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best de cat/down pipe st205
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Author:  Kris [ Fri Dec 24, 2010 12:47 pm ]
Post subject: 

Quote:
but basically ive tryed fitting a de cat (aussie)
but had issues with overboost
so re fitted the cat with no problems


The overboost thing is a real pain. The likely cause for this is that the stock twin exit design cannot flow enough exhaust gases to slow down the turbo... and hence boost goes wildly out of control.

The solution is to fit a replacement turbo - Turbo Technics S148 single exit wastegate variant. Direct bolt on, no hassles... then fit your huge exhaust etc etc

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