LB7 Turbo whistle - Chevy and GMC Duramax Diesel Forum

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post #1 of 15 (permalink) Old 08-09-2009, 11:32 AM Thread Starter
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LB7 Turbo whistle

I have a 2003 3500 4x4 Duramax with a 6 sp manual,I have a PPE Standard on level 2, the turbo sound is non exisitant!! What are the tricks to get the turbo on the LB7 sounding loud?
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post #2 of 15 (permalink) Old 08-09-2009, 11:40 AM
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intake horn mod, ppe boost valve...and oh ya...a bigger turbo! EFI LIVE will help too...

01 Chevy CCSB LB7
EFI By Rob,
M/A Tranny w/ Precision ML converter ,ATS 4000, 5" ATS CAI, Carrillo Rods, Cut/Coated Pistons, Keyed Crank/Cam, Balanced, H Series Bearings, ARP Head/Main Studs, 35% CP3, AIRDOG-II 165 w/ cat filters, Nicktane, MA Mounts, Cognitos, Sleeves, 4" Straight Pipe, Merchant Pump Rub, Bilstein 5100's, Cobalt Boost/Pyro/Fuel, 8000k's, Duratracs 285/75/16, JVC Head Unit,Memphis Speakers, 10" Pioneer @ 1000w...

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post #3 of 15 (permalink) Old 08-09-2009, 11:57 AM
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I got an airaid stage 2 intake, ppe boost valve and exhaust...plus my ppe standard and it screems.

Sean
2003 Lb7 2wd
Dropped
Efi Live by Rob Coddens
s472
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post #4 of 15 (permalink) Old 08-09-2009, 12:24 PM
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ya that too^ strait pipes and an intake will help also...

01 Chevy CCSB LB7
EFI By Rob,
M/A Tranny w/ Precision ML converter ,ATS 4000, 5" ATS CAI, Carrillo Rods, Cut/Coated Pistons, Keyed Crank/Cam, Balanced, H Series Bearings, ARP Head/Main Studs, 35% CP3, AIRDOG-II 165 w/ cat filters, Nicktane, MA Mounts, Cognitos, Sleeves, 4" Straight Pipe, Merchant Pump Rub, Bilstein 5100's, Cobalt Boost/Pyro/Fuel, 8000k's, Duratracs 285/75/16, JVC Head Unit,Memphis Speakers, 10" Pioneer @ 1000w...

YOUTUBE Channel of Pulls, Races, Launches, etc: YOUTUBE CHANNEL
-Dillon Student at Michigan Tech University studying Mech & Elec Engineering
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post #5 of 15 (permalink) Old 08-09-2009, 12:29 PM
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and nobody thought of the quick, easy and uber cheap mod here?

Louder whistle sounds good.

- Kevin
1998 Silverado K1500 Ext. Cab Z71
S-code 6.5TD / 4L80E
4" Diamond Eye w/ MBRP Straight-thru muffler

1984 GMC S-15 RCLB
Isuzu C223, Borg Warner T-5


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post #6 of 15 (permalink) Old 08-09-2009, 01:15 PM
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just look at my sig i have never heard a stock lb7 turbo as loud as mine. I'm sure there are some just as loud and even louder but not where i live.

Adam
BIG THANKS TO ROB CODDENS AND DUSTIN GULLETT AT ATPTRUCKS FOR ALL THERE HELP
WWW.ATPTRUCKS.COM
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post #7 of 15 (permalink) Old 08-09-2009, 01:17 PM
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Without turbo vanes, its hard pressed to make it whistle. boost valve will help for $25.
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post #8 of 15 (permalink) Old 08-09-2009, 01:22 PM
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cold air intake and staight pipe will make it put out some noise. or you could give fleece a call, there LB7 turbo is the loudest i know to exist.


2005 GMC 2500 LLY Crew cab long bed 4x4..5" diamond eye exhaust and AEM CAI.
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post #9 of 15 (permalink) Old 08-09-2009, 05:19 PM
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freddy has a turbo for the lb7 hes making and ive been hearing that it is pretty loud...

01 Chevy CCSB LB7
EFI By Rob,
M/A Tranny w/ Precision ML converter ,ATS 4000, 5" ATS CAI, Carrillo Rods, Cut/Coated Pistons, Keyed Crank/Cam, Balanced, H Series Bearings, ARP Head/Main Studs, 35% CP3, AIRDOG-II 165 w/ cat filters, Nicktane, MA Mounts, Cognitos, Sleeves, 4" Straight Pipe, Merchant Pump Rub, Bilstein 5100's, Cobalt Boost/Pyro/Fuel, 8000k's, Duratracs 285/75/16, JVC Head Unit,Memphis Speakers, 10" Pioneer @ 1000w...

YOUTUBE Channel of Pulls, Races, Launches, etc: YOUTUBE CHANNEL
-Dillon Student at Michigan Tech University studying Mech & Elec Engineering
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post #10 of 15 (permalink) Old 08-09-2009, 05:43 PM
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you really wont get a lot of whistle out of the stock LB7 turbo like brian said its not a VVT. Some mods help but u still wont get a bunch out of it....best way is to get a diff turbo if youre that worried bout it

Name: Jake Age:24 INSTAGRAM: @jakethomaspnw
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