Basically you want to flush coolant and oil system when you change. I'm sure you need to change thermostat as well as you won't get all the coolant out. It is basically to stop blockages and killing the turbo.
So today I brought a second hand forge 007p dump valve for 32 pounds a bargain just need to get a new yellow spring for it currently has a green one which is no good for higher boost
Going to fit a bigger turbo got the turbo Saab red injectors and a bigger manifold and a front mount intercooler has anyone got any experience or advice hoping for around 250 bhp which is more than enough for a front wheel drive
Got a remapped 1.8t running 190bhp got a green spring and yellow spring put the yellow spring in a feels very hard to push down I know the green spring is standard boost
