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Discussion Starter #1
I came across a 2016 435i vert that is very nice but I'm wondering about the aftermarket M Performance Exhaust that was added. Does this exhaust set up increase horsepower or just noise? I'm always a bit leery of aftermarket modifications, that's just me.
I enjoy a throaty exhaust. My old Porsche had a great sound. But it seems that the M Performance might be more for attention and too loud. Do others have an opinion? :dunno:
 

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Porleau
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I have a '17 340xi with port installed M Performance Power & Sound Kit. I don't believe there is any power gains with the exhaust alone (obviously the 'Power' part of the kit gets you another ~35hp/39tq). Anyway, I have found that in 'Comfort' mode the exhaust is just a little more throaty than stock. When in 'Sport' mode, you get the burbles and popping on overrun conditions. It's also significantly more throaty. In no way is it as raucous as modern muscle cars (e.g., high performance Mustangs and Camaros), but it does add a little more personality to the typically sedate B58 engine and exhaust.

I believe the experience you would have with the N55 engine is similar. If it were my money, I would go with the MPPK kit for the N55 which gives you some actual performance gains. I had this in my previous '14 335xi and you do get some of the burbles and pops in Sport mode - even without the M Performance exhaust.
 

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Discussion Starter #3
I have a '17 340xi with port installed M Performance Power & Sound Kit. I don't believe there is any power gains with the exhaust alone (obviously the 'Power' part of the kit gets you another ~35hp/39tq). Anyway, I have found that in 'Comfort' mode the exhaust is just a little more throaty than stock. When in 'Sport' mode, you get the burbles and popping on overrun conditions. It's also significantly more throaty. In no way is it as raucous as modern muscle cars (e.g., high performance Mustangs and Camaros), but it does add a little more personality to the typically sedate B58 engine and exhaust.

I believe the experience you would have with the N55 engine is similar. If it were my money, I would go with the MPPK kit for the N55 which gives you some actual performance gains. I had this in my previous '14 335xi and you do get some of the burbles and pops in Sport mode - even without the M Performance exhaust.
Thanks for your comments! So, do you think that I would not wake up my neighbors in Comfort mode? I'm new to this, how would I know if an MPPK kit has already been installed?
Thanks!
 

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Porleau
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Thanks for your comments! So, do you think that I would not wake up my neighbors in Comfort mode? I'm new to this, how would I know if an MPPK kit has already been installed?
Thanks!
Not at all. It's nothing like the new Mustangs that have a 'quiet' mode to avoid annoying your neighbors. In comfort mode, there's only a slight change in sound at idle and under power. In sport mode, there is a noticeable change, but again, not really raucous until overrun conditions.

For the N55 engines (i.e., 335i, 435i, etc.) BMW offered two M Performance options:

Power Kit: This is essentially an engine tune that increases horsepower and torque by roughly 10%. It also adds some exhaust burbles and pops in some conditions with the factory exhaust. This costs around $1,200 (plus labor) and requires a BMW technician to 'program' the car among other things. I had this applied to my '14 335i. There is a placard that is placed on the fan shroud in the car that indicates if this has been installed. It is very unlikely that your car has this as it wasn't really advertised as a factory option.

Exhaust Kit: This is a replacement of the exhaust system from the cats back (I believe). I think there are some minor performance increases, but the system definitely improves the exhaust sound. I'm not sure what this costs, but is what you are considering.

These can be purchased separately, but they obviously can be bundled for a complete package. When the B58 engine was launched with the 340i, 440i, etc. these were no longer separate - it became a single package. I have this on my current 340i and love it.

In my opinion, I would go with the Power Kit over the exhaust, but that's just me.

Hope this helps!
 

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Discussion Starter #5
Not at all. It's nothing like the new Mustangs that have a 'quiet' mode to avoid annoying your neighbors. In comfort mode, there's only a slight change in sound at idle and under power. In sport mode, there is a noticeable change, but again, not really raucous until overrun conditions.

For the N55 engines (i.e., 335i, 435i, etc.) BMW offered two M Performance options:

Power Kit: This is essentially an engine tune that increases horsepower and torque by roughly 10%. It also adds some exhaust burbles and pops in some conditions with the factory exhaust. This costs around $1,200 (plus labor) and requires a BMW technician to 'program' the car among other things. I had this applied to my '14 335i. There is a placard that is placed on the fan shroud in the car that indicates if this has been installed. It is very unlikely that your car has this as it wasn't really advertised as a factory option.

Exhaust Kit: This is a replacement of the exhaust system from the cats back (I believe). I think there are some minor performance increases, but the system definitely improves the exhaust sound. I'm not sure what this costs, but is what you are considering.

These can be purchased separately, but they obviously can be bundled for a complete package. When the B58 engine was launched with the 340i, 440i, etc. these were no longer separate - it became a single package. I have this on my current 340i and love it.

In my opinion, I would go with the Power Kit over the exhaust, but that's just me.

Hope this helps!
Very interesting and helpful. Thanks!
 

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I came across a 2016 435i vert that is very nice but I'm wondering about the aftermarket M Performance Exhaust that was added. Does this exhaust set up increase horsepower or just noise? I'm always a bit leery of aftermarket modifications, that's just me.
I enjoy a throaty exhaust. My old Porsche had a great sound. But it seems that the M Performance might be more for attention and too loud. Do others have an opinion? :dunno:
I have it on my 2015 435i, installed by my dealer (btw, it's OEM part not aftermarket). Sound is improved but is not obnoxious. Your neighbors should not complain (cold starts may annoy them, but it tones down in a few seconds), it's muted unlike the exhaust on an F-type exhaust and only comes alive under certain conditions.
 

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Discussion Starter #7
I have it on my 2015 435i, installed by my dealer (btw, it's OEM part not aftermarket). Sound is improved but is not obnoxious. Your neighbors should not complain (cold starts may annoy them, but it tones down in a few seconds), it's muted unlike the exhaust on an F-type exhaust and only comes alive under certain conditions.
Thanks. I drove a 2015 M3 that was pretty loud on start up and then toned down after it warmed up. Is it similar? I don't recall the M3 burbling and popping as I've heard on videos of the M Performance exhaust.
 

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Porleau
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Thanks. I drove a 2015 M3 that was pretty loud on start up and then toned down after it warmed up. Is it similar? I don't recall the M3 burbling and popping as I've heard on videos of the M Performance exhaust.
On initial startup, all BMWs rev a little higher and the exhaust flaps are open. This is to heat up the catalytic converters. After 20secs or so the exhaust flaps close and revs come down.
 

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///Monkeyazz Duck
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We have the MPPK on our 2018 340. We were told that we could order the exhaust, or the complete package (exhaust plus chip) but that we could not start out with the exhaust and add the chip later. So we went whole hog as a Port Installed Accessory.

In Comfort mode? It sounds the same as any 340. In Sport? Rich, throaty, some nice burbles and pops on over run. On Sport Plus? Sweet Mother of God. It's joyously, ridiculously indecent. Not in a I'm-16-and-dropped-glass-packs-in-a-ratty-old-Camaro way, but an I'm-driving-a-track-monster-on-the-street-and-the-chicks-dig-it sort of way. Juvenile, but oh-so-fun.
 

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Discussion Starter #10
We have the MPPK on our 2018 340. We were told that we could order the exhaust, or the complete package (exhaust plus chip) but that we could not start out with the exhaust and add the chip later. So we went whole hog as a Port Installed Accessory.

In Comfort mode? It sounds the same as any 340. In Sport? Rich, throaty, some nice burbles and pops on over run. On Sport Plus? Sweet Mother of God. It's joyously, ridiculously indecent. Not in a I'm-16-and-dropped-glass-packs-in-a-ratty-old-Camaro way, but an I'm-driving-a-track-monster-on-the-street-and-the-chicks-dig-it sort of way. Juvenile, but oh-so-fun.
Great information. Thanks! What difference in driving experience do you feel with the chip?
 

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Discussion Starter #12 (Edited)
There chip is worth it but the car you're looking at doesn't have it, right?


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I don't know. So, I'm going to check on that tomorrow. The car is a distance away from where I live, so I'll need to ask the dealership. The car has a sticker on the side that says "M Performance." The listing on the car says "Performance Exhaust", nothing more. How would I know if it had a chip? Would there be a sticker in the engine area?
 

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Porleau
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I don't know. So, I'm going to check on that tomorrow. The car is a distance away from where I live, so I'll need to ask the dealership. The car has a sticker on the side that says "M Performance." The listing on the car says "Performance Exhaust", nothing more. How would I know if it had a chip? Would there be a sticker in the engine area?
The 'M Performance' stickers on the rocker panel were part of the MPPK on my '14 335i and MPPSK on my 340i. That said, the stickers can be purchased separately, so confirm that it has had the tune done. Like I mentioned previously, there should be a plaque on the fan/radiator shroud when you open the hood.
 

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Discussion Starter #14
The 'M Performance' stickers on the rocker panel were part of the MPPK on my '14 335i and MPPSK on my 340i. That said, the stickers can be purchased separately, so confirm that it has had the tune done. Like I mentioned previously, there should be a plaque on the fan/radiator shroud when you open the hood.
Thanks!
 

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'17 X1 - Rooster Cruisin'
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Wouldn't the MPPK and exhaust package show up when you decode the cars VIN if the car was so equipped?
 

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Discussion Starter #16
Wouldn't the MPPK and exhaust package show up when you decode the cars VIN if the car was so equipped?
Nothing showed up when I ran the VIN, so I assume it was done later. Nothing shows on the Carfax either.
 

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Porleau
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Nothing showed up when I ran the VIN, so I assume it was done later. Nothing shows on the Carfax either.
It won't show up on the VIN as it's a port installed option when ordering from the factory.
 

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I don't know. So, I'm going to check on that tomorrow. The car is a distance away from where I live, so I'll need to ask the dealership. The car has a sticker on the side that says "M Performance." The listing on the car says "Performance Exhaust", nothing more. How would I know if it had a chip? Would there be a sticker in the engine area?
The stickers on the rocker panels are just that, stickers. Same as the m performance engine cover. To be sure, you need to check with ISTA-D if the mppk retrofit was added to the VO. When I do vehicle discovery on my car, ISTA shows the MPPK as well as my m performance brake kit retrofit options. Of course, I also know because I was the one who had the dealer install the retrofits and have receipts to prove that. What I'm saying is that I would not trust stickers alone. Seeing that you are seeing the dealer, I would ask them for the service history showing when those retrofits were added.
 

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Discussion Starter #19
The stickers on the rocker panels are just that, stickers. Same as the m performance engine cover. To be sure, you need to check with ISTA-D if the mppk retrofit was added to the VO. When I do vehicle discovery on my car, ISTA shows the MPPK as well as my m performance brake kit retrofit options. Of course, I also know because I was the one who had the dealer install the retrofits and have receipts to prove that. What I'm saying is that I would not trust stickers alone. Seeing that you are seeing the dealer, I would ask them for the service history showing when those retrofits were added.
Great, thanks!
 

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Not at all. It's nothing like the new Mustangs that have a 'quiet' mode to avoid annoying your neighbors. In comfort mode, there's only a slight change in sound at idle and under power. In sport mode, there is a noticeable change, but again, not really raucous until overrun conditions.

For the N55 engines (i.e., 335i, 435i, etc.) BMW offered two M Performance options:

Power Kit: This is essentially an engine tune that increases horsepower and torque by roughly 10%. It also adds some exhaust burbles and pops in some conditions with the factory exhaust. This costs around $1,200 (plus labor) and requires a BMW technician to 'program' the car among other things. I had this applied to my '14 335i. There is a placard that is placed on the fan shroud in the car that indicates if this has been installed. It is very unlikely that your car has this as it wasn't really advertised as a factory option.

Exhaust Kit: This is a replacement of the exhaust system from the cats back (I believe). I think there are some minor performance increases, but the system definitely improves the exhaust sound. I'm not sure what this costs, but is what you are considering.

These can be purchased separately, but they obviously can be bundled for a complete package. When the B58 engine was launched with the 340i, 440i, etc. these were no longer separate - it became a single package. I have this on my current 340i and love it.

In my opinion, I would go with the Power Kit over the exhaust, but that's just me.

Hope this helps!
The MPPK (M-Performance power Kit) for x35 cars (N55) included the tune and air box while using the stock exhaust. On the car that the OP is looking at, you can ask the dealer to send a pic of the engine bay where you should see the intake, new engine cover, as well as the MPPK sticker. BMW also offered a separate M-Performance exhaust for those cars that could be added with or w/o the MPPK. The MPPSK (M-Performance Power and Sound Kit) on the LCI x40 cars (B58) includes the tune and a straight piped cat-back exhaust while using the standard air box. Key features to look for on these cars would be the under hood sticker, the muffler has "M-Performance" embossed on it, and larger exhaust tips in either stainless steel or carbon fiber w/ the M logo etched on the top.

I don't know. So, I'm going to check on that tomorrow. The car is a distance away from where I live, so I'll need to ask the dealership. The car has a sticker on the side that says "M Performance." The listing on the car says "Performance Exhaust", nothing more. How would I know if it had a chip? Would there be a sticker in the engine area?
The M-performance stickers along the side skirts was a separate option when I ordered my 340 and had nothing to do w/ getting the MPPSK.

Wouldn't the MPPK and exhaust package show up when you decode the cars VIN if the car was so equipped?
MPPK & MPPSK are M-Performance accessories installed at the port or the dealer so they would not show on a VIN decoder. If port-installed however, it would be on the original window sticker. And as someone mentioned, you can always go to the service dept and they should be able to pull it there. Maybe even go to your local dealer w/ the last 7 of the VIN and see if they'd check for you? You're not asking for the history or a print out, just what equipment is on the car.
 
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