Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

6.0 Air Intake Tube

Recommended Posts

I suspect going to a larger tube will not help, but here’s a relatively easy way to see. T in a vacuum gauge to a vacuum port behind the throttle body...most any port should do.  Run the line into the cab or rig something up so you can see the gauge while driving. If you go full throttle and the gauge drops to 0, there’s no restriction. Watch the gauge through the RPM sweep as more rpm will require more air. If you do see a restriction (I.e., vacuum showing > 0), it could also be the air filter. 

there may also be a MAP reading accessible through obd2, which would be easier to monitor, but I’m not sure. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.