Dom1102,
I am sorry you are not happy with your quad conversion, it does look like the technician could have taken more care when fitting it, but I must say that there are many people that have expressed how pleased they are with the conversion (and quite a few from this forum), but I feel that I must explain some of the reasoning behind the design of the conversion to help answer some of the points you have raised.
The brief we were given was to offer a solution that would give customers a twin outlet design and that would direct smoke through both outlets. This had to be done without affecting the original exhaust system.
The conversion is just that. It is technically classed as a trim and the reason for this is to avoid any homologation and insurance issues that would arise from changing any part of the original exhaust system. The conversion does not affect the warranty of the vehicle and will not change the insurance rating as it is a trim and not a performance enhancing accessory. However, to be classed as a trim it needed to be seen as a separate section, not joined directly to the original exhaust. This is the main reason that we opted for the solution that mimics the original trims, where they are effectively mounted to the vehicles body, and not to the exhaust. Equally this required us to allow the original exhaust movement to avoid any issues with noise and vibration etc.
This is why the heat wrap is used between the original pipes and the bells of the conversion. The heat wrap is purely to avoid rattles between the trim and the original exhaust, and not to give a gas tight fit (the original trims are not gas tight). The original outlet was fixed to the bumper and the gauze originally used performed the same function, but it was decided not to use this, as it would mean the technician removing this from the original pipes (it is spot welded in place) and refitting it to the exhaust.
I note your comments regarding the plastic cable ties, we did consider metal clips, but were again worried about these rattling against the trim. With the heat wrap in place, the temperature is such that it falls well within the operating temperature of the plastic cable ties, and offers a solution without any chance of rattles.
One point that does concern me is that you state that the centre section of the conversion has not been fitted with the heat wrap, and while I am happy that the temperature seen in that section will not be high enough to do any damage, we did include a section of the wrap as a additional security measure, and that should have been fitted by the Dealer.
As for the cutting of the rear diffuser, this was the only option we had due to the fact that there are no twin outlet plastics in existence, and the tooling costs for having one made against the volume of parts required would not have made it possible.
I hope that having explained some of the points above, you can now understand why the conversion is the way it is.
I am very sorry that you feel so unhappy regarding the conversion, and would be happy to talk to you directly regarding the fitment. Please PM me with your contact details and I will be in touch.
Regards,
Richard.