EL vs. UEL Headers Info w/ Video
 

[URL="http://www.comeanddriveit.com/engine/equal-vs-unequal-length-exhaust-manifolds"]Equal vs. Unequal Length Headers Info
[/URL]

The sound recording part at the bottom is interesting. Essentially it's a plot of pressure measured off the rear bumper between an OEM header and a EL Killer B header. You can see the difference in sound waves pretty clearly.

EL

[ame]https://www.youtube.com/watch?v=hoEoVyy4PW4[/ame]

UEL

[ame]https://www.youtube.com/watch?v=5sjbuqCkz24[/ame]

Yup. I gladly gave up the "rumble" for quicker spool and more power.