Quote:
Originally Posted by 335i-boy
It may be wastegate related. Using the Procede software, try adjusting the wastegate position in the user map adjustables. Change it to 50%. If that doesn't improve things, change it to 30%.
This will tighten the wastegate reducing "slack" in the linkage. If you do not notice any improvement, its probably not wastegate related and may be associated with another component in the exhaust. I would also check that your catless dp's are not hitting each other anywhere, especially between the flanges where they bolt up to the rest of the exhaust.
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Great suggestions, thanks. Checked position of DPs - all clear no probs there. Will try your ideas re reduced wastegate positions and post outcomes. Cheers.