whats the difference in the header all the way back to the muffler in a k20z1 from that of a dc5r? I heard somewhere its all the same except for the muffler is different some how. Also would it be worth the money to invest in a dc5r header back exhaust?

 

The B-pipe is identical, the muffler is different on the Z1 and does not have the bypass valve in it.

 

header is also different

 

bypass valve = ???

and whats the difference in the headers?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VBPType-S &raquo;</TD></TR><TR><TD CLASS="quote">bypass valve = ???

and whats the difference in the headers? </TD></TR></TABLE>

The bypass valve on the -R muffler is a spring-loaded flap that opens up from the "in" pipe and skips a baffle chamber completely. It works solely on exhaust pressure, and will open on its own if you floor the gas.

ITR header is a 4-2-1 design.

 

awesome thanks!