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Go Back   Chevy and GMC Duramax Diesel Forum > Chevy / GMC Duramax 04.5-05 LLY Forum > 04.5-05 LLY Performance Parts Discussion
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04.5-05 LLY Performance Parts Discussion Discussion of Performance Parts For the 04.5-05 LLY Duramax Trucks No Advertising

 
       

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Old 11-02-2009, 06:13 PM   eBay Motors   #1 (permalink)
derrplyr
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anyway to put a limit on boost pressure

was driving today and stepped on it and noticed i flashed about 38 psi...sounds cool but i dont want to blow my engine or turbo. ive turned down my boost controller but can still hit 35. is there anyway i can limit boost or is my guage just off slightly
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2004.5 gmc sierra ext. cab short bed 2500hd duramax 6.6 LLY
Performance: (AFE stage 2 cold air intake)(AFE turbo mouthpiece)(MBRP 4" turbo back w/ 5" tip)(PPE Accelerator w/ PPE guages in overhead mount)(PPE manual boost controller)(BD power Fuel Pump)(resonator plugged)(B&M Allison Deep Oil Pan)(BANKS intercooler)
Accessories: (Black 22" Eagle Alloys w/ 305/45r22 Hankooks)(Belltech 2" drop shackles)(Bilstein heavy duty shocks)(Interior: Alpine 6.5" touch screen w/ alpine speakers in all corners and 2-12" pioneer flat subs 500amp)
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Old 11-02-2009, 06:15 PM   eBay Motors   #2 (permalink)
Hondarider552
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turn boost control all the way down, and take ppe down a notch or two.
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Old 11-02-2009, 06:28 PM   eBay Motors   #3 (permalink)
derrplyr
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but then it wontt go as fast haha. theres nothing on the ppe like the edge where i can set a boost limit?
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2004.5 gmc sierra ext. cab short bed 2500hd duramax 6.6 LLY
Performance: (AFE stage 2 cold air intake)(AFE turbo mouthpiece)(MBRP 4" turbo back w/ 5" tip)(PPE Accelerator w/ PPE guages in overhead mount)(PPE manual boost controller)(BD power Fuel Pump)(resonator plugged)(B&M Allison Deep Oil Pan)(BANKS intercooler)
Accessories: (Black 22" Eagle Alloys w/ 305/45r22 Hankooks)(Belltech 2" drop shackles)(Bilstein heavy duty shocks)(Interior: Alpine 6.5" touch screen w/ alpine speakers in all corners and 2-12" pioneer flat subs 500amp)
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Old 11-02-2009, 06:31 PM   eBay Motors   #4 (permalink)
Hondarider552
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you will only make boost if you have fuel; you make more fuel, you make more boost.

save your trans.
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Old 11-02-2009, 06:54 PM   eBay Motors   #5 (permalink)
derrplyr
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guess ill turn it down
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2004.5 gmc sierra ext. cab short bed 2500hd duramax 6.6 LLY
Performance: (AFE stage 2 cold air intake)(AFE turbo mouthpiece)(MBRP 4" turbo back w/ 5" tip)(PPE Accelerator w/ PPE guages in overhead mount)(PPE manual boost controller)(BD power Fuel Pump)(resonator plugged)(B&M Allison Deep Oil Pan)(BANKS intercooler)
Accessories: (Black 22" Eagle Alloys w/ 305/45r22 Hankooks)(Belltech 2" drop shackles)(Bilstein heavy duty shocks)(Interior: Alpine 6.5" touch screen w/ alpine speakers in all corners and 2-12" pioneer flat subs 500amp)
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Old 11-02-2009, 07:00 PM   eBay Motors   #6 (permalink)
Hondarider552
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what level are you currently on ?
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Old 11-02-2009, 08:15 PM   eBay Motors   #7 (permalink)
Toypuller
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From what I have heard no more than about 32psi. Like honda said what level you running. You have to be on 5 or 6 i would imagine.
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Old 11-02-2009, 08:34 PM   eBay Motors   #8 (permalink)
DirtyMaxx03
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i see 30 on the lvl 4 tune so he has to be on lvl 6 and up i'd imagine.
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Old 11-02-2009, 09:31 PM   eBay Motors   #9 (permalink)
derrplyr
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nope just on 3 on ppe standard
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2004.5 gmc sierra ext. cab short bed 2500hd duramax 6.6 LLY
Performance: (AFE stage 2 cold air intake)(AFE turbo mouthpiece)(MBRP 4" turbo back w/ 5" tip)(PPE Accelerator w/ PPE guages in overhead mount)(PPE manual boost controller)(BD power Fuel Pump)(resonator plugged)(B&M Allison Deep Oil Pan)(BANKS intercooler)
Accessories: (Black 22" Eagle Alloys w/ 305/45r22 Hankooks)(Belltech 2" drop shackles)(Bilstein heavy duty shocks)(Interior: Alpine 6.5" touch screen w/ alpine speakers in all corners and 2-12" pioneer flat subs 500amp)
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Old 11-09-2009, 07:10 AM   eBay Motors   #10 (permalink)
Killerbee
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You are overboosted. Better keep your MAF under 65 lb/min. That is a more important number to turbo health than straight boost.

With respect to your turbo, 35 psi at 2200 is a whole bunch healthier than 34 psi at 3200 rpm.
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