Hi just bought a MY99 not so long ago and its got a Blitz Nur Spec back box on it With quite a large end pipe. Not really to my taste to be honest but sounds really nice. I'm after a smaller bore Hayward and Scott back box mated to a decat centre in replacement. Will there be any noticeable power difference between the two back boxes? And sounds from the Hayward will i get more of that flat four burble than the Nur Spec which is a bit droney on long journeys.

Cheers!

 

Not sure about the power aspect depends on your system at the mo ie decat down/center and bore size but a H&S will defo be quieter than a Blitz