Nice to know Andy.
Is there any difference between the QV and 2.0JTDm backboxes then, apart from the exhaust tip diameter?
And is there anything wrong with using a used Diesel box on a petrol model?
I put a QV box on a 1.6JTDm & a 2.0JTDm box on a 1.4tb! No it doesn't - the diesel box won't be choked up with soot though! The QV box has the left and right hand outlets coming out at the rear of the sides of the box whereas the diesels are staggered. As a rough guide at max revs 5000 x2litres = 10,000 litres per minute, 6500x1.75litres=11375 litres per minute whereas with the 1.4, 6500x1.4=9100litres per minute so neither is designed for less gas flow than what you have already.
As far as I am aware the exhaust tips are the same size on all Giuliettas, certainly on all the ones I've had. It's only on the most recent ones that the tip has changed. You can buy the oversize exhaust tips (at £233) but they are steep for a pair of bolt on finishers. You would probably be better off talking to an exhaust fitter & getting them to fit a pair of there's on.
146 1.6TS, 156 2.0TS, 156 1.8TS, 147 1.6TS, 147 2.0TS, 159 1.9JTS, 147 1.6TS, 159 1.9JTDm, Mito 1.4, GT, Giulietta 2.0JTDm, Giulietta 1.4tb, Giulietta 1.6JTDm, Giulietta Cloverleaf........