As many of you know I've been having a few minor issues with the car in the last couple of months. There has been a bit of a flat spot, a very high pitched whistle, and an inconsistent idle. My mindset was starting to turn to the viewpoint of, another day, another peculiarity to deal with, but today after leaving work in Cheltenham I hooned over to Gloucester to see Forge. The high pitched whistle had me sensing I had a bit of an air leak, as under full load there was a piercing whistle which only abated when you lifted from the gas pedal. Stop starting in traffic was a tad jerky too which was a tell tale sign. My initial point of concern was the blanking cap provided by BSH for the catch can. I asked the guys at Forge to spec me up a kit (as I'd seen it done by someone else - possible on here). Forge supplied: 1) 22-19mm reducer hose (black) - Part no. S22-19B @ £6.50 + VAT 2) Blanking Plug 20mm - Part no. FMTB052K20 @ £4.73 + VAT 3) 2 x No.30 Hose clamps - Part no. FMHC2230 @ £1.29 + VAT (Each) I decided that as the hoses supplied by BSH to attach to the catch tank were also a bit weak (and possibly not oil resistant), I would also replace these with some new silicone hosing. I purchased: 1) A 1 metre length of 16mm Straight Silicone Hose (Black) - Part no. SH-16 @ £17 + VAT 2) 4 x No.25 Hose clamps - Part no. FMHC1725 @ £1.25 + VAT each TOTAL COST OF ALL PARTS: £41.19 (inc VAT) All in all the guys were very helpful getting me sorted with the appropriate parts, and ensuring everything fitted and matched. Had a quick look at the Twintercooler and Twintake bits whilst I was down there and look very interesting. I'm pleased to report the idle is now rock solid, the high pitched whistle is gone. The car is also much smoother to drive and feels far more consistent on boost. The intermittent flat spot I was experiencing feels far less noticeable which surprised me as I was expecting it to be purely heatsoak related. For those of you (like myself) who have purchased a BSH catch tank on the cheap group buy on Mk5 Golf GTi, these additions are money very well spent. To be honest I've not been that impressed by the BSH catch tank with respect to the outright quality of ancillary components it's supplied with. It's functional but certainly not exceptional. If I had my time again I'd buy the Forge one (take note if you are thinking of buying one). Many thanks to the guys at Forge who were engaging and incredibly helpful, it was interesting to have a chat with the some of the guys who stand by the break out area for a coffee and a tobacco fix too!! And one piece of good news, I had a chat with Kev(?) from Forge about getting a replacement silicone remote location pipe for the DV (mine compresses with heat). They are looking at the tooling costs to see if this is a viable option for the Ed30/Cupra/S3, so watch this space.