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The mkiv Supra Owners Club

Boost question


Sandy-m2

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Guest Chumpalot

Hi mate,

 

When running stock, you'll get 0.7bar of boost on turbo 1 then there'll be a slight loss in power between 3500 and 4000 rpm. Then 0.8bar when then 2nd kicks in and both turbos are online.

 

Hope this helps.

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May be a stick/faulty vsv thats only opening when it feels like. The second turbo should come in around the same time regardless of gear, so if your note getting the 2nd turbo kick in until 4.5K rpm+ then something is not right.

 

Try it in 3rd or 4th gear and keep an eye on the rev counter to see if the 2nd tubby comes in at around the same time over various runs (ie around 3750rpm)...then report back with your findings.

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