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Discussion Starter · #1 ·
Hope someone can help, after a spirited drive the boost is going up down up down on full throttle...

R33 GTR link ecu

I removed the bumper refitted the boost pipes and the hks dump valve vacum pipes had splits so replaced them.

Test drove the car and it drove fine.

But today out the blue the boost started going up down again??? Then i removed the indicators and had feel of the pipes etc all seemed ok and the car now holds boost???

Maybe leaky dump valve? I think i will remove that next to dissassemble and clean.

What you guys think? Its like intermittent???

Sam
 

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Discussion Starter · #3 ·
Like it gets to target boost then drops then gets back up then drops and you can feel it on the car as the acceleration does the same and boost gauge
 
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