zgeezer Posted March 29, 2008 Share Posted March 29, 2008 I'm swapping a 5.3 into my 240. The first 8 inches or so of the exhaust down pipe is filled with a screen. This is just before the O2 sensor. Any one know what the purpose of this screen might be? Is it designed to straighten the air flow, similar to the screen in many MAF's? Take a look. If I retain this screen, is resonance likely to be reduced? It sure can't do much for power, but I figure that GM has something in mind when they designed it. g Quote Link to comment Share on other sites More sharing options...
getZ Posted March 29, 2008 Share Posted March 29, 2008 looks like a catalytic convertor to me Quote Link to comment Share on other sites More sharing options...
rdsk8ter Posted April 1, 2008 Share Posted April 1, 2008 Run like hell you found the matrix man lol I believe the purpose of this is to stur the exhaust a little befor the o2 sensor. If I remember right they decided the o2 might read better if the airflow is broken up a little. Just my .02 might not be worth anything but its a shot Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.