i have a my00

right i have heard that porting the standard headers are as good as buying an upgrade
so question is do i have to have the heads ported to match up where the headers join
also whats the best advice to do with the up-pipe?
reason for asking am going to remove my headers and wrap them

cheers phil

 

I had my heads and manifold ported and flow-matched at Thwaites Developments, much improved spool up, well worth the money