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Old 06-22-2014, 09:28 AM
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High pitched turbo noise

This weekend I put a new 6637 intake on, did the CCC reroute and put on a 6 blade version of the WW2 on my late 99 and I am hearing a real high pitched turbo whistle that doesn't seem normal. Any thoughts? I also put on a gear head custom tunes chip and didn't see anywhere near the power gains after all this that I thought I would.
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Old 06-22-2014, 10:27 AM
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6 blade wheels are LOUD... that combined with an open intake will make a LOT more noise than you're used to.

a tune-only 7.3 isn't going to set the world on fire. custom tunes are more about drivability than raw power
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Old 06-22-2014, 10:43 AM
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Well I'm used to having an open filter I just took of the k&n. It's not really to much louder than what I had before it's just super high pitched.
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Old 06-22-2014, 12:58 PM
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As for the chip not supplying as much power as you thought, I think I've read multiple times that gear head tunes are a little more conservative but still open up the power a little bit. More of a "on the safe side" tunes but still good.
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Old 06-22-2014, 07:26 PM
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It's hard to say without hearing it, but the turbo noise is probably normal, as said above.

As for power output, what are you boost and egt numbers looking like? Have you changed the fuel filter lately?
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Old 06-23-2014, 08:27 AM
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Quote:
Originally Posted by strokin-7.3 View Post
As for the chip not supplying as much power as you thought, I think I've read multiple times that gear head tunes are a little more conservative but still open up the power a little bit. More of a "on the safe side" tunes but still good.
They provide plenty of power, and comparatively are minimally less HP...... maybe....
He does not tune for maximum down low torque or the very maximum in timing he can get from my experience. Tunes run strong and are not embarrassingly Smokey. Even stock TS tunes make a very noticeable difference so if OP is not really noticing much of a difference with a chip installed then it's pretty likely something else is probably going on.
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Old 06-23-2014, 08:42 AM
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Originally Posted by scagle1 View Post
They provide plenty of power, and comparatively are minimally less HP...... maybe....
He does not tune for maximum down low torque or the very maximum in timing he can get from my experience. Tunes run strong and are not embarrassingly Smokey. Even stock TS tunes make a very noticeable difference so if OP is not really noticing much of a difference with a chip installed then it's pretty likely something else is probably going on.
I agree that if he's not seeing much it's not the chip. I read OPs post and thought he got near the power everyone else gets and just expected more. I just read it differently from everyone else lol
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Old 06-23-2014, 09:46 AM
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Completely different but I know my 38r sings pretty well , never run a ww2 on a stocker so can't really comment but seems General consensus says a ww2 and open intake make for more noise / whistle.
Again OP, if you chipped it and didn't get a big grin with the results then I'd say something's wrong. Stock to chipped is a huge difference. I've run DP,No Limit,DI, and stuck with GH and Powerstruck. GH will hang with any of those mentioned while running quieter and less smokey. You have any boost numbers , or any other parameters to go off of besides it's making a noise and not very impressive driveability wise ?

Last edited by scagle1; 06-23-2014 at 02:18 PM.
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Old 06-23-2014, 01:25 PM
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I have a 2000 with a new 38R and a Barder billet WW2. The turbo is much quieter than a typical 38R, and the pitch is a much higher whistle that a non ww2 38R. It sounds like what you are describing. I've heard plenty of 38R's with their distinctive moan and that's what I was expecting with the new turbo and wheel. Instead, it is much quieter, and it's a much higher pitched sound than a stock 38R. Also, I hear it (slightly) on daily driving without seeing any boost on the gauge. As I put accelerator and start seeing boost the sound gets louder and goes higher. So its not what I was expecting, but i think it's normal.

I have an aFe Intake. Power is great and comes on low, EGT's are low, I haul a heavy camper and I'm very pleased with the combo.
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Old 06-24-2014, 02:15 PM
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if you have the 6/6 blade (12 total) wheel its noisy.

especially cruising 5-7 psi.
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