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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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05-06-2008, 08:06 AM
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eBay Motors
#1 (permalink)
| | Junior Member
Join Date: Mar 2008
Posts: 23
| Cat delete pipe ?'s
Can anyone tell me if I (just as a starting point for exhaust) use like a silverline or mrbp cat delete pipe if it will bolt up to the factory exhaust flange where the cat would have bolted up? All the ones that I can find are 4" outlets, will this bolt up directly to the factory exhaust? Thanks. 
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'05 CC/SB, Stock with the exception of KN Cold Air Intake, now added PPE Tuner (more to come......) | 
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05-06-2008, 12:37 PM
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eBay Motors
#2 (permalink)
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Join Date: Oct 2006 Location: Irwin PA
Posts: 1,582
| Hmm not sure you'll have to get a pic of theres. Your factory exhaust is 3.5 inches. The only reason why id say no is IIRC the peace where the cat is, is one whole section from the downpipe to back behind the cat. 
You can do what I did for my muffler delete. Get a 3.5inch stick of exhaust tubing and 2 stainless band clamps. Cut the cat out and cut the pipe to length then install. Heres a pic of my exhaust.  
__________________ 2006 Silverado Shortbed Crew Cab LBZ Escalade handles, Line-x, Painted bumpers and towing mirrors, Tinted Front Windows & Tail lights 2 MTX 10in Subs & Punch 250amp in a custom box. Autometer Ultralite II Pyro & EGT gauges with pillar pod MBRP Turbo Back stainless exhaust (Straight piped), AFE Stage II Intake, PPE Hot+2 265/75/16 Nitto Terra Grapplers on Gear Alloy wheels Lost Kitty Reward if found!! 1999 Ford F-550 Powerstroke Tow Truck-Wrecker **Jerr-Dan Bed, S&B Intake  | 
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05-06-2008, 03:48 PM
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eBay Motors
#3 (permalink)
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Join Date: Dec 2005
Posts: 227
| I have the factory downpipe off of my '03. It is what you need to delete a cat on your truck. | |
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05-07-2008, 08:16 AM
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eBay Motors
#4 (permalink)
| | Junior Member
Join Date: Mar 2008
Posts: 23
| What is the size of outlet of the factory pipe (3.5?)? The pics i've seen of it (silverline's anyway) has the flange on the end, wasn't sure if it would make any difference since it was 4" at the front pipe out going into 3.5 stock (for now  ). Thanks, need the input so i can get a decision made on what/how to finish the exhaust. Any of the vendors have prices or info, feel free to answer or pm.
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'05 CC/SB, Stock with the exception of KN Cold Air Intake, now added PPE Tuner (more to come......)
Last edited by K9Duramax : 05-07-2008 at 08:19 AM.
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05-07-2008, 08:57 AM
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eBay Motors
#5 (permalink)
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Join Date: Apr 2008 Location: Hillsboro, KY.
Posts: 65
| Tow Master, do you have an EGR blocker and finger stick on your truck?
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2006 Chevy Duramax LBZ Dually, Allison 6-speed automatic
4" cat back exhaust, 6" MBRP muffler, 5" pollished stainless steel tip, K&N Air filter, & Turbo Resonator plugged!
Edge Juice with Attitude
Painted door handles, front bumper, bowtie emblem and tow mirrors.
Michelin LTX A/S 265/75/R16, spacers between dual's | |
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05-07-2008, 02:55 PM
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eBay Motors
#6 (permalink)
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Join Date: Oct 2006 Location: Irwin PA
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| Quote:
Originally Posted by duramaxchris06  Tow Master, do you have an EGR blocker and finger stick on your truck? |
No not yet. I actually bought both of them but never installed then. The EGR is optional but the finger stick is needed if you do the blocler plate sometimes if you straight pipe it because it sets a service engine soon light. I set the SES light about 20 minutes after I straight piped it and it has only come on about 5 times since then. I think the Computer compensated it after a while.
__________________ 2006 Silverado Shortbed Crew Cab LBZ Escalade handles, Line-x, Painted bumpers and towing mirrors, Tinted Front Windows & Tail lights 2 MTX 10in Subs & Punch 250amp in a custom box. Autometer Ultralite II Pyro & EGT gauges with pillar pod MBRP Turbo Back stainless exhaust (Straight piped), AFE Stage II Intake, PPE Hot+2 265/75/16 Nitto Terra Grapplers on Gear Alloy wheels Lost Kitty Reward if found!! 1999 Ford F-550 Powerstroke Tow Truck-Wrecker **Jerr-Dan Bed, S&B Intake | |
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05-08-2008, 11:19 PM
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eBay Motors
#7 (permalink)
| | Junior Member
Join Date: Apr 2008 Location: Texarkana, Ar
Posts: 11
| on my 04.5 LLY the pipe going in the muffler is at the bottom but it exits at the top by looking and your pic yours looks straight curious as to why yours is differant from mine BTW where did you buy the 3.5" band clamps
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2004.5 CHEVY 2500HD LT 4x4 Ext Cab Short Bed
6.6 LLY Duramax/Ally 5spd/KenWood deck/KenWood Amp/2-10s withFactory Bose speakers/XM and Onstar BULL BAR | |
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