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Discussion Starter · #1 ·
I’ve done plenty of research and read many forums but everything seems outdated and I wonder if old issues have been fixed. I’ve heard the Plm headers leak/hiss, Dc headers break this test pipe/hiss, and I haven’t heard great things about the rest. Does anyone have a good suggestion? Preferablly something that you’ve had for a while and has been reliable but given power gains
 

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Discussion Starter · #3 ·
As far as headers hissing/ratting goes, I got my TSX with DC headers put on already by the previous owners (also a test pipe, but I added back a Magnaflow high-flow cat because as a motorcyclist/bicyclist as well, I am all for emissions filtering).

They made that "rattling hiss on throttle" sound, which was solved by using a double braided flex pipe instead of the one that the headers came with.

In fact, I believe I came to that solution via posting to this very forum - here it is!


For me, the flex pipe that has worked well are from Vibrant: the VPE-62606 was initially indicated for use with the stock cat converter (or perhaps, urk, the test pipe...); but to work with the Magnaflow cat converter I have, I eventually had to upsize slightly to the VPE-62608 to fit better (while the 62606 did work with it to solve the rattle/hiss, it was very tight and stressed a different exhaust gasket that leaked after a while, and everything fit much better with the slightly larger size).
Hey man thank you so much for the great response! Quick question, are you suggesting that I buy the threaded test pipe to replace the shitty Dc one and get it welded? Will this remove the hiss or is it only because your running an after market high flow Cat
 
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