11-04-2009, 10:49 PM
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#21
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DUH! Big Red Truck!
Join Date: Dec 2004
Location: IN
Age: 28
Posts: 13,148
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Re: Flowmasters
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Originally Posted by 94_c/1500
Dyno results?
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Quote:
Originally Posted by 88Vic
Since when is fuel economy measured on a dyno?
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since enrolling in NADC which means you know everything.
Quote:
Originally Posted by 94_c/1500
You are comparing an x muffler to a single in/out. The muffler you are showing is a glasspack.
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no... its a baffled muffler vs a straight through muffler... look closer at the pics.
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11-05-2009, 04:13 PM
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#22
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0_o o_0 0_o o_0
Join Date: Aug 2005
Location: St. Paul, MN
Age: 25
Posts: 4,815
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Re: Flowmasters
Quote:
Originally Posted by crossy's son
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This is a Dynomax Ultra Flo X muffler. I know because its the same one that's on my truck now 
http://www.dynomax.com/mufflers.php?muffler=ultraflox
__________________
08 HHR LS - 2.2 | 5 speed | 30 MPG 
98 K1500 Z71 - 196k | L31 | 60E | 3.73's | 3" BL | 33x12.5x15 Dick Cepek F-C II's | Dynomax Ultra Flo X DI/DO | 13 MPG
84 S15 Jimmy 2dr 4x4 - engine/tranny all rebuilt
FOR SALE! $800 PM for info/pics
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11-06-2009, 11:05 AM
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#23
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Registered User
Join Date: Feb 2008
Location: Overland Park, KS
Posts: 1,591
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Re: Flowmasters
That's also exactly how the Magnaflow dual in, dual out mufflers are internally constructed, they're almost the exact same mufflers.
__________________
95 Sierra C1500
TBI 305, NV3500
10-Bolt 3.42 Open
Custom open air cleaner
Single 3", Thunderbolt cat, 18" d/o Magnaflow, 3.5" tips in front of the rear passenger tire.
New rig (not pictured): 86 Silverado C10 4bbl 350
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11-06-2009, 11:16 AM
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#24
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Registered User
Join Date: Apr 2008
Location: 409 TX
Age: 21
Posts: 1,079
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Re: Flowmasters
Quote:
Originally Posted by 98GreenMachine
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you happy with it?
__________________
Quote:
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Life can take the strongest man, and make him feel all alone.
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11-06-2009, 11:22 AM
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#25
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0_o o_0 0_o o_0
Join Date: Aug 2005
Location: St. Paul, MN
Age: 25
Posts: 4,815
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Re: Flowmasters
Quote:
Originally Posted by XLR8N
you happy with it?
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So far, yeah, I like it alot better than my previous Flowmaster setups. I have it dumped under the bed, before the axle.
__________________
08 HHR LS - 2.2 | 5 speed | 30 MPG
98 K1500 Z71 - 196k | L31 | 60E | 3.73's | 3" BL | 33x12.5x15 Dick Cepek F-C II's | Dynomax Ultra Flo X DI/DO | 13 MPG
84 S15 Jimmy 2dr 4x4 - engine/tranny all rebuilt
FOR SALE! $800 PM for info/pics
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11-06-2009, 11:27 AM
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#26
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Urban Cowboi
Join Date: Aug 2003
Location: Down south...lake worth,FL
Age: 22
Posts: 4,374
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Re: Flowmasters
i have lost MPG since i put on my Borla XR-1 mufflers...mostly because it sounds so awesome i always have my foot in it 
__________________
Thanks xZoomerZx
Quote:
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Originally Posted by foreman00081
funny story, should have told him that if you had voted for Obama theres no way you would have been able to pull him out cause you would have been driving a prius!
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11-06-2009, 11:28 AM
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#27
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Registered User
Join Date: Apr 2008
Location: 409 TX
Age: 21
Posts: 1,079
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Re: Flowmasters
Quote:
Originally Posted by 98GreenMachine
So far, yeah, I like it alot better than my previous Flowmaster setups. I have it dumped under the bed, before the axle.
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what size piping?
thanks btw
__________________
Quote:
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Life can take the strongest man, and make him feel all alone.
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11-06-2009, 11:31 AM
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#28
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0_o o_0 0_o o_0
Join Date: Aug 2005
Location: St. Paul, MN
Age: 25
Posts: 4,815
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Re: Flowmasters
Quote:
Originally Posted by XLR8N
what size piping?
thanks btw
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I still have my factory pipes, so I stuck with the 2.25" I/O.
__________________
08 HHR LS - 2.2 | 5 speed | 30 MPG
98 K1500 Z71 - 196k | L31 | 60E | 3.73's | 3" BL | 33x12.5x15 Dick Cepek F-C II's | Dynomax Ultra Flo X DI/DO | 13 MPG
84 S15 Jimmy 2dr 4x4 - engine/tranny all rebuilt
FOR SALE! $800 PM for info/pics
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11-06-2009, 11:38 AM
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#29
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Registered User
Join Date: Apr 2008
Location: 409 TX
Age: 21
Posts: 1,079
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Re: Flowmasters
Quote:
Originally Posted by 98GreenMachine
I still have my factory pipes, so I stuck with the 2.25" I/O.
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Soooo, How are you running a DI/DO muffler if the stock exhaust is single? 
__________________
Quote:
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Life can take the strongest man, and make him feel all alone.
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11-06-2009, 11:43 AM
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#30
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Urban Cowboi
Join Date: Aug 2003
Location: Down south...lake worth,FL
Age: 22
Posts: 4,374
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Re: Flowmasters
Quote:
Originally Posted by XLR8N
Soooo, How are you running a DI/DO muffler if the stock exhaust is single? |
depends on the year. some 350s had dual exhaust factory to a 2-1 muffler. all NBS HD trucks come with dual exhaust. 1500 get single even the 6.0
__________________
Thanks xZoomerZx
Quote:
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Originally Posted by foreman00081
funny story, should have told him that if you had voted for Obama theres no way you would have been able to pull him out cause you would have been driving a prius!
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11-06-2009, 11:43 AM
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#31
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0_o o_0 0_o o_0
Join Date: Aug 2005
Location: St. Paul, MN
Age: 25
Posts: 4,815
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Re: Flowmasters
Quote:
Originally Posted by XLR8N
Soooo, How are you running a DI/DO muffler if the stock exhaust is single? |
Stock exhaust on the Vortec 350's had a DI/SO muffler...think about that for a second...
__________________
08 HHR LS - 2.2 | 5 speed | 30 MPG
98 K1500 Z71 - 196k | L31 | 60E | 3.73's | 3" BL | 33x12.5x15 Dick Cepek F-C II's | Dynomax Ultra Flo X DI/DO | 13 MPG
84 S15 Jimmy 2dr 4x4 - engine/tranny all rebuilt
FOR SALE! $800 PM for info/pics
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11-06-2009, 11:45 AM
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#32
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Registered User
Join Date: Apr 2008
Location: 409 TX
Age: 21
Posts: 1,079
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Re: Flowmasters
hah, well i haven't dealt with a vortec only TBI. I learn something new every day!
Thanks
Edit-
Do you have a pic of your exhaust green? you got me curious now
__________________
Quote:
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Life can take the strongest man, and make him feel all alone.
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Last edited by XLR8N; 11-06-2009 at 11:47 AM.
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11-06-2009, 11:46 AM
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#33
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0_o o_0 0_o o_0
Join Date: Aug 2005
Location: St. Paul, MN
Age: 25
Posts: 4,815
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Re: Flowmasters
Quote:
Originally Posted by XLR8N
hah, well i haven't dealt with a vortec only TBI. I learn something new every day!
Thanks
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Not a prob 
__________________
08 HHR LS - 2.2 | 5 speed | 30 MPG
98 K1500 Z71 - 196k | L31 | 60E | 3.73's | 3" BL | 33x12.5x15 Dick Cepek F-C II's | Dynomax Ultra Flo X DI/DO | 13 MPG
84 S15 Jimmy 2dr 4x4 - engine/tranny all rebuilt
FOR SALE! $800 PM for info/pics
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11-09-2009, 09:45 AM
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#34
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Registered guest.
Join Date: Jun 2009
Location: here
Posts: 50
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Re: Flowmasters
Quote:
Originally Posted by rebelbowtie
i have lost MPG since i put on my Borla XR-1 mufflers...mostly because it sounds so awesome i always have my foot in it |
That's the same problem I have.
To OP: For mileage go with a straight through design.
__________________
99 2DR 2WD Tahoe, Flowmaster DI/DO, Sport/454 SS wheels, stock ride height.
Life is war, you have to fight to succeed.
Last edited by texasbred; 11-09-2009 at 09:46 AM.
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