Weird problem with Ford Performance Touring Axle Backs by Borla

[GreenS550]

I loved my Ford Performance Touring Axle backs by Borla until I made a trip to the Upper Peninsula and back. About 1,100 miles mostly highway.

I noticed a drone at highway speeds and the exhaust becoming much louder.

I looked online on Mustang6g.com and found a link where a fellow posted a video. Very nice. Also posted was a link to David at Borla. So, on Saturday I sent an email and amazingly I got one back that morning! The responder said Borla would get a hold of me on Monday to fix the problem.

That said, I went under the car at idle and found a hole on each muffler under the inlet pipe. It was blowing a lot of exhaust and making a weird noise. When I put my finger over it, the sound stopped. So, I'm thinking these ABs might have a problem. If it was a drain hole, would it do this? Very weird.

Has anyone else ever encountered this?

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[Lilwilly]

I have the same exhaust and have noticed the same things you describe. I'm not very happy with the in-car highway drone or the weird noise at idle. I'm considering getting a Corsa axle back or cat back but really don't want to waste the $800 I spent on the Ford Borla system.

 

[15GTCA]

Interesting, as i have the same system. I have not paid attention or heard the noise you described, but i will listen more closely to it and see if mine is making the same noise that you hear.

 

[Dr. Norts]

I loved my Ford Performance Touring Axle backs by Borla until I made a trip to the Upper Peninsula and back. About 1,100 miles mostly highway.

I noticed a drone at highway speeds and the exhaust becoming much louder.

I looked online on Mustang6g.com and found a link where a fellow posted a video. Very nice. Also posted was a link to David at Borla. So, on Saturday I sent an email and amazingly I got one back that morning! The responder said Borla would get a hold of me on Monday to fix the problem.

That said, I went under the car at idle and found a hole on each muffler under the inlet pipe. It was blowing a lot of exhaust and making a weird noise. When I put my finger over it, the sound stopped. So, I'm thinking these ABs might have a problem. If it was a drain hole, would it do this? Very weird.

Has anyone else ever encountered this?

If the hole is small like 1/8" or smaller they are drain holes and are supposed to be there.

Post a pic of said holes.

 

[GreenS550]

They are drain holes. With the car running, they made a weird noise unless you converted the hole with your finger. One on the top and one on the bottom. The new set send by Borla did not make the noise.

 

[Brazos609]

So Borla sent you a net set of axle-backs to be put on?

 

[Grimace427]

Perhaps the drain holes were in the wrong location or drilled too deep.

 

[GreenS550]

So Borla sent you a net set of axle-backs to be put on?

Yes they responded immediately and I am shipping the others back.

 

[Dr. Norts]

Yes they responded immediately and I am shipping the others back.

post a pic of the holes.

 

[GreenS550]

They look just like the holes on the new ones. The old ones are already boxed up and ready for FedEx.

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