So you don't rate any custom exhaust company other than pipewerx.... right!
And FYI all longlife exhausts come with a life time guarantee so why did you not just pop back to get it sorted?
In reply to the OP I had a long life system years ago. I never had any problems with it at all. But as said there are a lot of companies out there doing better work for better prices. I have a Prospeed system on mine now.
pipewerx are very good, however the only time i would go custom would be for a car that you cant get an exhaust for. like a 20vT BAM engined MK2 golf a mate had. apart from that i wouldnt recommend custom really,LL or powerflow especially.
i cant speak for prospeed because i have never seen one of their exhausts.
*note*
alot of custom exhaust places weld using metal inert gas welding. this is wrong because you should never weld dissimilar metals, especially metal with a high carbon content or materials high up on the electromotive series. because they weld in this manner the welds corrode and the exhaust ends up falling off the car either due to electrolytic corrosion between the dissimilar metals or the poor quality welding oxydising and the welds corroding.
the manufacturers of off the shelf exhaust systems invest ££££ in research and development and using coded welders.
the proper method is tungsten inert gas welding which is more expensive, hence why custom exhaust places only MIG weld. well, that and more skill is required when TIG welding.
oh and in case you know where i got this from im a class 2 coded welded / ASMA 9 code.
id also like to see how these custom exhaust places are applying fluid dynamics in the aid of designing their systems to get more power out of a vehicle.
when have you seen a custom exhaust place working out friction factors of grade 304 stainless? or one of them working out whether the flow through a certain part of an exhaust system is laminar / transitional / turbulent?
exactly.
