to be fair, if it wasnt for it setting the engine light off
id probably say buy one, terrible customer service aside it is a nice exhuast, sounds and goes well. I think we paid about £450 for ours did we not, i had no charge for fitting.
saw kez's R with the first piper exhuast on yest, as i followed him through leeds city centre it sounds identical and is only slightly different in tail pipe design