Axle back exhaust suggestions

[NGOT8R]

Pics are attached as requested. Two issues with the audio request. One, my right side cutout valve has burned out. This is normal. I got over 3 years out of it and I have a replacement on the way that is easy to install. Two, even when I do get the cutout replaced, idle and low rpm are all that my phone will record, due to the microphone protection built into the phone.

The brand of cutouts that I use is Spelab. I had a shop weld flanges that allow for easy replacement of the cutouts. If I remember, I'll try to get some video with audio of idle and low rpm with the cutouts both open and closed. The replacement cutout is supposed to be here sometime this week...

I like that! I’ll bet it screams with the cutouts open! Have you noticed an increase in power with them open vs flowing out the back? Would love to hear them in action if you can grab a couple of videos for us. Thanks

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[mikengail]

A little, not as much as I expected though. It's in the area of around 10rwhp +/- for me. One phenomenon of the cutouts being open is that my boost lowers from around 9psi to 8.5psi. I've seen this phenomenon at dyno days when boosted cars are run through their full exhaust and then with their headers open...

 

[NGOT8R]

A little, not as much as I expected though. It's in the area of around 10rwhp +/- for me. One phenomenon of the cutouts being open is that my boost lowers from around 9psi to 8.5psi. I've seen this phenomenon at dyno days when boosted cars are run through their full exhaust and then with their headers open...

Is that a road course car or drag strip monster?

 

[Mikepol2]

I can't figure out why these haven't become more popular, but on my 2018 GT I replaced the Steeda axle backs with LTH Scorpion axle backs specifically to reduce drone and I loved them. J-tube designed specifically for drone reduction.

https://longtubeheaders.com/product/ford-mustang-gt-18-20-scorpion-cat-back-exhaust-system/

 

[mikengail]

Is that a road course car or drag strip monster?

It's mostly a Daily Driver that will see occasional drag strip use in the Spring and Fall. Since mine is a Convertible, my local track requires a Roll Cage. I have one on order that should be here in about 4 weeks or so. I'm hoping to get into the 10's even at my high altitude.

I have GT350 Half Shafts and some Steeda parts in the rear suspension that has eliminated wheel hop. The cage is no big deal for my use. As we all know, most Adults can't fit in the back and my Grandkids are all grown. Lol. My biggest decision with respect to the cage is do I paint it red or black? Fingers crossed...

 

[skinnyb]

Borla S type. Very mellow at cruise, will bark when you mash it. Zero drone for me. Of course I am stock cats and manifolds right now. Planning on Texas Speed LTH and cats soon though.

 

[tmiller02]

Borla S type. Very mellow at cruise, will bark when you mash it. Zero drone for me. Of course I am stock cats and manifolds right now. Planning on Texas Speed LTH and cats soon though.

How do the Borla S type compare to the Borla Ataks

 

[skinnyb]

How do the Borla S type compare to the Borla Ataks

I haven't personally experienced but the S type is a little more mellow. ATAK is the loudest option from Borla. S type is middle and Touring is the quietest. I personally love the S type. Very nice tone, not too raspy or annoying.

Here is a link to a FB video of mine WOT in 1st gear.

 

[NGOT8R]

It's mostly a Daily Driver that will see occasional drag strip use in the Spring and Fall. Since mine is a Convertible, my local track requires a Roll Cage. I have one on order that should be here in about 4 weeks or so. I'm hoping to get into the 10's even at my high altitude.

I have GT350 Half Shafts and some Steeda parts in the rear suspension that has eliminated wheel hop. The cage is no big deal for my use. As we all know, most Adults can't fit in the back and my Grandkids are all grown. Lol. My biggest decision with respect to the cage is do I paint it red or black? Fingers crossed...

Go get em! 10’s are right around the corner.

 

[beefcake]

Looking for some ideas on a axle back system that does not drone. I currently run a Steeda H-pipe with a MBRP axle back. The car has factory manifolds and cats for now. This setup is driving me nuts with the droning. Will be installing Stainless Power headers with high flow cats next week. Looking for ideas on what to change the MBRP axle back out with. I don't mind loud when I get on it, but listening to the droning at low RPM and cruising is drive me nuts.

i would recommend going with a touring axle back of one of the brands, something to calm it down, you may even consider a full touring catback with a resonator and sell your system as a whole


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