Originally Posted by
EcosseGP
Exhaust I think is a bit hit n miss noise wise if you're having a custom system built. The one on my blue S I thought was quieter than the original inside the car but had a wee rumble outside it.
Single back box will certainly be louder ... not too sure about pops n bangs.
The smaller pulley will make no difference to the noise ... but a different air box or filter would. I'll post the spec on mine after the weekend which has an addictive if a little loud exhaust note :)
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