A definate Nono! I bet your dyno print out is very optimistic! They have been giving out readings well above what people have been expected to achieve. A standard 182 come out at 177bhp and after a remap and milltek exhaust he then got 192bhp. My mate took his fiesta st there for a full milltek and that come back at 182bhp when it was standard and 181bhp after the work done :| - Something not right there..
I wouldnt use these! Even for fitting as they have been know to keep people exhausts after fitting performance ones, not using gaskets, and not pasting up the exhaust. Other than that they are extremley customer friendly. People may have other views about amd but this is mine...and a few others. I dont know what there like when it comes to fitting coilover etc...but when it comes to exhausts ^^
Oh just another thing i thought i aught to mention...if you ever get any work done there...after fitting they take the car on a test drive and absolutly 'rag' the car so see how the car performs after any work done. If you dont mind that then its okay, but if you do, then stay away. I never even knew they done this after someone who use to work there told me :\