ive got a no brand wastegate which came with my td04 kit and im guessing its from ebay as it has no brand name, it has a 0.4 bar spring as thats the pressure reading i get from my boost gauge. was wondering if i can replace the spring with a different one from ebay and will it work with the wastegate i have. I have a MBC but its absolutely crap as when the boost starts to kick in, it over boosts and hits the factory limit, and when i accelerate very slow it only increases the boost to about 0.5 bar.