Just fitted a cusco decat downpipe and my cat back is now to loud :'(
Couple of questions

Can anyone recommend me a quieter but ,still free flowing 3" cat back (good for 450 ish) ?

The cat back is very well made (tig weld ****) but i refuse to run around with the bung in :-D
so How much is my 3" 5zigen slip jointed, jasma cat back worth ?

cheers clive

 

Unsure on price of yours but I've just fitted a 3" mongoose system to my classic, very quiet in comparison to the japspeed I had.

 

Thanks fella
I had been looking at the cobra "track day friendly" system but at just under £400 it's a bit over my budget
I've only got a couple of pics of the 5zigen before I re fitted it last year after my engine build .
here's one and I'll try to dig out the others (if that helps with valuing)

 

Revolution is about the quietest you'll find.

 

What's the Revolution system? As in Revolution motorsport?

Cheers

 

This^^

Mine is the above system, in 3" with full de cat and no resonators. It measures 93db at 4500 rpm at the track.

 

Thanks for the input fellas

Had a look at the revolutions and it looks like they have a flat flange at the downpipe end . I need a cat back suitable for the fire ring type downpipe , as I don't really want to change the divorced wastegate cusco downpipe

 

They come with the flange you need. It's sleeve jointed to match upto their down pipe.