01-04 Duramax LB7 4" RPI Diesel Stage 2 Intake

  • Sale
  • Regular price $394.99

This system is made for Stock MAF (Mass Air Flow Sensor) calibration. Meaning this system DOES NOT require Custom tuning to calibrate the MAF sensor.

This is our full metal 4" Cold Air Intake system for 01-04.5 LB7 Duramax, this system is full aluminum tubing from filter to turbo horn, comes with 4" to 3.5" silicone coupler to attach the intake tube to turbo horn.

**Click here to view available powder coating colors.**

You will have faster spool up, lower egt's, Noticeable Horsepower gain, some Mpg gain, and a turbo whistle that will make people look when your going through town!

Has a bolt in heat shield that is vary well sealed to keep underhood temps away from the air filter, it provides a fresh cold air supply straight to the filter for lower egt's and better performance. It is normal to see 150-250 deg drop in egt's with this system.

Comes with S&B Oiled Filter or AEM DRY Flow Filter

These are Custom built to order,  so it take 2-3 weeks normally to ship out, depending on how many orders we are working on building. 

Has RPI Logo on top of heat shield lid, we can do Custom lids that say: LB7, 6.6, or other options.



Ask a Question
  • If I buy the 5” intake, and the 3.5” intake horn, is there anything else I need to install them? (Boots, clamps, etc)

    Nothing else is needed, everything is included.

  • Is there a way I can just buy the connecting rubber. Turbo horn to intake ?

    Yes I think so, call or text Pete at 715-768-0698

  • Can you ship to canada B.C thnx

    Yes we ship to Canada, it will charge shipping though the website for Canada Shipping. Thanks!

  • Would you guys powder coat Granny Smith green?

    Hello, yes we can do any color. We just charge a little extra to cover the cost of the custom powder color, normally this cost is $15-$20 Just call us at 715-768-0698

  • Which system would be best , i have a 3.5” turbo horn on my truck now. Would 4” or 5” be best. Looking for loud turbo whistle but no efi live

    I would say the 4" would be the best choice.