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Discussion Starter · #1 ·
Just installed Cobb ap 91 octane. I've noticed often under heavy load when letting off gas to switch in and out of 3rd maybe 2nd gears I get a slight high pitch audible squeal. Anyone know what this could be? Is this normal?
 

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Did you install their panel filter?

It might be some turbo whistle you couldn't hear through the old filter.
 

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Discussion Starter · #3 ·
Did you install their panel filter?

It might be some turbo whistle you couldn't hear through the old filter.
yes I did and I found 2 hose clamps earlier that I tightened down after I swapped the filter. I would swear its coming from the turbo.
 

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Well there you go.

I hear the turbo more since installing a K&N without a tune.

Its spinning around 200,000 rpm, let it whine.
 

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I just wish I could get a little cheese with that whine.


Dave
 
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