View Single Post
Old 05-27-2009, 02:30 PM   #41
*** Banned ***
Member#: 85813
Join Date: Apr 2005
Chapter/Region: South East
Location: Myrtle Beach, SC
2002 E46 M3
2006 RC51


Originally Posted by oscarmayer View Post
boxter rumble comes from the firing order. i have an equil length and have the rumble.
Then you aren't truely equal length. Firing order is not the same as when the exhaust pulses hit the turbo.

In UEL headers the pulses are all staggered out hence the burble. In EL headers the pulses are all in line and in sequence. Think blowing a fan steady vs blow in hesitant pulses.
* Registered users of the site do not see these ads.
CoolRex is offline   Reply With Quote