The Alpha GT-R 90mm DP are the most capable and durable turbochargers on the market. During testing, the shop GT-R equipped with Alpha’s upgraded turbos saw powerband gains of 100 horsepower and over 130 ft lbs of torque with this simple bolt-on! Turbo spool-up was also improved by nearly 400 RPM. AMS DPs perform better and are not prone to cracking like competitive alternatives. By casting these parts in tough 304 stainless steel, the design constraints of a hand-built build were avoided. The AMS engineering team used Solidworks to design the inlet and outlet with smoother features and geometry to optimize exhaust flow.

They also provided thick flanges to prevent exhaust leaks and use factory mounting hardware for OEM-style fitment. Most other systems use 3" (76mm) downpipes which can cause unnecessary backpressure. By using a larger 3.5" (90mm) downpipe, we were able to optimize exhaust flow, freeing up horsepower while improving throttle response and reaction time.

CHARACTERISTIC :
-Cast iron exhaust pipes without conduit (set of 2)
-Significant increase in power across the entire power range
-Cast iron construction provides increased performance and reliability over the competition
-Pronounced, guttural exhaust note at full throttle, but muted at idle and cruising speed.
-Large 90mm (3.5") primary section for optimum exhaust flow.
-Connects to stock center pipe or most aftermarket systems.

BOX CONTENTS:
-Two DP 90mm Alpha Cast
-Downpipe mounting hardware

**ALL AMS PRODUCTS ARE DESIGNED FOR OFF-ROAD USE ONLY**