my aus spec vr4 runs normal accept for a little bit of white smoke, also liquid coming out of exhaust tip and very slowly out of the exhaust manifold(from manifold to turbo and also from manifold to head) this liquid has no smell and I'm guessing that its coolant. when I check the coolant it seems fine and is not low, also the oil is fine. Fuel economy is good and the only mods I have is 3 inch turbo back exhaust, I've had this problem for a while and recently changed the exhaust manifold gasket but it didnt do anything. Now I'm thinking that it could be the head gasket but not to sure. Any advice would be great.