F.Y.I. Borla Axel Back S type install - Mustang Evolution

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Old 02-17-2014, 02:18 PM   #1
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F.Y.I. Borla Axel Back S type install

Just put on new mufflers, sound is very nice, nicer than the stock ones. I raised the back by lifting the rear up from the rear diff. I raised it high enough in-order to put jacks on both sides, 18 inches..Started on the passenger side, now here was the problem, Borla instructions mentioned nothing about REMOVING the front hanger bracket, you will drive yourself crazy if you don't, the clearence is to tight to maneuver the stock muffler off and the passenger side hangers on the Borlas are long and you will struggle mightly if you don't remove bracket. Driver side does not need to be removed. The Borla's mufflers are smaller and lighter…If you take off the bracket, you can complete the job in less the an hour, from jacking to installing. You don't need to put on a lift…One person job…Not sure how big, Corsa, Roush, or Flowmasters mufflers are, however you must remove that bracket in-order to make the install real easy. P.S. installed on 2011 Shelby GT500..almost forgot. Tips extend about 3/4 inch further and Borla inscription is noticeable on very shiny tips.
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Old 02-17-2014, 11:29 PM   #2
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Don't forget your weep holes
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Old 02-18-2014, 08:37 AM   #3
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Don't forget your weep holes

Yes!!^^ I just did mine a few days ago http://youtu.be/aT7VlYUtfkY Click image for larger version

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Old 02-18-2014, 08:38 AM   #4
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Instructions from Borla, unless the new ones are revised Click image for larger version

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Old 02-18-2014, 09:13 AM   #5
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My Ataks didn't come with that page..nor any mention of a drail hole. Says item specific...guess this does not inclide Ataks. Or, I hope not!
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Old 02-18-2014, 09:24 AM   #6
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My Ataks didn't come with that page..nor any mention of a drail hole. Says item specific...guess this does not inclide Ataks. Or, I hope not!
Troy

Neither did mine, my exhaust was sounding funny and I was wondering why, made more popping noises than normal. So I searched "weep holes Borla" and called Borla to verify and they emailed me those instructions
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Old 02-18-2014, 01:34 PM   #7
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Are these to prevent that backfire? My Bassani's are popping like crazy.
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Old 02-18-2014, 01:43 PM   #8
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Are these to prevent that backfire? My Bassani's are popping like crazy.

No, they're drilled to prevent water from sitting inside the mufflers.
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Old 02-18-2014, 02:57 PM   #9
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Are these to prevent that backfire? My Bassani's are popping like crazy.

Yea what six banger said, it'll extend the life of the mufflers and it won't sound like its drowning and popping. I'm very happy with the sound improvement, much cleaner
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Old 02-18-2014, 03:53 PM   #10
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Don't need to, live in florida, the condensation is more of a concern in cooler areas, Borla says it's up to each to decide.
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Old 02-18-2014, 07:22 PM   #11
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I'm in south texas and mine is bad
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Old 02-18-2014, 08:26 PM   #12
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Don't need to, live in florida, the condensation is more of a concern in cooler areas, Borla says it's up to each to decide.

Mine are almost 3 years old, u may have a revised version that doesn't need to be drilled. Mine didn't have any rust or anything, so the stainless steel body is keeping it intact, it was peace of mind for me really. Maybe I had so much built up because it's kinda been sitting for the last 3 months, basically I'm just warming it up here and there
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Old 02-19-2014, 08:03 AM   #13
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Did the stock mufflers have the weep hole, and where were the located, ie front/back, took mine to the dump and never looked them over..thanks
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Old 02-19-2014, 04:45 PM   #14
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Borla says it's up to each to decide.
Guess it is not really a big deal since they are lifetime warranteed!
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Old 02-20-2014, 06:41 AM   #15
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I just always assumed that the high heat would evaporate all of the water in there. Maybe not right away, but sooner than later.
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Old 02-20-2014, 09:31 AM   #16
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Just for reference, for the 05-10 Borla S-Types, I was told by a Borla rep NOT to drill holes in this specific muffler. He said it would ruin the muffler and it makes sense, as there's little muffler to begin with. I assume this is same for the 05-10 ATAKs as well bc they share a similar design.
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Old 02-20-2014, 10:29 AM   #17
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Just for reference, for the 05-10 Borla S-Types, I was told by a Borla rep NOT to drill holes in this specific muffler. He said it would ruin the muffler and it makes sense, as there's little muffler to begin with. I assume this is same for the 05-10 ATAKs as well bc they share a similar design.
Thanks, I'm not drilling, if it starts to sound different I might consider drilling…I threw away the stock mufflers and never considered to examine them for a weep hole. I wonder if you would have to drill, a Roush, Flowmaster, Corsa and others? I have had them all on other cars….This is a first….is it just mustangs per se?…P.S. I am selling a BlackVue DR500W-HD dash cam, 32GB micro, 2 window mounts, 2 power cords, bought from BlackVue 7months ago, beautiful graphics, wi-fi built in…not driving much, if you have a car you drive alot it is really interesting. Rather sell it here, than put on E-Bay….Paid $385.00, let it go for $265.00 free shipping…just another toy…going to post a pic.
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Old 02-20-2014, 06:01 PM   #18
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I never knew how much water would actually get into the mufflers until I bought my roush axle backs. Sometimes I have turned the car on and it looks like a small bottle of water is being poured out of those weep holes, good thing mine came with them already, I heard that the first versions of them didn't have any.
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Old 02-20-2014, 08:23 PM   #19
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Yea those earlier gen Roush mufflers rotted from the inside out. Luckily the Borla were still solid, I guess u get what u pay for.
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Old 02-20-2014, 08:26 PM   #20
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Roush are a great bang for the buck tho, I always recommend them to guys that don't wanna pay to much.
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Old 02-21-2014, 08:28 AM   #21
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I found out real quick last night how important drilling a 1/16 weep hole in each muffler really is in 11+ Borla S-types.

Im currently switching out my 11-12 S-types for the 13-14 ones courtesy of Borla, in favor of the flush appearance the 13-14's give. I never drilled weep holes in my 11-12's because I hadn't heard of it till recently. Wish I did sooner. Upon uninstallation of the mufflers i couldn't help but notice how heavy they got since the original install. Jiggling them loose i could hear a significant amount of wash sloshing around inside. Needless to say once they were vertical, a phenomenal amount of water came gushing out.

Drill your weep holes people.
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Old 02-21-2014, 11:59 AM   #22
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I have a 13 but some how I got the 11-12 version what did you say for them to get you the 13-14 version I had mine with water until I found out about the weep holes
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Old 02-21-2014, 12:44 PM   #23
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I have a 13 but some how I got the 11-12 version what did you say for them to get you the 13-14 version I had mine with water until I found out about the weep holes
I e-mailed Chris Baas at Borla and told him my situation. I said how I took delivery on my 13 5.0 early in 2012. This was long before they made an exclusive '13 S-type muffler. I explained how I really liked how flush the new ones looked as compared to the 11-12's sticking way out the bumper. Asked if we could do something about a possible trade. He requested my original receipt and a couple pictures of my currently installed mufflers in good shape. Got the 13's in 2 days from TN.

Give it a try if your unhappy with yours. Borla has fantastic customer service. Really good people.
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Old 02-24-2014, 07:45 AM   #24
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New 13-14 S Types. I like it alot better.
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Old 02-24-2014, 03:29 PM   #25
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Okay well now I am confused. Are the S-Types prone to water retention or is this an across-the-board thing? Should I drill holes in my Bassani's?
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Old 02-24-2014, 05:05 PM   #26
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Okay well now I am confused. Are the S-Types prone to water retention or is this an across-the-board thing? Should I drill holes in my Bassani's?
I'm not doing anything, would have to remove them to drill properly..and Borla said that's fine, If ever there is an issuse, they will send me new ones. They know of no issues on the 5.4s..
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Old 02-27-2014, 02:24 AM   #27
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Any ideas what water sounds like when it's in the muffler during operation? I can't hear shloshing around when I move them, but they have become VERY tinny around 2,900-3,000 rpm. Almost like something is loose inside the muffler, but just at that rpm. Definitely worse with windows up.
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