Yeah the small T25 units arent talkative even when working but you have no boost. Heres your list get rid of everything around your airbox there are three vac amplifiers an egr and a wategate. Goodby vacu-crap hello gofast!! Let me try and find the wastegate part no. for reference. Fixing my turbo took 9 full second off my quarter mile time.

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1991 300d 2.5 Turbo OM602