www.piperexhausts.co.uk A quick video of a Piper exhaust (non resonated/straight through/no silencers) on a Mk5 1.9TDI Currently the vehicle still has the standard manifold, downpipe and catalytic converter in place. Immediate observation, vehicle feels faster, I believe this system causes less turbo lag, as noted by spool rate on my boost gauge. Noise can be audiable in a built up area and at lower speed but is not boomy or annoying at all especially on the motorway, just a distant grumble. I drove back 120 miles from the workshop after having this fitted and my ears weren't bleeding at all. The quality of the materiels and workmanship I think are top notch and the guys at Piper were very helpful throughout the whole process. Thoroughly recommended. uk-mkivs.net You can buy it here - www.piperexhausts.co.uk - and I suggest you do, very happy.
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