Available options to silence Peco (Cybox) exhaust

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Available options to silence Peco (Cybox) exhaust

Postby HJ2 » Fri 19.05.2017, 10:50

Dear all,

I just bought a house with a garage in a rather friendly neighbourhood / community.
As a 'gift' to the new neighbours, I would like to silence my Peco exhaust a bit.

Does anyone has some experience with this and know what options are available?
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Re: Available options to silence Peco (Cybox) exhaust

Postby GeoffSmith » Fri 19.05.2017, 11:39

GBP1:

Image

GBP78:

PNMS9002ES
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Re: Available options to silence Peco (Cybox) exhaust

Postby HJ2 » Fri 19.05.2017, 13:18

;-)

But will it fit with the standard 2.25" peco system?
(Not the earbuds, duh!) :lol:
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Re: Available options to silence Peco (Cybox) exhaust

Postby GeoffSmith » Fri 19.05.2017, 13:50

Yep. Fitted one on mine a couple of years ago. To be honest, I don't think it made too much difference to the neighbours but now it's sooted up it takes the edge of the booming at high speed.
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Re: Available options to silence Peco (Cybox) exhaust

Postby HJ2 » Fri 19.05.2017, 14:08

Then that's even better as the boom is annoying :evil:
I'll order straight away! Any LEC Discount?

(Hmmzz.. Now I need to order an uprated oil cooler as well to compensate for the loss in power :lol: )
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Re: Available options to silence Peco (Cybox) exhaust

Postby John_W » Fri 19.05.2017, 15:51

Another option is to get your local exhaust fabricator to insert an additional silencer in the "up" bit of the exhaust in the right wheel arch, just ahead of the wheel. The attached photo should show the position.

I have been running with this arrangement (2 1/4" stainless exhaust) for over ten years. It is still not as quiet as the standard system, despite the fact that I had the additional silencer replaced by a larger version last year before a long european trip (3,500 miles) to reduce the booming.

The attached picture is from 2005 during the initial fitting, and shows a cylindrical silencer. The current additional silencer is oval in cross-section and larger (but I don't have a picture of it).

John
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Re: Available options to silence Peco (Cybox) exhaust

Postby John_W » Fri 19.05.2017, 15:53

Whoops - double post. :oops:
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Re: Available options to silence Peco (Cybox) exhaust

Postby HJ2 » Fri 19.05.2017, 16:54

The thing is... I don't trust these local Guy's. I'd rather buy something that I can install myself :wink:
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Re: Available options to silence Peco (Cybox) exhaust

Postby lolaman » Fri 19.05.2017, 17:32

I have bought one of these as an additional silencer for the stringent noise limits at Castle Combe next weekend.
https://www.merlinmotorsport.co.uk/s/ex ... d-mufflers
Click on the third illustration.
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Re: Available options to silence Peco (Cybox) exhaust

Postby alan e » Fri 19.05.2017, 20:44

PNM do a extra box for the peco exhaust I have fitted one to my system.
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Re: Available options to silence Peco (Cybox) exhaust

Postby HJ2 » Sat 20.05.2017, 08:50

Top tips!

And what are your experiences with an additional silencer? Was it worth it? :mrgreen:
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Re: Available options to silence Peco (Cybox) exhaust

Postby alan e » Sat 20.05.2017, 10:32

GeoffSmith wrote:Yep. Fitted one on mine a couple of years ago. To be honest, I don't think it made too much difference to the neighbours but now it's sooted up it takes the edge of the booming at high speed.

:agree:
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Re: Available options to silence Peco (Cybox) exhaust

Postby John_W » Sat 20.05.2017, 13:06

It was worth it, but I'd like it quieter.

When driving, my current system is noticably quieter than a big bore straight-through stainless steel system without the extra silencer, and the "droning" noise (which I found wearing on a journey) is almost gone. However, idling is not as quiet as I would like. You definitely know the engine is running.

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Re: Available options to silence Peco (Cybox) exhaust

Postby HJ2 » Sat 20.05.2017, 13:11

that sounds perfect then!
I also thought of replacing the front rubber hanger (is this the correct term) for a softer one, as I believe that most of the droning comes from here
Any opinions on this, or a link to a supplier for softer hangers? The rear hanger cannot flex so much for a reason, but I think it is viable to replace the front...
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Re: Available options to silence Peco (Cybox) exhaust

Postby Graaf » Sun 21.05.2017, 15:17

I fitted the PNM (Peco) to my Elan and it sounds fine. Nowhere near as loud as the larine was on my Elise and I thought that that was relatively quiet. I'd be surprised if it upset the neighbours.
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Re: Available options to silence Peco (Cybox) exhaust

Postby HJ2 » Sun 21.05.2017, 15:26

Then perhaps you still have the OEM downpipe and the pre-cat still in position?
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Re: Available options to silence Peco (Cybox) exhaust

Postby Graaf » Sun 21.05.2017, 19:59

HJ2 wrote:Then perhaps you still have the OEM downpipe and the pre-cat still in position?


Ah, yes!
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