Resonating at idle

[Patrick Daines]

Another fun one!

The car has decided that its going to resonate really badly at idle and anything under 1100rpm.

As soon as I dip the throttle it's fine and dandy!

I have polybushed dogbone mount, steering rack and anti roll bars and standard engine mounts.

It's so bad its headache inducing! Nothing is touching the exhaust its entire length which was my first thought. Any ideas???

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[imprezaworks]

How new is the dog bone mount

 

[Patrick Daines]

Not more than a couple of years, had a powerflex polybush in it too.

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[imprezaworks]

Worn engine mount etc?

 

[Patrick Daines]

I'm gonna take them out and have a look but theres no knocks from the engine when coming on and off throttle hmm.

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[imprezaworks]

What exhaust is on the car

 

[Patrick Daines]

Ktec 2.25 resonated. All new gaskets and clamps put on to try and trace down noises with no avail! The exhaust itself is very quiet once going, even at full chat. Most of the noise comes from the intake.

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[imprezaworks]

I may be making it up but I'm sure I read recently ISH people had issues with the powerflex breaking.