Should I run open or closed exhaust? I am going racing on Wed. the 9th at Muncie Drag Way and was wanting to pull my best times. I use dynomax shorties with 1 5/8 primarys and 2 1/2 collectors.

Thanks

-Terry-

Open is always better. Don't listen to people who say you need backpressure, thats crap. What you need is velocity and scavenging, but open headers will be better than full exhaust for sure!

Read Ed's post in this thread. It explains a lot.

https://www.thirdgen.org/techbb2/sho...t=backpressure