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The mkiv Supra Owners Club

Boost fluctuation problems.


dannyspeed

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On going for a spirited drive yesterday, I've noticed that on full pelt ive got a fluctuation in boost. It's feels like someone is turning my boost controller up and down when accelerating. On my boost gauge for example its goes up to 1.2 down to 1.1 back to 1.2 bar and so on.

 

Any ideas?

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On going for a spirited drive yesterday, I've noticed that on full pelt ive got a fluctuation in boost. It's feels like someone is turning my boost controller up and down when accelerating. On my boost gauge for example its goes up to 1.2 down to 1.1 back to 1.2 bar and so on.

 

Any ideas?

 

I had a similar issue at stock boost.. It was the actuator arm on the EGR that was stuck...

 

COuld be the same issue...

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Do you have a boost controller? If a BC is not set up correctly it will cause spiking and give the symptoms you are currently having.

 

Yea I've got a blitz boost controller that's been fitted for about 3 years. I've never had this trouble before with it. I changed the spark plugs last week so unless I pulled a hose off without knowing.

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