Competition Turbo Muffler 2.25" - 2.25" Offset Inlet, 2.25" Center Outlet Infiniti The difference is the MAF

The difference is the MAF housing being bigger at 75mm diameter and therefore allowing for more air volume

Accelerometer/Gyroscope

If you have any aftermarket header

This PLM axle-back exhaust is designed with the Helmholtz Resonators

Gates Water Pumps are recognized in the industry for their durability and superior quality

Competition Turbo Muffler 2.25" - 2.25" Offset Inlet, 2.25" Center Outlet Infiniti The difference is the MAFCompetition Turbo Mufflers utilize a low back pressure baffle network designed to flow in either direction resulting in better performance and economy. Features: Improved Engine Efficiency Results in Better Performance and Economy 4 1 4"H x 9 3 4"W x 13"L Oval Shaped Double Wrapped Aluminized Steel Construction for Longer Life Throaty Exhaust Sound on Acceleration with Quiet Operation at Idle and Cruising Speeds Compact Muffler Design Flows in Either