01-04 Duramax LB7 5" RPI Diesel Stage 1 Intake

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  • Regular price $299.99

This system is made for stock MAF (Mass Air Flow Sensor) calibration. Meaning this system works perfect with no check engine lights, no matter if your truck is stock, or highly modified. No EFI Live tuning Required.

This is our 5" Cold Air Intake system for 01-04.5 LB7 Duramax, this system uses a special reinforced silicone coupler that attachs the 5" aluminium intake tube to the turbo horn, this coupler has a provision for the mass air flow sensor so that is gets the correct air flow readings.

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.

We use the best filters on all our intake systems

These are Custom built to order,  so it takes 7-14 days 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

  • Is this a perfect for my lb7. Or is there a modification that would need to take place in order to accommodate intake..I would want the 5’’ intake etc what all would I need to install. 2003 Chevy 2500 hd 6.6

    Hello, yes this is a great choice, nothing is required for this intake to work properly. It comes with everything needed to install. You just need a 10mm socket and flat tip screwdriver and t20 tamper proof bit for removing your stock maf sensor screws. 

  • Do I need to buy the intake horn ?

    No it is not required, the 3.5" horn just increases air flow, and give a little more turbo whistle.

  • Is the intake tube and well the entire system legal in California? Will it pass ca smog emissions?

    We do not have a CARB sticker for our intakes, so if they look under the hood that could give you a hard time, some guys have just bought a CARB sticker on ebay and used that sticker to pass test

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