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The mkiv Supra Owners Club

Turbo surge on boost!


Milo500

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I have another issue...

 

The car is a single turbo auto.

It has been running perfectly for a couple of years on the setup it currently has...however, after changing the gearbox etc (to sort another problem), it has developed a weird noise and is down on power.

 

On boost it sounds like it is "fluttering" (surging) ... Not to a huge extent, but to the point where you can hear it when watching me going down the strip at Santa pod (outside the car), and is definitely down on power to probs around 400 at the crank, from 500.

 

It has no blow off valve anymore and has no boost leaks.

 

Any guesses?

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