Detroit Tuned Bypass Valve - MINI Cooper Forum

First Generation MINI Cooper S MINI Cooper S 2002 - 2006

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post #1 of 2 (permalink) Old May 15th, 2014, 08:42 AM Thread Starter
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Detroit Tuned Bypass Valve

Hi All,

I just purchased a Detroit Tuned Bypass Valve for my 2003 MCS with plans to fit myself. I have a good knowledge of working on cars but am wondering if anyone else has done the change and what difficulties you came across when removing the old one and fitting the new!

Can't wait to get it on as think my old stock one is fluffed causing performance issues!!

Thanks all


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post #2 of 2 (permalink) Old May 26th, 2014, 03:42 AM Thread Starter
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Well I fitted the DT bypass valve at the weekend, must admit not a hard job, the hardest part of the job is getting the hose clips back on to all as not a great deal of room in the engine bay (have ripped my fingers to shreds!!) Instructions provided by DT are flawless and easy to follow step by step.

Can notice an improvement in the acceleration and boost being available when I need it. The old one came out with a small gap at the butterfly and a very weak spring.

Enjoyed working on the car...its been a while since I have been under the bonnet of a motor!

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