pf85 Posted January 12, 2022 Share Posted January 12, 2022 Apexi do ECV's with the main purpose to quieten down exhausts by fitting them inline in the exhaust pipe. Out of curiosity has anyone used them for the opposite purpose - using it as a manual bypass when you want to make the exhaust louder? It would require fabrication to effectively make it into a short Y pipe. https://www.nengun.com/apexi/exhaust-control-valve Link to comment Share on other sites More sharing options...
raddys Posted January 13, 2022 Share Posted January 13, 2022 Yes my old tanabe had exactly this, it was connected up to a boost line so when I hit a certain level of boost it would open up making it straight pipe 2 Link to comment Share on other sites More sharing options...
pf85 Posted January 13, 2022 Author Share Posted January 13, 2022 I have a HKS 60mm GT wastegate screemer pipe so it is quite loud on full boost but I'd like the ability or option of increasing the idle or cruising noise on demand from time to time. Link to comment Share on other sites More sharing options...
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