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robsco

Original Poster:

5,723 posts

61 months

[news] 
Sunday 30th September 2012 quote quote all
Is this viable? My old Cerb made a noise that would wake the dead, and an unholy overrun. The Tuscan is at the moment decatted with standard cans, and there's not enough volume. Pops and bangs are at too much of a premium too as it stands. That said, despite the laugh-out-loud hooliganism of a ridiculously noisy exhaust set-up, sometimes it's nice to settle down for a bit. Leading to the question... Has anybody on here tried this? Is it a possibility or are there factors to displace the theory?

B3NNL

762 posts

53 months

[news] 
Monday 1st October 2012 quote quote all
I have just decatted mine and I also have the HUGE ACT larger bore end cans, it is bloody mental and sounds like the end of the world. Measured 108Db (normal running was 104, bangs took it upto 108)
Chucked on the standard end cans and brought the noise right back down to a manageable 100Db with less angry bangs and pops.
So to answer your question, yes it is possible to have a fairly easy fix to cut down noise if required.

m4tti

1,676 posts

40 months

[news] 
Monday 1st October 2012 quote quote all
B3NNL said:
I have just decatted mine and I also have the HUGE ACT larger bore end cans, it is bloody mental and sounds like the end of the world. Measured 108Db (normal running was 104, bangs took it upto 108)
Chucked on the standard end cans and brought the noise right back down to a manageable 100Db with less angry bangs and pops.
So to answer your question, yes it is possible to have a fairly easy fix to cut down noise if required.
What rpm were you at 108. I had mine checked the other day at brands hatch and it was bang on 105db at 4500 rpm.

B3NNL

762 posts

53 months

[news] 
Monday 1st October 2012 quote quote all
4500 for both

Cockey

1,173 posts

113 months

[news] 
Monday 1st October 2012 quote quote all
robsco said:
Is this viable? My old Cerb made a noise that would wake the dead, and an unholy overrun. The Tuscan is at the moment decatted with standard cans, and there's not enough volume. Pops and bangs are at too much of a premium too as it stands. That said, despite the laugh-out-loud hooliganism of a ridiculously noisy exhaust set-up, sometimes it's nice to settle down for a bit. Leading to the question... Has anybody on here tried this? Is it a possibility or are there factors to displace the theory?
Do you mean a switchable exhaust valve?

Bit like this: http://www.youtube.com/watch?v=VXB9D6_K0mg&fea...

http://www.youtube.com/watch?v=C6_56xneJJ8&fea...
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MrChips

1,953 posts

95 months

[news] 
Monday 1st October 2012 quote quote all
robsco said:
Is this viable? My old Cerb made a noise that would wake the dead, and an unholy overrun. The Tuscan is at the moment decatted with standard cans, and there's not enough volume. Pops and bangs are at too much of a premium too as it stands. That said, despite the laugh-out-loud hooliganism of a ridiculously noisy exhaust set-up, sometimes it's nice to settle down for a bit. Leading to the question... Has anybody on here tried this? Is it a possibility or are there factors to displace the theory?
Odd that you've posted this question as I was soon to post a review of some new exhaust cans that Powertech made up. I've just fitted these cans to me 4.3 decat and they do exactly what you're looking for.

They're 80% sleeved but with a small bit (5-8cm) of perforated pipe in the middle of the length. At lower rpm, they sound pretty much identical to me standard cans did. Low rumble.. but not noisy in the normal sense.
Give it some beans and once the revs get up above 3.5k, they take on a much much louder and totally different note... basically identical to this (from inside the car) http://www.youtube.com/watch?v=TSlkKO-ERD0

It's had more than a few people actually laughing at the difference from sounding like the devil himself when going for a fast drive, and then pootling through a town/village where it is so civil.

If you're coming on the tunnel run then keep an ear out or come and say hello!

m4tti

1,676 posts

40 months

[news] 
Monday 1st October 2012 quote quote all
B3NNL said:
4500 for both
Interesting. As far as I know mine is totally standard apart from sleeved cans but still doing 105 db. Would have thought the decat would have been much louder.

daveparry

972 posts

85 months

[news] 
Monday 1st October 2012 quote quote all
Try Ratsport.com diverters are less than £50 i believe!

Edited by daveparry on Tuesday 2nd October 19:37

so called

4,556 posts

94 months

[news] 
Tuesday 2nd October 2012 quote quote all
Mine is decaf and bigger bore as well.
Don't know how loud but it's LOUD.

This solution 'sounds' interesting.

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