[ojp5q]

I’ve seen only one video with the AA single pipe (posted by Jackie Ding) on a G87 and one with an equal length, but am wondering how different they are in terms of tone, rasp and volume (it’s hard to tell from the videos with differing audio quality). Reading the equal length may be louder and raspier but was getting mixed up by different threads. Anyone heard both or know the key differences? Assuming G8X M3/4 comparison videos would be similar. Thanks!

[mike@x-ph.com]

They both amplify the mid-range sound with a deeper and cleaner tone.

The single midpipe offers the cleanest sound, with a rasp free tone through the RPM, even at high RPM.

the equal length has a deeper more aggressive mid-range with a louder higher RPM sound, but can get a bit raspy on high revs.

They are both a major improvement over stock; it ultimately is up to the customer to decide which sound they are looking for.

[ojp5q]

Originally Posted by mike@x-ph.com

They both amplify the mid-range sound with a deeper and cleaner tone.

The single midpipe offers the cleanest sound, with a rasp free tone through the RPM, even at high RPM.

the equal length has a deeper more aggressive mid-range with a louder higher RPM sound, but can get a bit raspy on high revs.

They are both a major improvement over stock; it ultimately is up to the customer to decide which sound they are looking for.

Great, thank you for confirming.

[Geighty7]

Originally Posted by mike@x-ph.com

They both amplify the mid-range sound with a deeper and cleaner tone.

The single midpipe offers the cleanest sound, with a rasp free tone through the RPM, even at high RPM.

the equal length has a deeper more aggressive mid-range with a louder higher RPM sound, but can get a bit raspy on high revs.

They are both a major improvement over stock; it ultimately is up to the customer to decide which sound they are looking for.

Would the OEM flap work with interior button on an after market mid? Does that even commence in the mid pipe area?

[mike@x-ph.com]

Originally Posted by Geighty7

Would the OEM flap work with interior button on an after market mid? Does that even commence in the mid pipe area?

the valves are on the axle back; the midpipe does not affect it in any way

[Geighty7]

Originally Posted by mike@x-ph.com

the valves are on the axle back; the midpipe does not affect it in any way

With an aftermarket axel-back, is there always a possibility of putting the OEM valves on? What are the pros to having an aftermarket one controlled via remote?

[mike@x-ph.com]

Originally Posted by Geighty7

With an aftermarket axel-back, is there always a possibility of putting the OEM valves on? What are the pros to having an aftermarket one controlled via remote?

Depends on the exhaust

I prefer OE valves to keep the OE functionality if needed. And if you want more control, you can buy the SST controller.

[Ravenseal]

Originally Posted by mike@x-ph.com

They both amplify the mid-range sound with a deeper and cleaner tone.

The single midpipe offers the cleanest sound, with a rasp free tone through the RPM, even at high RPM.

the equal length has a deeper more aggressive mid-range with a louder higher RPM sound, but can get a bit raspy on high revs.

They are both a major improvement over stock; it ultimately is up to the customer to decide which sound they are looking for.

Excited for the AA single midpipe based on this information. Sounds like I made the right choice!

[mike@x-ph.com]

Originally Posted by Ravenseal

Excited for the AA single midpipe based on this information. Sounds like I made the right choice!

once received, please share your feedback

[AZG87]

Originally Posted by mike@x-ph.com

They both amplify the mid-range sound with a deeper and cleaner tone.

The single midpipe offers the cleanest sound, with a rasp free tone through the RPM, even at high RPM.

the equal length has a deeper more aggressive mid-range with a louder higher RPM sound, but can get a bit raspy on high revs.

They are both a major improvement over stock; it ultimately is up to the customer to decide which sound they are looking for.

Stoked for the EL mid to come in. Hoping it'll be aggressive enough to let me keep the oem down pipe and axle back

[Ravenseal]

Just watched the Jackie Ding video where he weighs the stock midpipe vs the AA single mid pipe. Insane that it shaves almost 30lbs off from the weight of the car! That’s wild. Replacing the stock muffler with a light weight aftermarket unit would save another 20 or so pounds. Didn’t think making the car louder would also make it lighter!

[AZG87]

Originally Posted by Ravenseal

Just watched the Jackie Ding video where he weighs the stock midpipe vs the AA single mid pipe. Insane that it shaves almost 30lbs off from the weight of the car! That’s wild. Replacing the stock muffler with a light weight aftermarket unit would save another 20 or so pounds. Didn’t think making the car louder would also make it lighter!

Def one advantage of the single over the EL is the additional weight savings. EL will still shave some but not as much.

[rons e92]

Just wanted to drop this in here. This is my car with the AA catted DPs, equal length midpipe, and the OEM valved muffler (valves open for the video). Also have the AA carbon tips which are so nice.

https://www.instagram.com/reel/CzOxU...QwaWI3cW9xdjE0

I know it's not what you're asking, but for continuity I'll include the info here. This was on my way home from having the AA valved rear section swapped back to the OEM one. The reason was just the cold start. It was so thunderous, like the precussion was tangible in your chest. Now with the OEM it's still just as loud up top, but when you're just cruising it feels like a luxury car again and less like a racecar. It also doesn't shake my entire apartment building when remote start the car in the morning.

Other than the ugly look of the OEM muffler, I think this is the ideal set up.

[mike@x-ph.com]

Originally Posted by AZG87

Stoked for the EL mid to come in. Hoping it'll be aggressive enough to let me keep the oem down pipe and axle back

once installed, Let us know how you like it

[2SG5]

I have the AA single mid pipe on both the X3M and M2 paired with the factory axle back. I absolutely love it. Like Mike said, It's a very clean deep sound. How it should've originally come from the factory imo. you wont be disappointed.

[apez]

Is there any emission testing issue with replacing the mid pipe?

[2SG5]

Originally Posted by apez

Is there any emission testing issue with replacing the mid pipe?

It varies by state, in IL, all they do is hook up to your OBD2 port and check for codes. As long as you have no CEL on, you should be good to go. Also new cars here are not required to get emissions testing until after they are 4 years old.

[AZG87]

Originally Posted by apez

Is there any emission testing issue with replacing the mid pipe?

There should not be as you are not touching your primary cat and no cel or tune.

[mike@x-ph.com]

Originally Posted by 2SG5

It varies by state, in IL, all they do is hook up to your OBD2 port and check for codes. As long as you have no CEL on, you should be good to go. Also new cars here are not required to get emissions testing until after they are 4 years old.

+1

[AZG87]

Originally Posted by 2SG5

Also new cars here are not required to get emissions testing until after they are 4 years old.

Similar, in AZ it's not required to do testing until the 5th year from model year. My last car was a MY18 that I bought towards the end of 17, but testing not due until renewal in 2023.

[mike@x-ph.com]

Originally Posted by AZG87

Similar, in AZ it's not required to do testing until the 5th year from model year. My last car was a MY18 that I bought towards the end of 17, but testing not due until renewal in 2023.

[Ravenseal]

Originally Posted by ojp5q

I’ve seen only one video with the AA single pipe (posted by Jackie Ding) on a G87 and one with an equal length, but am wondering how different they are in terms of tone, rasp and volume (it’s hard to tell from the videos with differing audio quality). Reading the equal length may be louder and raspier but was getting mixed up by different threads. Anyone heard both or know the key differences? Assuming G8X M3/4 comparison videos would be similar. Thanks!

Just here reporting back on my AA single Midpipe. I’m extremely happy with the sound signature. It has a deep, loud, low end grunt to it, hardly any rasp - and doesn’t drone on the highway. If you want to keep the stock dp and muffler, I don’t think you can go wrong. It gives an awesome OEM+ sound.