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(Post Link) post #1 of 7 Old 16-03-14 Thread Starter
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Flutter?

Hi,
Changed my oil and air filter on my mito qv today, wasn't tuning or upgrading really just doing a bit of car care, anyway..
I replaced it with a pipercross panel filter. Driving afterwards I now get this fluttering sound when I'm coming off the accelerator. It's not necessarily a bad sound and Im not looking to get rid, just wondering of its bad for my engine/turbo. Reading up online people go on about wastegate flutter and compressor surge and many other things I only half understand.

Has anyone else changed their air filter and got this noise?
Is it bad for my car?
Thanks in advance
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yes this is very common , and no problem for the engine.
This sound is normaly damped by the paper panel filter.

enjoy!
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(Post Link) post #3 of 7 Old 16-03-14 Thread Starter
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Awesome, thanks mate. Been a bit worried the old filter was hiding a problem.
Thought I'd ask in this section as I'm sure loads of people have changed those filters and would know what I'm on about.
Cheers.
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putting a cone filter on will make it even louder

MiTo QV K&N air filter sound - YouTube
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(Post Link) post #5 of 7 Old 18-03-14 Thread Starter
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Ah yea that's the sound! Although not as loud as that cone filter
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Quote:
Originally Posted by Omnislash View Post
Ah yea that's the sound! Although not as loud as that cone filter
more like this?

Alfa Romeo MiTo Cloverleaf (QV) Standard Exhaust - YouTube

i changed it a couple of times when i had mine, took the little plastic adaptor bit out of the airbox too and it sounded a bit better with the panel filter in
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