i've searched for "usdm jdm dc" but didn't get any results.

what are the differences between jdm dc 4-1 header vs usdm dc 4-1 header? thanks!

 

jdm = 2.5"

usdm= 2"

 

so if the collecter was modified to a 2.5" it would be the same exact design?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xx dc2teg xx &raquo;</TD></TR><TR><TD CLASS="quote">jdm = 2.5"

usdm= 2"</TD></TR></TABLE>

I believe the usdm header is 2.25"

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Skunk2nR &raquo;</TD></TR><TR><TD CLASS="quote">

I believe the usdm header is 2.25"</TD></TR></TABLE>

DC, apex, greddy etc all mostly have 2.0" collectors,-- in fact there are very few 2.25" headers out there on the market if any at all.

 

anyone know if the design is the same, other then the collector size?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xx dc2teg xx &raquo;</TD></TR><TR><TD CLASS="quote">

DC, apex, greddy etc all mostly have 2.0" collectors,-- in fact there are very few 2.25" headers out there on the market if any at all.</TD></TR></TABLE>

hot damn. All this time, I thought my usdm DC header had a 2.25" collector.