Whats the hype about HSP? Well there intake system has full metal tube that is 4" for maximum flow and being metal you get a awesome turbo whistle from this system, and a power gain you can feel! They use the S&B Filter for best filtration! And they have high quality powder coating that holds up very well and looks great! Many colors to choose from also!
So try one out and see what the hype is all about!
01-04.5 Duramax LB7
HSP Cold Air Intake will improve horsepower, torque, and fuel economy.
Increases will vary dependant upon vehicle, current modifications, and tuning.
S&B Oiled Filter
Your choice of color, be sure to note the color you desire in the Special Instructions at checkout.
QUESTIONS & ANSWERSAsk a Question
This being a 4" does it require efi tune ? What is the advantage for a 5" bs a 4"
The 4" does not require EFI Live tuning, the 5" would normally. The 5" is mostly for looks or high HP trucks