MBRP Catback Installed - Welded and Extended

[Brotherspoon]

Good morning,

I've been waiting to have this exhaust installed since mid December when I received it and yesterday it all went down at a reputable shop I decided on. I went without the resonators and am very impressed by the tone of this exhaust and the theatrics it offers for the Stinger, especially ripping on the highway.

I had the entire exhaust welded, starting with a mid pipe flange delete. The mild steel of the OEM (2023) flange was heavily rusted and this was the way to go. It was mated up nicely with the cats and welded directly. I don't have a picture of the work done on this section.

I requested to have the quad exit pipes extended to match how the OEM setup was positioned in the bezels. I am very happy with how it looks, it is hard to tell that it is modified at first glance but if you know you know and that's exactly how I like it.

This exhaust has an intense low frequency drone right around 2.5K RPM - I knew this going in and it was the primary reason for extending the exit pipes.

The passenger side exhaust actuator connector wiring had to have its retainer clip disconnected to allow connection to the actuator when mounted on the MBRP catback. The wiring was pulled tight here and is just long enough to connect - I will probably need to extend the connector wiring on this side to accommodate my 11Mode controller.

Here are some pictures:

 

[Maljey]

Awesome! How is the drone, considering you had the pipes extended? I have the 2022+ Borla valved exhaust. I did not get the pipes extended, and there is definitely some drone (despite Borla's claims), but its been tolerable. I only really notice it when going uphill.

 

[Brotherspoon]

Awesome! How is the drone, considering you had the pipes extended? I have the 2022+ Borla valved exhaust. I did not get the pipes extended, and there is definitely some drone (despite Borla's claims), but its been tolerable. I only really notice it when going uphill.

Thanks. Sadly, I have nothing else to compare my ride loudness to. I find the drone to be really intense at the critical RPM in higher gear, especially with valves open (duh). I imagine the extension should be an improvement but to what degree, I can't say.

Still adjusting to having the exhaust on the car now and figuring out how to optimize shifting so it sounds smooth. On highway, blasting around >3K all the time is really fun and sounds great, but maintaining that engine speed consumes fuel way to quickly. I find myself switching to comfort mode when just driving to quiet things down.

 

[Maljey]

Yeah different people have different tolerances when it comes to drone. I must say that I've seen drone complaints way more on the 2022+ MBRP versus the 2022+ Borla.

My Borla did mellow out after additional miles on the car, and I've heard people say the same on other exhaust systems as well. Hopefully you'll see the MBRP drone mellow out too. You could also try adding some sound deadening material under the trunk--I know others have done that previously.

Agreed about fuel consumption. I pretty much always drive in Eco mode for normal day to day stuff, and especially if I'm doing a road trip. I know its a performance car, but I like saving on gas $$$ where I can. I'll switch to Sport mode when I want to hear the exhaust better and do some spirited driving.