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Old 07-06-2014, 06:59 PM   #1
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Exhaust for Longtubes

I have BBK Longtubes with Xpipe non catted and currently have Borlas S Type axleback.

Anyone have idea of best exhaust to eliminate high pitch rasp?


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Old 07-06-2014, 07:05 PM   #2
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I have BBK Longtubes with Xpipe non catted and currently have Borlas S Type axleback.

Anyone have idea of best exhaust to eliminate high pitch rasp?


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Get rid of the O/R X for one , that's the biggest contributor.

Other than that you can try some resonators.
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Old 07-06-2014, 07:05 PM   #3
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H-pipe dood.
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Old 07-06-2014, 07:25 PM   #4
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Get rid of the O/R X for one , that's the biggest contributor.

Other than that you can try some resonators.
+1 I've heard countless catted, non catted x and h vids with many different ABs and LTS or Shorty's and have come the same conclusion. I've done shorties and ABs but I'm 99.9% sure my stock mid is staying put.

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Old 07-06-2014, 08:42 PM   #5
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let me ask differently,

what is an AB that will better support long tube headers and an x-pipe on a 2014 mustang, than my current borla s-types, decibel/tone wise.

my longtubes and xpipe are much more permanent than AB's, since a shop is required for removal.
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Old 07-06-2014, 09:30 PM   #6
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let me ask differently,

what is an AB that will better support long tube headers and an x-pipe on a 2014 mustang, than my current borla s-types, decibel/tone wise.

my longtubes and xpipe are much more permanent than AB's, since a shop is required for removal.
60-70 bucks spent at a shop would give you the needed mental peace, and desired sound. If you like the sound of your x pipe but don't need the added rasp of your current setup, I suggest you slap your stock cats back on.

Just for the heck of experimentation: try putting your stock mufflers back on and see how you like their sound with long tuned and o/r x.

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Old 07-06-2014, 09:37 PM   #7
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Doesn't matter how you ask it, 3.7/off road x/ raspy. Put your stockers back on and see if you like it better. Any "aftermarket" AB for the 3.7 will have some degree of rasp with a off road x/Lt set up. Its just the nature of the beast.

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Old 07-07-2014, 01:02 AM   #8
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Exactly ^^^

Like I said... H-pipe

Should of done more research before getting the x
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Old 07-07-2014, 01:03 AM   #9
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I'm happy with x


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Old 07-07-2014, 01:57 AM   #10
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Then enjoy your rasp and quit posting

Otherwise go back to that shop of yours you've been to almost 5 times now and have them swap out that x-pipe, it should only take less than an hour. AB's aren't really going to tame the rasp and even for a quality set will run you $300+
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Old 07-07-2014, 02:09 AM   #11
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Try ur stock AB and if there still to rasby buy some high flow cats for ur x pipe and have the shope wield them on

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Old 07-07-2014, 11:15 AM   #12
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As has already been stated, the rasp is from your X pipe mostly, the sound is created at that point and with free-flowing aftermarket exhaust, it will just go right out.

The stock ABs have more baffling so it could cut down some of it, but to really eliminate the rasp, you have to head for the source.

The 3.7L is just a naturally raspy engine, hence why the stock exhaust has so much constriction and baffling in the mufflers.
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