[mannymazz]

Originally Posted by High Flier

It's really hard to tell from online videos what it sounds like, and nobody in my area has one installed. For comparison, would you say it sounds more like a muscle car (V8) or one of those annoying little 4-bangers with the coffee can muffler?

It's hard to compare its pretty unique in my opinion it's deep and throaty doesn't sound like a 4cyl to me or raspy at all.

[Hank B]

I realize this is an old thread, but it is still very pertinent to current purchase decisions..

The MPPSK performance is awesome. Just super. Well worth the money if performance enhancement were the only consideration.

But if you regularly use your MPPSK equipped car in an urban/suburban environment and take advantage of each brief opening around a frustrating, traffic obstructing Corolla, minivan, or Porsche SUV driving soccer mom, the MPPSK excessive racket is guaranteed to make cops look up to spot just who is making that full throttle maneuver. This will get you constant tickets plus escalating insurance premiums. Or alternatively, you could just stay off the gas and off of Sport mode, which negates the reason you got the MPPSK in the first place. In the urban/suburban environment, avoiding the noise makes a MPPSK car effectively slower and a lot less fun than one without the Kit. Choose your poison — tickets or inhibited driving!

And I suspect that all that police alerting pop pop pop noise when you lift off the gas is as contrived and artificial as the electronic poser crap piped through an M3/M4’s sound system. I can’t see why a modern electronically fuel injected car should have any unburned fuel passing through to the exhaust system after liftoff to make those pops.

[NormanConquest]

Originally Posted by Hank B

I realize this is an old thread, but it is still very pertinent to current purchase decisions..

The MPPSK performance is awesome. Just super. Well worth the money if performance enhancement were the only consideration.

But if you regularly use your MPPSK equipped car in an urban/suburban environment and take advantage of each brief opening around a frustrating, traffic obstructing Corolla, minivan, or Porsche SUV driving soccer mom, the MPPSK excessive racket is guaranteed to make cops look up to spot just who is making that full throttle maneuver. This will get you constant tickets plus escalating insurance premiums. Or alternatively, you could just stay off the gas and off of Sport mode, which negates the reason you got the MPPSK in the first place. In the urban/suburban environment, avoiding the noise makes a MPPSK car effectively slower and a lot less fun than one without the Kit. Choose your poison — tickets or inhibited driving!

And I suspect that all that police alerting pop pop pop noise when you lift off the gas is as contrived and artificial as the electronic poser crap piped through an M3/M4’s sound system. I can’t see why a modern electronically fuel injected car should have any unburned fuel passing through to the exhaust system after liftoff to make those pops.

Depends on state I guess, I never been pulled over for the noise of my mppsk in ultra dense nj.

[Beek]

The only thing I've ever gotten from a cop is a thumbs up. Part of what I love about the MPPSK is it's only obnoxious when I want it to be. I was in a funeral procession with it in sport one time, the deceased was a car guy though.

[Bobby P]

It's worth the money and you get to keep the warranty. Personally, I love the farts and burbbles. If you don't - just drive in comfort and if you want to hear them, drive in sport (+).

[Hank B]

I too would love the "farts and burbbles" if only the driver could COMPLETELY turn it off at will. The 2018 340i MPPSK equipped demo with about 5000 miles on it was still quite a bit louder in Comfort than a regular 3/440 would be even in Sport+.

And it is too bad you can't set the exhaust level independently of the other Sport vs Comfort settings

[omgthedonny]

Originally Posted by xlover

Plus it comes with a full cat back exhaust. That has two sound modes that are driver selectable. And yea there is whole not voiding your warranty thing. Exhaust gets a TON of compliments.

OP there is a very detailed thread in the B58 mod section. Suggest you start your research there.

What two sound modes? where can you change the sound modes?

[skw]

Originally Posted by omgthedonny

What two sound modes? where can you change the sound modes?

Eco & comfort = valves closed

sport & sport+ = valves open

[omgthedonny]

Originally Posted by skw

Eco & comfort = valves closed

sport & sport+ = valves open

Oh I read it as there was an Idrive setting or something my bad

[Hank B]

Originally Posted by omgthedonny

Oh I read it as there was an Idrive setting or something my bad

No, it's BMW, not you that is "bad" for not allowing more driver configurable driving modes through iDrive menus.

There is no unit cost to add more driver choice to a menu driven system like iDrive.

[bimmer456]

Originally Posted by M34lnch

I have heard the power and sound kit and driven it on the 440i. I will be one of the few voices on here that does not like it. The extra power is nice, but the exhaust sound is annoying, especially on deceleration. It pops a lot and sounds like backfiring. No thanks. It's too bad that BMW will not let you get the power kit by itself for the 440i. And by the way, if you add it at the port, the cost is $3195 + $300 for exhaust tips. Total $3495.

That's the same price as after the port. Only difference is you can finance it.

[F82Tazmanian]

Originally Posted by M34lnch

I have heard the power and sound kit and driven it on the 440i. I will be one of the few voices on here that does not like it. The extra power is nice, but the exhaust sound is annoying, especially on deceleration. It pops a lot and sounds like backfiring. No thanks. It's too bad that BMW will not let you get the power kit by itself for the 440i. And by the way, if you add it at the port, the cost is $3195 + $300 for exhaust tips. Total $3495.

I gotta say I agree, had it on my 440. I did it for warranty and had enough time wasted maintaining, building FBO on my last couple cars. Wasn't a fan of the crackles, sounds ridiculous. Then comfort was "tingy". Power delivery though. 100%. Sharp throttle and a decent gain in power. Not earth shattering but again. It's factory.

[JimBean2014]

Originally Posted by 440iGCCB

I gotta say I agree, had it on my 440. I did it for warranty and had enough time wasted maintaining, building FBO on my last couple cars. Wasn't a fan of the crackles, sounds ridiculous. Then comfort was "tingy". Power delivery though. 100%. Sharp throttle and a decent gain in power. Not earth shattering but again. It's factory.

Agreed.. I have a '16 mppsk b58 and the pops and burbles got old and annoying really fast..I just enjoy the stiffer chassis and power..

[goj]

Originally Posted by Thisisdudewhoru

Paying for the warranty...

Can make near 400whp for under $1000. 450whp for like $1800

And resale value. And drivability. Jb4 is only good at making the most power possible

That's why people are always posting logs asking what's wrong

[blckz06]

Originally Posted by Hank B

I realize this is an old thread, but it is still very pertinent to current purchase decisions..

The MPPSK performance is awesome. Just super. Well worth the money if performance enhancement were the only consideration.

But if you regularly use your MPPSK equipped car in an urban/suburban environment and take advantage of each brief opening around a frustrating, traffic obstructing Corolla, minivan, or Porsche SUV driving soccer mom, the MPPSK excessive racket is guaranteed to make cops look up to spot just who is making that full throttle maneuver. This will get you constant tickets plus escalating insurance premiums. Or alternatively, you could just stay off the gas and off of Sport mode, which negates the reason you got the MPPSK in the first place. In the urban/suburban environment, avoiding the noise makes a MPPSK car effectively slower and a lot less fun than one without the Kit. Choose your poison — tickets or inhibited driving!

And I suspect that all that police alerting pop pop pop noise when you lift off the gas is as contrived and artificial as the electronic poser crap piped through an M3/M4’s sound system. I can’t see why a modern electronically fuel injected car should have any unburned fuel passing through to the exhaust system after liftoff to make those pops.

This is very subjective. I run MPPSK and a downpipe, and drive in sport+ 90% of the time. Have never been harassed by the cops.

[TYE]

What's odd is how bmw went away from the valve on the MPE axel back exhaust. Makes no sense. N55 MPE exhaust has valve. The MPE with valve would be a nice intermediate between Stock and msppk. I'm in the minority camp as well In thinking how ridiculous all
The pops and crackles sound. My GT3 with headers high flow cats and muffler bypass doesn't make all these annoying sounds. If bmw wanted to emulate these sounds for whatever reason, should've been more precise and quick (think 675LT) , not a can of marbles.

[riskmaker76]

Its inherent in BMW motors - My 335 did it with cat back exhaust and even my S1000RR does it -

NO emulation - its the real deal. Its due to how they cut fuel to the motor, the amount of air, etc. etc.

The resonators fix that - if you dont mess with the resonators the MPE is only slightly louder then stock with no increase in pops or burbles...

The MPPSK removes the resonators and in fact its a straight pipe that bypasses the muffler when the valve is open... Sport and Sport plus.. when your in comfort, etc. the valve directs the exhaust through the muffler - thus why its sounds stock in comfort - no pops or burbles either for that matter.

Why they removed the valve on the MPE - no idea if that is the case... i cant see them doing this because it would throw a fault - and BMW will not issue accessories that throw continuous faults.. so not sure but i just doubt it doesnt have the valve since the valve is on the stock muffler.

Originally Posted by TYE

What's odd is how bmw went away from the valve on the MPE axel back exhaust. Makes no sense. N55 MPE exhaust has valve. The MPE with valve would be a nice intermediate between Stock and msppk. I'm in the minority camp as well In thinking how ridiculous all
The pops and crackles sound. My GT3 with headers high flow cats and muffler bypass doesn't make all these annoying sounds. If bmw wanted to emulate these sounds for whatever reason, should've been more precise and quick (think 675LT) , not a can of marbles.

[TYE]

I understand its a BMW choice of how they cut fuel and the amount of air, its just an odd choice. Will be interesting to see how this plays out, if it's a isolated incident or a change by bmw:
MPE snap crackle pop stopped after recent service https://f30.bimmerpost.com/forums/sh....php?t=1495960

The MPE does remove the valve, you have to use a dummy plug. Thats why I say its very odd given the stock exhaust has the valve, as well as the n55 MPE has the valve.

Originally Posted by riskmaker76

Its inherent in BMW motors - My 335 did it with cat back exhaust and even my S1000RR does it -

NO emulation - its the real deal. Its due to how they cut fuel to the motor, the amount of air, etc. etc.

The resonators fix that - if you dont mess with the resonators the MPE is only slightly louder then stock with no increase in pops or burbles...

The MPPSK removes the resonators and in fact its a straight pipe that bypasses the muffler when the valve is open... Sport and Sport plus.. when your in comfort, etc. the valve directs the exhaust through the muffler - thus why its sounds stock in comfort - no pops or burbles either for that matter.

Why they removed the valve on the MPE - no idea if that is the case... i cant see them doing this because it would throw a fault - and BMW will not issue accessories that throw continuous faults.. so not sure but i just doubt it doesnt have the valve since the valve is on the stock muffler.

[riskmaker76]

Tells me the only difference between stock exhaust and MPE is the removal of the valve - thus the slight increase in volume (and lack of crackle pop)..

The amount of crackling and popping is due to many factors - If I adjust my PSI down on my JB4 in fact I get more crackle and poping (loss of power).. if I adjust it TOOO high, i lose it and in fact lose some power... but if I have it dialed in at the sweet spot just the right amount of crackle pop, etc.

The moment i add fuel or the weather changes - computer adjusts and its a crap shoot on what I am getting for the day...

frustrating -- it will eventually come back once the computer learns.

Generally i find the most amount of crackle pop with high timing and lower boost -- vs high boost lower timing.. also better power with higher timing and lower boost...

I have done hundreds of logs to confirm this..

Originally Posted by TYE

I understand its a BMW choice of how they cut fuel and the amount of air, its just an odd choice. Will be interesting to see how this plays out, if it's a isolated incident or a change by bmw:
MPE snap crackle pop stopped after recent service https://f30.bimmerpost.com/forums/sh....php?t=1495960

The MPE does remove the valve, you have to use a dummy plug. Thats why I say its very odd given the stock exhaust has the valve, as well as the n55 MPE has the valve.

[NormanConquest]

Originally Posted by truth649

I'd really like to hear it in person before purchasing. I'd hate to spend all that money and not like it. Not many on the dealer lots with MPPSK

If you live in the PA, NJ, and NY area I can let you hear my mppsk

[Runner340]

Can I get the M Performance power software install without the M Performance exhaust to maintain the warranty?

[Supr3me]

Originally Posted by Runner340

Can I get the M Performance power software install without the M Performance exhaust to maintain the warranty?

No. There's only one part number. It's a kit that can't be purchased separately.