Popped down to sunny Leicester today and Cougar Store duly fitted my Cobra exhaust and Y pipe for me.
Early (70 mile) impressions are:-
Louder on start-up, as expected.
A little boomy around town at certain revs, but nothing bad.
Motorway work, a tad boomy at 60-70, but almost gone by 78-80.
A few trips to the redline show a little more eagerness to rev and a lovely sound above 5,000rpm.
The tyre noise on these is almost always still the loudest thing.
For £900 fitted you cannot go wrong. Great value.