Stainless Power LTH cat-back suggestions?

[PONYPWR]

Hi All! I’ve searched and did not find the answers I was after. Sorry if this is a repeat question. I’m hoping for some help here. I’m wondering what those of you with Stainless Power Long Tube Headers. (3” performance connect) are running for cat-back systems.

I have:

Stainless Power Catted LTH with 3” performance connect mid-pipes.
https://www.americanmuscle.com/stainless-power-catted-lt-headers-sw-1516gt.html

Borla S 3” cat-back
https://www.americanmuscle.com/borla-stinger-3in-catback-black-1517gt.html

Vibrant 3” bottle resonators
https://www.summitracing.com/parts/vpe-1794

The problems:

• It’s too loud. I wouldn’t mind, but I live in an apartment complex and leave at 6:30 am. Cold starts are LOUD!
• The fit. The Borla x-pipe does not line up very well with the mid-pipes coming off the headers. It has to be tilted a little (dropping the passenger side mid-pipe a little) for the distance between the pipes on the Borla x-pipe and the Stainless Power header mid-pipes to line up. This leaves 1 side of the exhaust a little lower than the other side around mid-car.

What I’m after:

• I know it will never be ‘quiet’, and I don’t want it to be. That said, what is the quietest option I have? (Keeping everything 3”)
• Fit. I’d like it to be a neat fit. What 3” cat backs work well with Stainless Power headers
• I prefer low tone, mellow sound. (H-Pipe systems are better, but I’m willing to entertain other options).

The only “sanctioned” cat-back for that header is the Stainless Works retro chambered cat-back:

• https://www.americanmuscle.com/stainlessworks-catback-lt-2015gt.html
• From what I’ve read, this is quite loud and drones like crazy. NOPE!

Any suggestions? Thanks in advance!

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[LOL WUT]

Just grab a compatible active cat back exhaust. Any cat back system with a 3” performance connection should work.

I have long tubes & H pipe into factory active exhaust and in quiet mode it doesn’t wake my family on the days I take it to the office. In any other mode it’s pretty much absurd.

 

[PONYPWR]

Thanks. I know what I need, I just can't seem to find it. I've shopped quite a bit. That's why I'm here asking.

You said: " Just grab a compatible active cat back exhaust. Any cat back system with a 3” performance connection should work."

I have not found a "compatible active cat-back exhaust". It seems you are aware of more than 1. If you could point me in the direction of one of them, I'd be a happy dude. Any specific information would be greatly appreciated. What "compatible active cat-back exhaust with 3" performance connect" have you seen out there? THANKS!

 

[LOL WUT]

@beefcake @LethalBlake have any options for PONYPWR?

 

[brianbr]

Get the resonated Borla midpipe it's a direct bolt on unit with stock headers, but a competent exhaust shop should be able to make it fit with your headers. My buddy put one on his attak system after getting a noise ticket, it's a good bit quieter and sounds better imo.

 

[PONYPWR]

Get the resonated Borla midpipe it's a direct bolt on unit with stock headers, but a competent exhaust shop should be able to make it fit with your headers. My buddy put one on his attak system after getting a noise ticket, it's a good bit quieter and sounds better imo.

Yep, I've considered that. It's high on my list of considerations. My only concern there is that it's 3" on the exit and 2.5 on the inlet. Like you said, a competent shop could make it happen. My understanding is that it is 2.5" internally... kinda defeats the "FULL 3in" thing. Though, the importance of that may just be in my head. If a full 3in solution doesn't present itself, this is likely what I'll end up doing. It's good to get a sense of the effect. If it can tame ATTAKs, it'll be fine with my S's. Thanks for the perspective! Very helpful!

 

[beefcake]

sw has 3 systems

fact connect
performance connect
lg - (our design we created for stainless works)

factory connect will bolt up to pretty much any factory connection catback
performance connect - only designed to bolt to stainless works performance connect catback, thats it, no one elses.
lg - the extended leads we developed give you 14" of extra pipe, to adapt to most systems, most 3" catbacks neck down at the factory connection point. so, you cut off the neckdown portion, making the catback all 3", and then you cut to fit the lg version headers to the length you want to adapt to that catback - when we designed these for SW it was to be able to remove the factory neckdown if customers wanted to do that

the quieter systems will be borla s type, mag street, awe touring, mbrp street, any of the more mild ones. the headers will still make them louder, but they will be the better of them all



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[LethalPerformance]

Are the SW Performance connect headers installed? If so, please take a picture of the exhaust to see how you routed it now (as the performance connect will not work without modification to stock exhaust... it is 3" and a different length than factory).

If they are not installed, you are limited only to Stainless Works products for catbacks AS A DIRECT FIT. This is not to say you cannot purchase another catback, like our Corsa HH midpipe + Corsa touring axleback, BUT it will not directly connect without cutting and welding.

In regards to your inquiry, MOST system WILL be loud in the full 3" offering. One of our employees, Logan, has a catted ARH + Corsa system (HH midpipe) which may be something you would like to hear. Send me a message and I'll have him record a video. It is still loud even with catalytic converters.

AWE touring is a fantastic sounding exhaust, but it is still loud. I actually was surprised on how loud the touring system was (similar to Corsa.. it's their less loud system). The tone is fantastic.. but you mentioned H pipe and this is one of the few options (along with the Corsa HH).

Let us know if you have any questions or want to hear some sound clips... the reality is... loud is part of the game for MOST systems with headers.

 

[brianbr]

Yep, I've considered that. It's high on my list of considerations. My only concern there is that it's 3" on the exit and 2.5 on the inlet. Like you said, a competent shop could make it happen. My understanding is that it is 2.5" internally... kinda defeats the "FULL 3in" thing. Though, the importance of that may just be in my head. If a full 3in solution doesn't present itself, this is likely what I'll end up doing. It's good to get a sense of the effect. If it can tame ATTAKs, it'll be fine with my S's. Thanks for the perspective! Very helpful!

I've looked at it in person and the 3" version doesn't appear to neck down. It may be slightly smaller than 3" but It was definitely bigger than 2.5" internally. There are also 2 versions of it, 2.5 and 3 inch. I have handled both in person.

 

[SROhlms]

If you want a low tone and mellow sound, very few things are going to achieve that with LTs. Your best bet is to add in the Borla resonated midpipe (60661). Unless you're boosted and really pushing for every last single horsepower on the track, an internal section of 1/2" smaller from 3" down to 2.5" will realistically mean very little.

The sound when combined with the Borla S-type is quieter, mellow, and smooth. It still opens up at WOT, but much less so than the vast majority of other combinations.

 

[AZ18yote]

AWE touring is a fantastic sounding exhaust, but it is still loud. I actually was surprised on how loud the touring system was (similar to Corsa.. it's their less loud system). The tone is fantastic.. but you mentioned H pipe and this is one of the few options (along with the Corsa HH).

Amusing aside, I found the AWE Touring rear section mated to the Corsa double X into ARH long tubes to actually be louder than the original full Corsa Xtremes I had on there before chopping it up. Just didn't like the trumpety tone of the Corsas after the long tubes. AWE Touring had a better tone, more character in lower rpms but screamed the same up top. Just goes to show you the resonated H pipe on the full AWE Touring catback calms it down alot.

 

[PONYPWR]

I've looked at it in person and the 3" version doesn't appear to neck down. It may be slightly smaller than 3" but It was definitely bigger than 2.5" internally. There are also 2 versions of it, 2.5 and 3 inch. I have handled both in person.

Thank you! Ya, I'm hoping it's intended to slip fit a 3" pipe on the "intake" side of the resonator. Though, even if it is 2.5", I still think I'm going this route. Thanks for the first-hand account! Very helpful! The 3" Borla S-Type cat-back I have has a 3" in and 3" out x-pipe. It came with an optional reducer to use on the stock headers/cats. I know this resonator doesn't necessarily come with a 3" to 2.5" reducer like the cat-back did, but I'm hoping they are using the same logic. Fingers crossed. Thanks again!

 

[brianbr]

Thank you! Ya, I'm hoping it's intended to slip fit a 3" pipe on the "intake" side of the resonator. Though, even if it is 2.5", I still think I'm going this route. Thanks for the first-hand account! Very helpful! The 3" Borla S-Type cat-back I have has a 3" in and 3" out x-pipe. It came with an optional reducer to use on the stock headers/cats. I know this resonator doesn't necessarily come with a 3" to 2.5" reducer like the cat-back did, but I'm hoping they are using the same logic. Fingers crossed. Thanks again!

No problem. The resonator can also be used with the slip fit reducers just like the x pipe so it should be perfect for what you need.

 

[larr12]

AWE Touring and Stainless header. Not the best sound quality though.

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