2011-2016 Duramax LML Max Air Flow Bundle Y Bridge Kit - HSP Diesel
***These do carry a lead time!! 3 weeks on average***
What Is the Max Air Flow Bundle for the LML Duramax?
This bundle includes the core HSP components responsible for freeing up restrictions in the stock system. It replaces parts that commonly bottleneck performance and wraps them into a single discounted package for added value.
Hot Side Intercooler Pipe
The HSP Hot Side Tube is upgraded to 3" mandrel-bent aluminum for up to 40% more flow and greatly reduced turbulence. It's a durable and visually appealing replacement for the failure-prone stock unit.
Max Flow Bridge and Cold Side Tube
The two-piece CNC-machined Max Flow Bridge is built for a boost-tight seal and easy installation. It's paired with the HSP Cold Side Tube for optimized airflow through the charge system.
VGT Intake Mouthpiece
Handmade with larger diameter bends and an O-ring seal, this intake mouthpiece improves turbo response and prevents air leaks—making it a key component of the overall performance system.
Cold Air Intake
This intake system includes a 4.5" mandrel-bent tube, HSP's open heat shield box, and a high-flow filter. It contributes up to 20 additional horsepower and helps reduce intake temps—where every degree matters.
Passenger Side Up-Pipe
Constructed from heavy-wall 304 stainless steel with sleeved bellows, this high-flow up-pipe improves spool-up and durability compared to the restrictive factory design.
Overview:
- Increased performance and throttle response
- High-flow Cold Air Intake system
- 3" mandrel-bent hot and cold side tubes
- Heavy-duty stainless steel up-pipe
- Precision CNC-machined Max Flow Bridge
- Handmade, O-ring-sealed components
- Powder coat finish options available

