Shelby (by Borla) GT500 Cat-back Exhaust installed (+ video sound clip)

[rxsamg]

Well, they admitted it was fiberglass

their response is that both left and right mufflers appear to have failed.

my suggestion to them back was that, perhaps rather than it being both the left and right mufflers, that it’s the mid pipe section muffler. Would be more plausible to me vs BOTH left and right mufflers being bad.

We’ll see what they say. They want me to remove these and put the new ones on and then send the other ones back.

I really don’t feel like going through this if it’s then actually the mid pipe, and having to find time in the shop and spend a THIRD time redoing it.

Jeff,
That sucks! But better to know now that something’s wrong than keep dealing with it “shedding” over many miles/months! Check out the Explorer threads on their experience. Theirs WAS THE RESONATOR so I would think that translates same the GT500 setup? Personally I’d call them back, ask for a supervisor or any higher up & share with them the explorer group’s experience. Makes no sense to do it twice.

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[Ezatnova]

Jeff,
That sucks! But better to know now that something’s wrong than keep dealing with it “shedding” over many miles/months! Check out the Explorer threads on their experience. Theirs WAS THE RESONATOR so I would think that translates same the GT500 setup? Personally I’d call them back, ask for a supervisor or any higher up & share with them the explorer group’s experience. Makes no sense to do it twice.

I did read a bit of that and it’s interesting. I hope they’ll listen to common sense that it doesn’t make sense to just send me new L and R mufflers

 

[Evolvd]

Well, they admitted it was fiberglass

their response is that both left and right mufflers appear to have failed.

my suggestion to them back was that, perhaps rather than it being both the left and right mufflers, that it’s the mid pipe section muffler. Would be more plausible to me vs BOTH left and right mufflers being bad.

We’ll see what they say. They want me to remove these and put the new ones on and then send the other ones back.

I really don’t feel like going through this if it’s then actually the mid pipe, and having to find time in the shop and spend a THIRD time redoing it.

I’d think if it was the mid pipe you notice fiberglass forward of the mufflers. You just can’t catch a break with these!

 

[Ezatnova]

I’d think if it was the mid pipe you notice fiberglass forward of the mufflers. You just can’t catch a break with these!

yep, still a minor PITA, but was thinking if I disconnected one of the mufflers and there are fibers north of there…it’s the mid pipe resonator. My only concern is if the exhaust gas force blows them right out of the pipe and there wouldn’t really be much evidence

 

[Coosawjack]

I though BORLA was first class??

I bet some of their suppliers have been slipping them crappy packing glass in these days of RIDICULOUS BUSINESS PRACTICES and supply problems....most likely short strand glass instead of long strand or quite possibly much smaller denier??

Sorry y'all are having these problems.....GOOD LUCK getting them resolved!!

 

[Ezatnova]

Ok, wanted to give an update to everyone now that something has happened.

Spoke with Borla several times and worked through a potential resolution.

They ended up exchanging the whole system under warranty rather than guess if it was just the mid resonator orboth mufflers shooting glass.

For what it’s worth, the glass output has slowed a bit but now it’s longer strands, like 1-2” rather than tiny specs. Still doesn’t seem right, so I’m glad they sent a new system.

In addition, I had them send me a Switchfire pipe. I LOVE the tone of the Shelby mid resonator but it’s just a tad quiet for me. Don’t get me wrong, it isn’t a Prius or anything, but it is quieter than the OEM system. Almost seems like THIS Shelby setup should have been OEM and then Borla could have done a louder intermediate step like the OEM system is, to fit between OEM and the Atak.

This time around I’m going to install the Switchfire mid pipe, so it’ll literally be a Shelby stamped Atak.

I have a feeling it’ll be loud for me and all the rasp will be back, of course. But why not have fun and also learn and study the three different sound options between OEM, Shelby, and Atak? I’ll pass on what I learn, of course.

If it is too loud, then I’m back to either going to the Shelby mid resonator and hoping this one doesn’t blow glass, and then seeing if I want that long term or if I end up just going back to OEM for the more violent volume at the expense of the rasp I don’t care for.

More to come.

 

[Epiphany]

Very nice.

 

[WD Pro]

Ok, wanted to give an update to everyone now that something has happened.

Spoke with Borla several times and worked through a potential resolution.

They ended up exchanging the whole system under warranty rather than guess if it was just the mid resonator orboth mufflers shooting glass.

For what it’s worth, the glass output has slowed a bit but now it’s longer strands, like 1-2” rather than tiny specs. Still doesn’t seem right, so I’m glad they sent a new system.

In addition, I had them send me a Switchfire pipe. I LOVE the tone of the Shelby mid resonator but it’s just a tad quiet for me. Don’t get me wrong, it isn’t a Prius or anything, but it is quieter than the OEM system. Almost seems like THIS Shelby setup should have been OEM and then Borla could have done a louder intermediate step like the OEM system is, to fit between OEM and the Atak.

This time around I’m going to install the Switchfire mid pipe, so it’ll literally be a Shelby stamped Atak.

I have a feeling it’ll be loud for me and all the rasp will be back, of course. But why not have fun and also learn and study the three different sound options between OEM, Shelby, and Atak? I’ll pass on what I learn, of course.

If it is too loud, then I’m back to either going to the Shelby mid resonator and hoping this one doesn’t blow glass, and then seeing if I want that long term or if I end up just going back to OEM for the more violent volume at the expense of the rasp I don’t care for.

More to come.

Did you get chance to give the removed system a good inspection to establish the source of the glass ? It might give others something to check before wasting time on fitment / removal / replacement

(I appreciate that you might not want to comment, especially as Borla have looked after you)

WD

 

[Evolvd]

^This cause I’m about to install mine in the next two weeks.

 

[Ezatnova]

Well, installed the Switchfire and the new pipes and mufflers. Actually very surprised that I really like the sound. Not quite as deep as the Shelby mid pipe but volume is on point. Very close to OEM volume but better tone than that. Not annoying when you don’t want it louder. And no drone on the highway in 7th like the OEM did.

 

[Ezatnova]

Did you get chance to give the removed system a good inspection to establish the source of the glass ? It might give others something to check before wasting time on fitment / removal / replacement

(I appreciate that you might not want to comment, especially as Borla have looked after you)

WD

it’s definitely from the mid Pipe. No really clear failure but given the fibers are all in the pipes between the mid and the mufflers…

hopefully you can see in the pics the accumulation of glass

 

[Evolvd]

it’s definitely from the mid Pipe. No really clear failure but given the fibers are all in the pipes between the mid and the mufflers…

That’s weird. I looked inside mine and I just assumed it was perforated steel with no filler.

 

[Ezatnova]

That’s weird. I looked inside mine and I just assumed it was perforated steel with no filler.

yeah it muffles things quite a bit, so there is definitely filler in there. Also if you knock on the casing you can sort of tell it sounds dead from the fiberglass filler.

 

[Ezatnova]

I’ll be recording lots more as soon as I can, and will compile something so everyone can hear stock vs Shelby vs “Atakelby” like I have now.

In the meantime, here is a new video I took of warm idle with the system in Track. I think it sounds glorious. About 75% as deep as the Shelby mid pipe but ~20% louder…very close to OEM but maybe a touch more. This is why I’m going to keep collecting dB data rather than guessing.

also including a link to a great clean video of stock idle for easy comparison, which was recorded by another helpful member in our GT500 community.

“Atakelby”:

Stock:

 

[Evolvd]

I’ll be recording lots more as soon as I can, and will compile something so everyone can hear stock vs Shelby vs “Atakelby” like I have now.

In the meantime, here is a new video I took of warm idle with the system in Track. I think it sounds glorious. About 75% as deep as the Shelby mid pipe but ~20% louder…very close to OEM but maybe a touch more. This is why I’m going to keep collecting dB data rather than guessing.

also including a link to a great clean video of stock idle for easy comparison, which was recorded by another helpful member in our GT500 community.

“Atakelby”:

Stock:

Ooo I like that idle! This is with the crossover pipe?

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