Buick Regal Forum : 2011 Buick Regal Forums - View Single Post - Turbo Sound
Thread: Turbo Sound
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post #9 of (permalink) Old 10-08-2011, 01:26 PM
OnyxT07
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Join Date: Sep 2011
Posts: 4
Quote:
Originally Posted by thetoys View Post
I've got the N. Amercian made car and can't hear the turbo.
I do hear engine knock under light acceleration...on dealer first tank of gas.
I just had to have the boost control module replaced and now the turbo is difficult to hear.

If you're getting a knock, switch to 91/93 octane gas per the owners manual. IMO a turbo should never be filled with 87 octane gas. This car will run on 87, just not very well. I switched to 93 and haven't had an issue since.

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