Rob at www.fastlineturbo.co.uk is local to me at Northampton, and Google reviews seemed good, so I had him supply his recommendation of a strengthened IS38(not sure of the technicalities of exactly how its strengthened but he says it should be a lot more reliable and far better equipped to handle the stage 1 map than the factory turbo, of which apparantly the earlier (around 2016?) versions are worse and more prone to failure. Rob at fastline also offered whether I wanted a baffld delete for around £100, which apparantly let's things flow a little easier at the cost of a fraction more noise so I said sure. Apparantly my turbo shat its compressor wheel down into the downpipe, and he said its hard to say just how much damage done to the cat, hard to see down there, and best to replace that downpipe really, so I went for a scorpion downpipe with 100cell8 free flowing cat. Time will tell how long such a cat holds up, apparantly one of the main differences in aftermarket downpipes with cats is how much of the expensive precious metals they coat onto the cat, so cheaper ones might not get through the mot for as many years. Scorpion one is best 'bang for buck' according to vrs Northampton so I went for that (my first option the more expensive bcs had a 5 week lead time also whereas scorpion was in stock). So new stronger turbo and baffle delete (£875), scorpion downpipe (£650), while I was at it found a used ramair turbo inlet elbow which gives a little better airflow on ebay (£56) . I also bought a forge silicone intake pipe off ebay for another £55, but the garage didn't fit it, saying it was crap - too soft and squeezy so likely to collapse under boost. They said the forge one with the hose and turbo elbow all in one is fine if you can get that, but the shorter hose without elbow section is crap. So return that, and maybe I'll get the Apr carbon pipe. Garage labour was £580 + VAT, so I'm around £2300 down. With the improved airflow, the engine light hasn't come on so far, so the stage 1 map is fuelling enough for the moment, although it may well come on and push me to remap again, at which point I may as well throw caution to the wind and do r600 Intake, Wagner intercooler, and the rest of the exhaust system