Re: 2004 V8 6-speed
You are corretomoondo...
On this E55 the head exhaust ports are 40mm dia and the exhaust manifold inlets were 36mm dia .
I read on MBworld that one guy cut open the SS outer shell and measured the collector tube~ 1.5" dia...whoa!
The manifolds I replaced with (gallery) are 42mm inlets and 2.38" od collector.... That should help percentage wise...
BTW big Josh, cleared codes & went for a cruz in the hood today. Dang...I'm still shakin... Nice job Josh!
I'm goin out to a hotrod cruz-in 2nite and I just know someone is going to ask about the ECU work...
Send me a sticker to put on the top of the black plastic access cover...or I can just say I did it... Yeah that's the ticket...