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BlackGMC build take 2 - Turbo Time

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Old 08-15-2014, 01:47 PM
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Try 25psi. My turbo sounds like a 737
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Old 08-15-2014, 01:50 PM
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Same with my truck. With open exhaust, the turbo whistle is loud as hell. Then when the magma flow goes on, it is dead quiet. Doesn't whistle at all. I tried removing the silencer ring on the turbo but wouldn't figure out how haha
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Old 08-15-2014, 02:09 PM
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Also the ZR1/CTSV iridium plugs are still doing well at 10psi gapped at 0.035. These plugs are the reason i am taking my time upping the boost to see how they perform. So far so good no boost cutout and no KR. 12-14psi will be a good test.
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Old 08-15-2014, 07:32 PM
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Even thou i am still a monster Vag. I am gonna slap some new stickers on the truck. Gonna put a fresh PT.net sticker in and one if these.

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Old 08-16-2014, 04:40 PM
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Congrats Corey! Must be great to be back on the road with your truck running smoothly... I wouldn't know of course.
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Old 08-16-2014, 04:52 PM
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Originally Posted by Spoolin
Congrats Corey! Must be great to be back on the road with your truck running smoothly... I wouldn't know of course.
Why not ?
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Old 08-16-2014, 10:18 PM
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What type of cover do you have on that turbo?

My 475 is full blown 747 once pressure goes positive.
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Old 08-17-2014, 10:51 AM
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Originally Posted by GMCtrk
What type of cover do you have on that turbo?

My 475 is full blown 747 once pressure goes positive.
I got this one from EBay when i first out the turbo on the truck. It turned brown so i replaced it.

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Here is the new one. I got it from ThermalZero

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Old 08-22-2014, 05:31 PM
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Originally Posted by BlackGMC
Well something i noticed with all the new crap. I cannot hear the turbo anymore. I thought no biggie at 7psi. Now at 10psi still cannot hear it. With the monster magnaflow muffler the truck is quiet. I like it.
Just wanted to let you know I pulled the compressor housing off my turbo today and removed the inlet bell. Now it sounds like a 737 as Atomic described. I'd highly recommend it.
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Old 08-22-2014, 08:22 PM
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Originally Posted by oakley6575
Just wanted to let you know I pulled the compressor housing off my turbo today and removed the inlet bell. Now it sounds like a 737 as Atomic described. I'd highly recommend it.
Please explain? Got any pics? Is it just for sound or is it for performance as well?
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