[aremmell]

I am not new to M cars, but I am new to the G8X platform and the S58 (and turbos in general), and I've got the typical noob questions that remain unanswered after many days reading these forums and watching YouTube videos.

I understand that exhaust sound is not an objectively quantifiable thing, and that some people prefer certain sounds, whilst other detest those sounds.

That being said, for my purposes, I have the following preferences:

Disqualifiers:

• Tinny sounds, raspiness, or droning
• My neighbors hating me
• Sounding like a clapped out 1993 Honda Accord
• Anything manufactured outside of the USA or Europe

Qualifiers:

• Performance gains when I tune the car
• A louder, deeper tone that is linear with RPM
• BMW-level quality

I would appreciate if we could turn this into the de facto thread for this exact query, since I know it is a common one. The issue is that other threads quickly go off the rails and vendors or people who are sponsored by/otherwise compensated by manufacturers pollute the results and make it impossible to parse.

I'm just going to throw this up here and see what sticks. I and future purchasers of G8X exhaust modifications thank you for your feedback!

[aremmell]

My current (very fluid) plan:

• AA GESI catted downpipes
• AA single midpipe (resonated)

My justification for this plan:

1. Active Autowerke is an established brand and a known quantity
2. I would like to keep at least one set of cats on the car so that it does not smell like fuel
3. The single resonated midpipe is lighter than the equal length, deletes the crossover pipe, and should result in a sound more on the mild side rather than the wild side that still sounds excellent

My much more expensive plan:

• Supersprint catted downpipes
• Supersprint J-Pipe resonated

My justification for this plan:

1. All items from the first list
2. Supersprint sounds the best of everything I've heard so far

Thoughts?

[Berzerker]

I love my AA single midpipe. I went non-resonated since I don't plan on swapping downpipes, but going resonated with a downpipe swipe is definitely the right call.

I also think the single sounds the best of the options out there, I don't think you'll be disappointed at all.

I also agree with your catted downpipe assessment. Last time I sat in a fully open downpipe config car, the smell was pretty noticeable.

[aremmell]

Originally Posted by Berzerker

I love my AA single midpipe. I went non-resonated since I don't plan on swapping downpipes, but going resonated with a downpipe swipe is definitely the right call.

I also think the single sounds the best of the options out there, I don't think you'll be disappointed at all.

I also agree with your catted downpipe assessment. Last time I sat in a fully open downpipe config car, the smell was pretty noticeable.

Thanks for the input. One thing I noticed is that some people reference a resonated equal length AA midpipe, but there is no such option on AA's website. Are these people making things up, or is there another model that is resonated and I am just not seeing it?

[Berzerker]

Originally Posted by aremmell

Thanks for the input. One thing I noticed is that some people reference a resonated equal length AA midpipe, but there is no such option on AA's website. Are these people making things up, or is there another model that is resonated and I am just not seeing it?

Sure you weren't reading about the F8x options? Those had resonated/non-resonated versions of the EL pipes.

[aremmell]

Originally Posted by Berzerker

Sure you weren't reading about the F8x options? Those had resonated/non-resonated versions of the EL pipes.

You are right. I assumed because the video was from 2022 that it was referring to the latest generation, but upon closer inspection, they were talking about S55 engines.

I wonder why that option was removed for the G8X...

[mike@x-ph.com]

Originally Posted by aremmell

Disqualifiers:

• Anything manufactured outside of the USA or Europe

This leaves us with a few options only. Active Autowerke midpipe, Evolution Racewerks, Akrapovic exhaust, REMUS or AWE.

For a deeper midrange without rasp or drone, the single midpipe is your best bet (active is the only brand from the ones mentioned which makes a single mipipe).

From what you described in your first post, that sounds like the best option for you.

Btw, we offer 170 brands. No one pays us extra to push their products. My goal is to get you what you are looking for, whatever it is, I'm sure we offer it. Vendors who offer so many brands are the best sources to ask, in my opinion.

[Bguggs]

I have the active x pipe non resonated and installing active downpipes on my g 83 in the next two weeks. I have been very happy and this is the 3rd active system I have had between my m cars. I have a g83 and all my stuff comes from Mike at X-PH great service and prices.

[docjavier]

[QUOTE=mike@x-ph.com;30790268]This leaves us with a few options only. Active Autowerke midpipe, Evolution Racewerks, Akrapovic exhaust, REMUS or AWE.

Another option I found when doing my research, SuperSprint makes a single resonated Mid Pipe, Italian.

I just noticed that OP, already mentioned SuperSprint.

[OGOverkill]

Anyone have a sound clip of the akrapovik resonated mid pipe?

[mike@x-ph.com]

Originally Posted by Idemo

AWE, REMUS, PSI, IRL, ER for top
Quality USA made, i believe they are offering a single and dual mid options,
I’ve settled for the IRL as its a true 3.5 inch design vs just the mid section being a 3.5. Weather has been bad and I don’t have any sound clips .

I don't see anywhere on IRL's website where it says its made in the US

[daza_gt]

I vote for supersprint resonated jpipe. Quality is top notch, well worth the price tag and cant beat the sound either. I have it paired with stock downpipes and axleback, it’s got a nice deep tone absolutely no rasp.

[Needsdecaf]

Originally Posted by daza_gt

I vote for supersprint resonated jpipe. Quality is top notch, well worth the price tag and cant beat the sound either. I have it paired with stock downpipes and axleback, it’s got a nice deep tone absolutely no rasp.

Thoughts on choosing resonated vs. non? Do you plan on adding DP's or an axleback in the future? Or just really wanted to make sure you didn't have any drone?

[daza_gt]

Originally Posted by Needsdecaf

Thoughts on choosing resonated vs. non? Do you plan on adding DP's or an axleback in the future? Or just really wanted to make sure you didn't have any drone?

My main goal was to minimize drone and rasp, which this thing does a great job of. I do plan on adding a catted downpipe in the future but will most likely keep the OEM axleback.

[WolfpackCO]

aremmell I was in the same situation as you when I first got my ‘24 G82. I ended up with the following config:

• AWE Switchpath exhaust
• AWE non-res midpipe that keeps the secondary cats
• AA GESI catted downpipes
• Dahler exhaust valve controller

The setup in my opinion is flawless. Deep roar and nice burples with hardly to no rasp. Close the valves and put the car in efficient mode and your neighbors won’t know you modded a thing.

Good luck with your search!

[mike@x-ph.com]

Originally Posted by WolfpackCO

aremmell I was in the same situation as you when I first got my ‘24 G82. I ended up with the following config:

• AWE Switchpath exhaust
• AWE non-res midpipe that keeps the secondary cats
• AA GESI catted downpipes
• Dahler exhaust valve controller

The setup in my opinion is flawless. Deep roar and nice burples with hardly to no rasp. Close the valves and put the car in efficient mode and your neighbors won’t know you modded a thing.

Good luck with your search!

Thats an excellent setup. AWE sounds excellent but its a mild sound increase, by upgrading the primary cats you are fixing this issue while keeping the sound clean with the secondary cats intact

[WolfpackCO]

mike@x-ph.com Well said! I agree wholeheartedly!

[aremmell]

Originally Posted by Idemo

AWE, REMUS, PSI, IRL, ER for top
Quality USA made, i believe they are offering a single and dual mid options,
I’ve settled for the IRL as its a true 3.5 inch design vs just the mid section being a 3.5. Weather has been bad and I don’t have any sound clips .

That looks great. Do you have soundtrack? What did it set you back?

[aremmell]

OP Update:

I have ordered from Supersprint. I chatted with their salesperson on Whatsapp and they were extremely helpful and friendly. They even suggested which parts I should buy and they were not the ones I would have chosen (my set up was more expensive, which is rare for a company to do–steer you towards a cheaper option!).

Parts ordered:

1. Catless downpipes: 527611
2. Catted j-pipe (single midpipe): 527732
3. Connecting pipes (connects to OEM muffler assembly): 527713 and 989244

ETA is a couple weeks, as they ship from Europe and are made-to-order. I'll report back when I have pics/video/sound.

[daza_gt]

Originally Posted by aremmell

OP Update:

I have ordered from Supersprint. I chatted with their salesperson on Whatsapp and they were extremely helpful and friendly. They even suggested which parts I should buy and they were not the ones I would have chosen (my set up was more expensive, which is rare for a company to do–steer you towards a cheaper option!).

Parts ordered:

1. Catless downpipes: 527611
2. Catted j-pipe (single midpipe): 527732
3. Connecting pipes (connects to OEM muffler assembly): 527713 and 989244

ETA is a couple weeks, as they ship from Europe and are made-to-order. I'll report back when I have pics/video/sound.

Good choice.

[Kstein]

I have a G80 with Supersprint resonated J-pipe and AA catted downpipes. Aside from working through a fitment issue causing a CEL, it sounds amazing. One recommendation: look into a valve controller. I have the VSC-2 and it also brings a lot in terms of tone and rasp.

[mike@x-ph.com]

Originally Posted by Kstein

I have a G80 with Supersprint resonated J-pipe and AA catted downpipes. Aside from working through a fitment issue causing a CEL, it sounds amazing. One recommendation: look into a valve controller. I have the VSC-2 and it also brings a lot in terms of tone and rasp.

Sound clip please