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Wastegate duty cycles, target boost

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Old Jun 27, 2006, 09:45 AM
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Wastegate duty cycles, target boost

Hi

Have any of you advice about wastegate duty cycles and target boost, using the stock solenoid and ECUflash. I have added a ristrictor to the turbo side of the T piece, so I can now get above stock boost, ( it's about 2.7mm internal diamiter)

With this setup I can spike to 24 psi and hold 20 to the red line, this is a little to much for my stock setup, so I've set target boost to 20psi, now I peak at 21 and hold 18.

Spool up and spike are smooth, but the boost fluctuates quite a bit after this. I think this maybe due to wastegate duty cycle being set at 100. Do any of you have advice on a good starting point for these settings for my almost stock setup in the sig.

MB
Old Jun 30, 2006, 08:35 PM
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Old Jun 30, 2006, 08:41 PM
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What did you put as max boost to get the 24 lbs boost spike. We need some way or some table for the #'s and convert them to boost in lbs.
Old Jun 30, 2006, 09:17 PM
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Well I think you want the wastegate duty to be 100 for all rpm ranges.
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