Well guys managed to hit my target of 500hpSo what’s changed? As you know my s200v has been put up for sale to make way for unique turbo.EFR7670 with S300v housingits a watercooled roller bearing turbo with really nice wheels -CW:76/57TW: 70/61, gamma-Ti alloy, lower density (and thus inertia) than conventional Inconel alloysThanks to Ruben for all his work on the turbo top job.I've been driving for approx a month tuning it and trying to get it right for a power run. Its been task to balance spool Vs surge - for example more spool is possible but then get surge so the short term workaround is to run less boost. Long term would be to leak off some air via ECU controlled valve.So yes it does have lag but it still have same torque as a stock 3.0tdi @ 2.2k in its current form.DynoWe turned up on a BMW daySmoke test Video:(captured by Jay)The turbo is really a monster and still has more scope, but I'm out of fuel. I guess with larger injectors 550hp would be on the cards.EGT's - 900degStock engine (apart from valvesprings)Stock exhaust apart from downpipeStock gearboxNo smokeCheersBobby