EGR Limiting...
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Lead Driver
Joined: Sep 2002
Posts: 9,498
Likes: 2,020
From: North Texas
EGR Limiting...
Well seeing as how our EGR valve screws onto the pipe from either the intake or the manifold...limiting the EGR flow into the manifold will reduce intake temps, carbon buildup, and give better off idle throttle response.
I recently modified the EGR setup on my Z71 and those points I listed above have happened...I even have unbias sources drive my truck each time I do something to it to get a good answer. The new Chevy ones are easy to fix as you only need a restrictor plate not a fitting.
http://www.s10planet.com/tech_egr.htm
About mid way down there is a pic of that restrictor fitting. How hard would it be to locate a fitting like the one shown there? Basically something with a narrow ID?
Thanks and let me know what you guys think.
I recently modified the EGR setup on my Z71 and those points I listed above have happened...I even have unbias sources drive my truck each time I do something to it to get a good answer. The new Chevy ones are easy to fix as you only need a restrictor plate not a fitting.
http://www.s10planet.com/tech_egr.htm
About mid way down there is a pic of that restrictor fitting. How hard would it be to locate a fitting like the one shown there? Basically something with a narrow ID?
Thanks and let me know what you guys think.
Posting Guru
Joined: Mar 2003
Posts: 1,349
Likes: 3
From: Cloud USA
EGR Limiting...
EGR's on newer cars and trucks shouldnt hurt performance. They can actually increase fuel economy and reduce combustion temps. It cools or slows the burn so the computer can advance ignition timing to increase efficiency.
Thread Starter
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Lead Driver
Joined: Sep 2002
Posts: 9,498
Likes: 2,020
From: North Texas
EGR Limiting...
I picked up about .5 MPG by doing this on my GM...I limited the flow to 5/32" from well over 1/2" of EGR gas. Also...GM ditched EGR in '02 and newer vehicles, that's gotta say something.
Looks like I need to just begin searching for that restrictor fitting and when I get it all together I will post up my results if any.
Looks like I need to just begin searching for that restrictor fitting and when I get it all together I will post up my results if any.
