Which CAI for Turbo Whistle? - Ford Powerstroke Diesel Forum
6.7 Performance Parts Discussion 6.7 Performance Parts Discussion

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Old 04-02-2013, 07:24 AM
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Which CAI for Turbo Whistle?

I'm looking at AFE and S&B. I had an AFE on my 6.4 and it really helped the whistle. Which one works best for the 6.7? I'm running the H&S delete on no power added. Thanks for the read and input!

Last edited by 1stgear; 04-04-2013 at 05:13 AM.
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Old 04-03-2013, 06:03 AM
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The CAI won't help the turbo whistle on the 6.7 much it just adds a little more growl in cab and a slight amount of whistle. I'd recommend the S&B with the plexi-glass filter box lid removed, it's tried and true on these trucks. If you're deleted you should be hearing a significant amount of whistle already even with a full exhaust. I'm open downpipe and my turbo whistle is crazy loud at any throttle position.
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Old 04-03-2013, 06:36 AM
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you wont hear any more whistle.
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Old 04-03-2013, 05:16 PM
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does running the s&b with out the top plexi glass on really do any thing ive seen people say this a couple of times on here
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Old 04-04-2013, 05:42 AM
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Quote:
Originally Posted by lhood6.7 View Post
does running the s&b with out the top plexi glass on really do any thing ive seen people say this a couple of times on here
It should let it breathe better and people were saying .5-1mpg gains vs with the cover on. I can't back that up because I installed mine without the cover since day one.
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Old 04-04-2013, 06:21 AM
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Thanks for the replies and info, Axis.
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