Well bought a can of Wynnes EGR and turbo cleaner and sprayed it in inlet pipe to the turbo. Took my time nice and steady. Wow took it for a spin and the difference is very noticeable. Quieter, more powerful overall a lot lot better. I am pleasantly surprised but very happy with the outcome.
Spray it in with the engine running?
A squirt every , say, 30secs or so?
 

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