2 BAR on a T04E - check your compressor map as I think you'll be WELL outside your turbo's efficiency area!
38mm tbh will be fine seeing as its a 2 litre car you running as its only produces a certain amount of exhaust gas and this is based on egine diplacement! - my Scoob has a 38mm EWG on a 2.35 and the EWG can cope fine with +/- 490bhp! BUT THIS SCOOB INFO MAY NOT WORK ON A PULSAR (Rob tells me the Scoob is nothing more than a tractor................tractor last forever though
Take a look at a 450 bhp "internally gated" turbo some time and you'll see the wastegate for it will only be around about 30mm
Russell