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6.7 Liter Dodge Cummins 07.5-UP Discussion of 6.7 Liter Dodge Cummins Diesels

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  #1  
Old 03-14-2013, 09:16 PM
acad's Avatar
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Default High pitched whistle

Hey Guys I need some help.

07 Dodge Ram 3500 6.7 4x4

I just did a complete delete of the emissions and installed turbo back pipe delete and installed the smarty jr program.

Here is my concern as I accelerate everything is great until I hit 2000 rpms then there is a high pitched whistle as soon as I drop below 2000 rpms it goes away, if the exhaust break is applied and the motor reves above 2000 rpm it dose the same.

I went through and tightened everything I could possibly tighten that involved the air intake and turbo connections.

Is this normal or do I have a problem and if so what do I need to do to fix this issue.
Thanks for your help
V/R
Acad

Last edited by acad; 03-14-2013 at 09:19 PM..
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  #2  
Old 03-14-2013, 10:32 PM
coors_man_2005's Avatar
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Status: 1/2 ton build done and on the road

   
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its normal its just your exhaust brake actuating nothing wrong at all. when i first deleted mine in early 08 i thought i broke something as well,

coors_man_2005's Sig:08 3500 qcsb 6.7 cummins all deletes raised rail pressure, arp head studs and rocker studs, vulcan head gasket & o rings,(thanks lazarsmith) titanium valve springs, chromoly push rods, silver bullet 66/74/14,fas 150 lift pump, afe stage 2 intake, 12v Cummins carried by 2000 1/2 ton 4x4 dodge 4k.gov springs HD valve springs pump turned up turbo to small
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  #3  
Old 03-14-2013, 10:41 PM
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sounds pretty normal to me dude. just a cummins being a cummins
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  #4  
Old 03-15-2013, 05:05 PM
acad's Avatar
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Hey thanks

Just wanted to make sure that I hadn't missed anything.
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  #5  
Old 03-15-2013, 05:50 PM
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Status: Never drive faster than your Guardian Angel can fly.........

   
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If you hear that whistle followed by a grinding, banging, crunching, all at the same time, then followed by intense flames coming out of the exhaust and between your legs, then you might have cause for concern......... Just kidding dude. Welcome to DB

Bigg Redd's Sig:Red 2006 Dodge CTD, 3500 Dually, Auto, Mag-Hytech Trans pan, 3.73, Kitty MIA, AFE 4" TBE, 4" Aero Turbine, Torque Tube, BHAF, CAI, Quadzilla MMM, Boost Fooler, CXR Intake, CoolingMist Wtr/Meth Kit, EGT-Boost-Trans gauges, Turbo & Exh manifold Blanket.
Black 1994 Chevy Ext-Cab Dually, Lowered, 4L80E, 4.10, Lysholm Supercharged 461 Big Block, loud *** exhaust, CoolingMist Wtr/Meth Kit. "Suckin gas & Haulin ***!"
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  #6  
Old 03-17-2013, 06:25 PM
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I just did my delete and took it for a ride. I noticed the noise right away! Now I have read it is normal. No one told me anything about this. I like it

skirk55's Sig:2011 Dodge Ram Longhorn Diesel Auto. 4x4
Smarty67jrme Big Bore Throttle Delete My Dog
add a leaf / leveling kit Nitto terra Grapplers 305/70/17 10 ply
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