Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

4"vs5"

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Old Sep 22, 2014 | 07:24 PM
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Default 4"vs5"

hey fellas I'm about to order exhaust Friday and I can't decide 4" straight pipe with down pipe or 5" straight pipe with a down pipe the 4" is on sale so I could order it this week the 5" would have to wait to next week. what's better 4"or5" with a down pipe?
 
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Old Sep 22, 2014 | 08:08 PM
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4" DP with the rest as 5" .. the sound of 5" is incredible .. i like 4.. but my 5 sounds so much more brute like ..
 
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Old Sep 24, 2014 | 05:22 PM
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i lvoed mt 5" dp. but it gets in the way with trans work tho
 
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Old Sep 24, 2014 | 07:33 PM
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how much in the way?
 
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Old Sep 24, 2014 | 08:13 PM
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not too much, its just a little pain in the butt to work in that area.
 
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Old Sep 24, 2014 | 09:18 PM
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I'm thinking about a diamond eye kit 5" straight pipe and then put a MBRP down pipe later on when I have some extra cash any input on diamond eye kits?
 
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Old Sep 24, 2014 | 09:46 PM
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its a piece of pipe when u straight pipe it
 
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Old Sep 24, 2014 | 10:46 PM
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looks like someone's been eating smarties what difference does a aftermarket down pipe make my trucks a Cali so my down pipe is smaller then fed trucks by a little
 
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Old Sep 26, 2014 | 11:38 AM
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little bettre flow, sound changes a little, but tis a royal pain to go a lb7 downpipe
 
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Old Sep 27, 2014 | 11:13 PM
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just order they's parts Friday night what you fellas think? what's next on the list? have a cai and will soon have exhaust installed have a chip that work decent I know I'm going to need tires really soon any suggestions?? thanks!!

http://www.alligatorperformance.com/product-p/dde-k5118a-rp.htm

http://www.alligatorperformance.com/BKJC49-92019-P-MACHForce-XP-Tip-SS-304-p/bkjc49-92019-p.htm
 
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