That number i said was referring to a tune with power supporting modsCatless exhaust 30-40HP???? No way. On my other turbo car with a vacuum wastegate, the only reason the HP will increase with a larger/less restrictive exhaust is that the boost will rise considerably, but have retained the factory exhaust/main cat and installed a MBC and raised 89HP. Now on the 2.0T the boost is controlled electronically with the ecu.
With the intercooler, although not much of a instant increase with the stock system, when modified, the cooler air charge will result in additional power gains.