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Looking for Secondary Muffler

mcgc0

PCGB Member
Need to replace my secondary muffler (the R/H rear silencer box the tail pipe connects to). The internal baffles seem to have broken down and at idle it sounds like Michael Flatley's inside there giving it some.

I have a cup pipe fitted so an alternative G pipe just won't pass any noise test unfortunately. Does anyone have a muffler left over from a G pipe conversion they want to unload?

Cheers, Marcus.
 
Can't help with your search for one Marcus but it's well known that a cup pipe can lead to the secondary breaking down. So it sounds like that's what has happened to yours.
 
Thanks Steve. Not heard of that one before. Wonder if this breakdown is over many years and/or a given. Worse case I guess is to do this the other way round - fit a primary followed by a G pipe...
 
Yes it takes a while but almost all of the cases I've heard of the secondary breaking down is when they had a cup pipe fitted. So if you put a secondary on it's not going to happen straight away. Going for a standard primary and a G Pipe is indeed your other option if you can't find a secondary.
 
Cheers Steve,

If I can source a relatively cheap used secondary silencer I'll go for that and see how long that lasts for. Think I have a G pipe around somewhere and may just pick up a cheap primary silencer too just to have both as a plan B option.

M
 
Does any of this liberate more power?

I was toying with a G-Pipe the other year but apparently it doesn't give a power boost, so I lost interest. The noise is a bonus, but I'm not an all mouth & no trousers kinda guy [;)]
 
It's my understanding Colin that using a G pipe with a primary muffler is really zero to negligible in terms of direct power increase. More likely the saving in secondary muffler weight (and it is a heavy item) is the greater improvement gain. A cup pipe though is supposed to have its origins of a small performance gain (in it being essentially a straight thru pipe) when compared to the primary muffler mass and internal baffle volume it replaces. I guess when combined again with a de-cat, then we're leaning on the right side of more. I am tempted though with now just doing the G pipe thing as well and loosing the rattling secondary muffler altogether. My personal interest has been loosing weight over nice noise, but I know you can't have one without the other in this case.

Questions is, how much can I bear driving with a de-cat, cup pipe, G pipe and nothing in between...
 

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