i'm wanting to port the wastegate on my stock turbo on my glanza due to boost creep, i'm a bit short on funds so was going to do it with a dremel and see how well it works, i've read about people doing this with the turbo still on the car how easy is it to do? will i need to replace the cat-turbo gasket? i've also heard of people porting the part from where it sits to the manifold going into the exhaust side of the turbo is this nececary? help would be appreciated cheers