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Go Back   Chevy and GMC Duramax Diesel Forum > Chevy / GMC Duramax 07.5+ LMM Forums > 07.5+ LMM Performance Parts Discussion
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07.5+ LMM Performance Parts Discussion Discussion of Performance Parts For the 07 and up LMM Duramax Trucks No Advertising

 
       

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Old 09-06-2008, 08:49 AM   eBay Motors   #1 (permalink)
D-Max HD4
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5" Dual Exhaust???

Just wondering if any company out there makes a 5" turbo back dual exhaust that would fit on the LMM? I have only found the 4" for a LLY and LBZ that would fit. I'm tired of the DPF and scrappin that too. Should I go with a straight pipe or with a muffler? I like my trucks loud but didn't know if there we any benefits to a low-restriction muffler. Thanks
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4" MBRP Turbo Back Stainless Dual Exhaust
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Old 09-06-2008, 10:06 AM   eBay Motors   #2 (permalink)
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Most don't make the 5" because of the room to get over the axle in the rear. It's pretty tight for the 4".
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Old 09-06-2008, 10:57 AM   eBay Motors   #3 (permalink)
D-Max HD4
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Fair enough, now I'm just debating on wether or not to get the MBRP 4" Turbo Back Duals with muffler. I have a long drive every week of about 10 hours. Will I be happier with an muffled exhaust on this long trip? Anyone have this MBRP XP exhaust with muffler and compare the tone to a turbo back straight pipe?
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'08 2500HD LTZ HD4 conversion
18" AR rims, 3" Rancho HD Level/Suspension, Custom Interior
Banks Six-Gun with Power PDA
Quadzilla Stealth 2 - For DPF and Top Speed Removal
Banks Ram Air Intake
BD Performance Exhaust Manifold
4" MBRP Turbo Back Stainless Dual Exhaust
PPE Lift Pump, PPE FPRV Shim Kit
Trasn Go JR. Kit
EGR Blocker Plate


"If My Wife Only Knew"
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Old 09-06-2008, 12:36 PM   eBay Motors   #4 (permalink)
BigRedChevy
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Get the muffler, and if you want it louder down the road it's no big deal to delete. The sound with the muffler is great, it's just not very loud.
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Old 09-07-2008, 06:58 PM   eBay Motors   #5 (permalink)
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I have the Silverline 304 Duals with the muffler and love them! It has great sound and look even better than the megaphone that was there!
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Old 09-08-2008, 09:42 AM   eBay Motors   #6 (permalink)
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SOme like the straight pipe sound, others get annoyed after a while. As previously mentioned, get the system and see if you like it with the muffler. If you want more sound, order the dual muffler delete.

btw- 4" duals are a tight fit. 5" duals would have major rubbing and clearance issues.
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Old 09-08-2008, 09:44 AM   eBay Motors   #7 (permalink)
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I agree in y experience it would be way to much work to try and do full 5" duals under the Dmax.

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