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Author Topic: Flowmaster s40 Vs Gibson Vs Magnaflow  (Read 3622 times)

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Offline bluedevil

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Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #10 on: September 13, 2009, 03:34:14 PM »
Quote from: letsndy on September 13, 2009, 03:19:55 PM
well i ended up going with the flowmaster s40. sounds good but still too quiet for me. i hope it gets louder after it breaks in.

Put on some headers :coolsmiley:

....it should get better with age.
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Offline letsndy

Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #11 on: September 13, 2009, 04:14:05 PM »
Quote from: BlueDevil on September 13, 2009, 03:34:14 PM
Put on some headers :coolsmiley:

....it should get better with age.
any recommendations? and where to get them?
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Offline bluedevil

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Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #12 on: September 13, 2009, 04:21:17 PM »
Quote from: letsndy on September 13, 2009, 04:14:05 PM
any recommendations? and where to get them?


These are Edelbrock  http://www.chevyavalancheclub.com/index.php/topic,5596.0.html


I use Gibson myself.  Others use these and JBA.

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Offline letsndy

Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #13 on: September 13, 2009, 06:34:02 PM »
Quote from: BlueDevil on September 13, 2009, 04:21:17 PM
These are Edelbrock  http://www.chevyavalancheclub.com/index.php/topic,5596.0.html


I use Gibson myself.  Others use these and JBA.


shorties, mids, or long tubes?
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Offline bluedevil

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Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #14 on: September 13, 2009, 07:02:02 PM »
Quote from: letsndy on September 13, 2009, 06:34:02 PM
shorties, mids, or long tubes?

Shorties.
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Offline Main One

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Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #15 on: September 13, 2009, 08:48:01 PM »
My JBA shorties didn't seem to affect how loud my truck is, although with a louder muffler to start with that may not be the case.

If you want louder, you may want to try going mufflerless, just using the cats to muffle the engine sound.  I've heard one truck that was mufflerless and it didn't seem to bad from outside - don't know what it's like to live with on the inside.

Another option is to use an electic exhaust cutout - you could switch back and forth between your fm 40 and going no muffler.
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Offline letsndy

Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #16 on: September 13, 2009, 10:00:12 PM »
has anyone here done headers and removed the cats?

bluedevil, do you use your stock cats with those headers?
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Offline bluedevil

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Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #17 on: September 13, 2009, 10:01:52 PM »
Quote from: letsndy on September 13, 2009, 10:00:12 PM
has anyone here done headers and removed the cats?

bluedevil, do you use your stock cats with those headers?

Yes. 

I pulled the headers from above.  Only time i went under was to unbolt.

Very easy. It took a couple hours.
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Offline Main One

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Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #18 on: September 14, 2009, 10:18:14 AM »
Quote from: letsndy on September 13, 2009, 10:00:12 PM
has anyone here done headers and removed the cats?

Since removing the cats would be illegal for other than off-road use, I doubt that anyone here will fess up to that.    :whistle:
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Offline letsndy

Re: Flowmaster s40 Vs Gibson Vs Magnaflow
« Reply #19 on: September 14, 2009, 10:29:23 AM »
Quote from: Main One on September 14, 2009, 10:18:14 AM
Since removing the cats would be illegal for other than off-road use, I doubt that anyone here will fess up to that.    :whistle:
lol. i had my 02 trans am modded up and had long tubes with no cat and i even passed emissions with it
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