48 lb/ft to the wheels! Power gains were felt all over. Boost was built faster and held out longer with the stock turbocharger. No power losses were felt at any point in the powerband. To view a full size, un-altered dyno sheet click here: mk4 1.8T dyno chart

Our 3" turbo-back exhaust systems are available in street and race configurations with 6 unique tip configurations. Pricing starts at $705 and depends on series and tip fitment.

Construction

CNC mandrel bent 14 gauge aluminized steel tubing

CNC machined 3/8" steel flanges

100% TIG welded construction

Stainless steel braided flex section

Magnaflow resonator, muffler, & high flow catalytic converter (street series)

Adjustable flanges allow for precise fitment on every vehicle

Modular construction allows for simple changes between street and race series

Fitment

Fits 1999-2005 VW mk4 Golf, Jetta, GTI 1.8T

Available in street or race configuration

4 triple layer gaskets & OEM K03 gasket included

5/16" corrosion resistant hardware included

Have any additional questions? Please E-mail us at info@sms-performance.com.

DUE TO HIGH VOLUME ORDERS 42DRAFT DESIGNS HAS A 15 DAY WAIT PERIOD TO SHIP. ALL EXHAUST SYSTEMS ARE MADE TO YOUR SPECIFIC ORDER. ONCE PURCHASED YOU WILL BE NOTIFIED AND SUPPLIED WITH THE TRACKING INFORMATION. THIS ITEM HAS FREE SHIPPING. THIS ITEM HAS FREE SHIPPING.THIS ITEM HAS FREE SHIPPING.