2016 340i - Before and After Dyno - MPPSK Install

babyboss · 01-02-2018, 09:09 AM

Quote:

Originally Posted by reyoasian

Done any 1/4 runs with the MPPSK?

13.1s stock ..
12.8s @ 178km/h on 440i rwd

Beek · 01-02-2018, 12:10 PM

Quote:

Originally Posted by babyboss

13.1s stock ..
12.8s @ 178km/h on 440i rwd

ZF or Manual? Nice improvement in any case!

StockLOL · 02-08-2018, 12:46 AM

Adding the MPPSK to my order was the best decision I’ve made in a long time! Can’t wait to see what 370/370 whp and trq feels like! For those that have it already on their cars, when the exhaust is in comfort mode does the flap close on one side so nothing comes out just like the regular exhaust? Looking at photos the MPPSK has valves on each side so what’s the purpose if one side is always open?

NormanConquest · 02-08-2018, 06:48 AM

Quote:

Originally Posted by StockLOL

Adding the MPPSK to my order was the best decision I’ve made in a long time! Can’t wait to see what 370/370 whp and trq feels like! For those that have it already on their cars, when the exhaust is in comfort mode does the flap close on one side so nothing comes out just like the regular exhaust? Looking at photos the MPPSK has valves on each side so what’s the purpose if one side is always open?

I believe it has to do with building up pressure the bigger the difference between engine and outside pressure the faster the exhaust will eject to the lower pressure zone.

Araemo · 02-08-2018, 07:12 AM

Quote:

Originally Posted by StockLOL

Adding the MPPSK to my order was the best decision I’ve made in a long time! Can’t wait to see what 370/370 whp and trq feels like! For those that have it already on their cars, when the exhaust is in comfort mode does the flap close on one side so nothing comes out just like the regular exhaust? Looking at photos the MPPSK has valves on each side so what’s the purpose if one side is always open?

There are two flaps, and two paths to each tailpipe. The single control signal on the normal exhaust is plugged into a splitter that comes with the MPPSK and controls both flaps at once. With flaps open, there's a straight path from the midpipe to the tailpipes. With the flaps closed, the pipes on both sides are directed through the muffler first.

StockLOL · 02-08-2018, 01:16 PM

Quote:

Originally Posted by Araemo

There are two flaps, and two paths to each tailpipe. The single control signal on the normal exhaust is plugged into a splitter that comes with the MPPSK and controls both flaps at once. With flaps open, there's a straight path from the midpipe to the tailpipes. With the flaps closed, the pipes on both sides are directed through the muffler first.

Ah that makes sense. Looking at it again I see it now. I’m glad both pipes are going to be used all the time, thanks for clarification!

Mike@N54Tuning.com · 02-08-2018, 01:22 PM

Quote:

Originally Posted by Araemo

There are two flaps, and two paths to each tailpipe. The single control signal on the normal exhaust is plugged into a splitter that comes with the MPPSK and controls both flaps at once. With flaps open, there's a straight path from the midpipe to the tailpipes. With the flaps closed, the pipes on both sides are directed through the muffler first.

+1

Mike

High Flier · 02-08-2018, 07:52 PM

Old exhaust (mine) and new exhaust (stock photo).

Blubaron79 · 02-09-2018, 06:09 AM

Quote:

Originally Posted by High Flier

Old exhaust (mine) and new exhaust (stock photo).

This is sweet. I didn't know it routed it straight past the muffler?! This is why it's so awesomely loud.

High Flier · 02-09-2018, 06:59 AM

I've never heard mine from the outside, but other car enthusiasts tell me it sounds something like a V-8 corvette.

Mike@N54Tuning.com · 02-09-2018, 08:47 AM

Quote:

Originally Posted by High Flier

Old exhaust (mine) and new exhaust (stock photo).

Great comparison pic!

Mike

StockLOL · 02-09-2018, 10:46 PM

So in Sport mode it’s always open and like having a straight pipe? And there’s no resonator or muffler in mid pipe?

Araemo · 02-10-2018, 10:04 PM

Quote:

Originally Posted by StockLOL

So in Sport mode it’s always open and like having a straight pipe? And there’s no resonator or muffler in mid pipe?

Pretty much. And they also explicitly trigger some pops and burbles somehow by tweaking fuel mixture or injector timing, I think. After a programming update this past summer, the pops/bangs got a lot more prominent and annoying.

StockLOL · 03-13-2018, 09:46 PM

Quote:

Originally Posted by Araemo

Pretty much. And they also explicitly trigger some pops and burbles somehow by tweaking fuel mixture or injector timing, I think. After a programming update this past summer, the pops/bangs got a lot more prominent and annoying.

For all you MPPSK owners, when you get in the car can you put it in sport mode to have the car start with the valves open? Or do you have to start it, wait for it to warm up a couple minutes and then the valves open on their own when it's in sport mode?

Araemo · 03-14-2018, 06:22 AM

Quote:

Originally Posted by StockLOL

For all you MPPSK owners, when you get in the car can you put it in sport mode to have the car start with the valves open? Or do you have to start it, wait for it to warm up a couple minutes and then the valves open on their own when it's in sport mode?

The valves seem to always be open when you start the engine, and close ~30 seconds later. It's frankly a bit annoying to have a car that loud at start no matter what I want (I think my neighbors are likely tired of it).

But if you switch to sport mode within the first couple minutes, it does seem like sometimes the valves don't open right away. At least, to my ears, it doesn't sound like they open immediately if you switch to sport mode quickly after turning the car on.

riskmaker76 · 03-14-2018, 07:55 AM

Your observations are all correct...

because MPPSK doesnt have a resonator and the way the muffler is configured when the valve is fully open it is a full noise level. When the car starts - its normal operation for all models to open the valve fully and open the waste gate fully (which bypasses the turbo). Even on a stock car the noise level is much higher vs not..

and yes it takes a few minutes after going into sport mode for the valve to then open again... --- kind of dumb honestly. I want it instant.

Quote:

Originally Posted by Araemo

The valves seem to always be open when you start the engine, and close ~30 seconds later. It's frankly a bit annoying to have a car that loud at start no matter what I want (I think my neighbors are likely tired of it).

But if you switch to sport mode within the first couple minutes, it does seem like sometimes the valves don't open right away. At least, to my ears, it doesn't sound like they open immediately if you switch to sport mode quickly after turning the car on.

bmw5858 · 03-14-2018, 01:04 PM

It takes 1 minute on idle, when you start the car, and then put it on sport+ to get the full sound of the exhaust. Saw a video on youtube (just can't put the hand back on it) but the guy was showing his exhaust, and said after 1 minute you can hear the valve open completely, in the video you were able to ear it open it (when he already was in sport+).

Definitely, Bmw has done great job on the MPPSK for the b58! going to add jb4 and CG precision highflow DP this spring, it's going to be a real beast, sound and power!

riskmaker76 · 03-14-2018, 01:38 PM

Have a JB4 now on my MPPSK..

Just keep in mind your limiting factor will be octane - I cant go past Map 1 with the 93 octane I get here in NY without having significant timing drops..

Plus - the DP will cause throttle closures - yes will sound amazing but at the cost of performance loss (TC lower performance). The JB4 can control reduce it (through tuning) but at the cost of then performance (any time you reduce wastegate duty cycles you reduce performance..) its a give and take

anyway.. yes you will love the added HP...

Quote:

Originally Posted by bmw5858

It takes 1 minute on idle, when you start the car, and then put it on sport+ to get the full sound of the exhaust. Saw a video on youtube (just can't put the hand back on it) but the guy was showing his exhaust, and said after 1 minute you can hear the valve open completely, in the video you were able to ear it open it (when he already was in sport+).

Definitely, Bmw has done great job on the MPPSK for the b58! going to add jb4 and CG precision highflow DP this spring, it's going to be a real beast, sound and power!

StockLOL · 03-14-2018, 06:56 PM

Quote:

Originally Posted by riskmaker76

Your observations are all correct...

because MPPSK doesnt have a resonator and the way the muffler is configured when the valve is fully open it is a full noise level. When the car starts - its normal operation for all models to open the valve fully and open the waste gate fully (which bypasses the turbo). Even on a stock car the noise level is much higher vs not..

and yes it takes a few minutes after going into sport mode for the valve to then open again... --- kind of dumb honestly. I want it instant.

What if the engine is warmed up? Let’s say you go for a drive and park it in sport+ mode. Then get back in and fire it up and put in sport+ again? Still takes a minute? Or if you rev the engine up after putting in sport+?

wassy4 · 03-14-2018, 07:02 PM

Quote:

Originally Posted by StockLOL

Quote:

Originally Posted by riskmaker76

Your observations are all correct...

because MPPSK doesnt have a resonator and the way the muffler is configured when the valve is fully open it is a full noise level. When the car starts - its normal operation for all models to open the valve fully and open the waste gate fully (which bypasses the turbo). Even on a stock car the noise level is much higher vs not..

and yes it takes a few minutes after going into sport mode for the valve to then open again... --- kind of dumb honestly. I want it instant.

What if the engine is warmed up? LetÂ’s say you go for a drive and park it in sport+ mode. Then get back in and fire it up and put in sport+ again? Still takes a minute? Or if you rev the engine up after putting in sport+?

Yes, it's every time. Takes about a minute or so.

bmw5858 · 03-14-2018, 07:12 PM

Quote:

Originally Posted by riskmaker76

Have a JB4 now on my MPPSK..

Just keep in mind your limiting factor will be octane - I cant go past Map 1 with the 93 octane I get here in NY without having significant timing drops..

Plus - the DP will cause throttle closures - yes will sound amazing but at the cost of performance loss (TC lower performance). The JB4 can control reduce it (through tuning) but at the cost of then performance (any time you reduce wastegate duty cycles you reduce performance..) its a give and take

anyway.. yes you will love the added HP...

Well.. Going with the CG precision high flow will not occur TC.. Well after seing review of couple of person here and there, it work really fine with jb4 and MPPSK. People said that they switched from Catted ER downpipes to CG precision high flow because of the TC issue.

Vulpe · 03-27-2018, 12:32 AM

Not sure where I read it but if you put your car in accessory, switch to sport, then tap the throttle the valves will open. Then you can start the car with the valves already open. At least I think it stays open, I've never been able to put my face down there to see if the valve closes again when you start, but you can hear the valve open on accessory and tapping the throttle.

02-08-2018, 12:46 AM	#47
StockLOL Private First Class 51 Rep 155 Posts Drives: 2018 340i MPPSK Join Date: Nov 2015 Location: Newport Beach, CA iTrader: (0)	Adding the MPPSK to my order was the best decision I’ve made in a long time! Can’t wait to see what 370/370 whp and trq feels like! For those that have it already on their cars, when the exhaust is in comfort mode does the flap close on one side so nothing comes out just like the regular exhaust? Looking at photos the MPPSK has valves on each side so what’s the purpose if one side is always open?
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02-08-2018, 07:52 PM	#52
High Flier Second Lieutenant 103 Rep 231 Posts Drives: 2019 M550iX Join Date: Mar 2017 Location: USA iTrader: (0)	Old exhaust (mine) and new exhaust (stock photo). Attached Images
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02-09-2018, 06:59 AM	#54
High Flier Second Lieutenant 103 Rep 231 Posts Drives: 2019 M550iX Join Date: Mar 2017 Location: USA iTrader: (0)	I've never heard mine from the outside, but other car enthusiasts tell me it sounds something like a V-8 corvette.
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02-09-2018, 10:46 PM	#56
StockLOL Private First Class 51 Rep 155 Posts Drives: 2018 340i MPPSK Join Date: Nov 2015 Location: Newport Beach, CA iTrader: (0)	So in Sport mode it’s always open and like having a straight pipe? And there’s no resonator or muffler in mid pipe?
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03-14-2018, 01:04 PM	#61
bmw5858 Lieutenant 193 Rep 495 Posts Drives: bmw 340i 2018 Join Date: Dec 2012 Location: Montreal iTrader: (0)	It takes 1 minute on idle, when you start the car, and then put it on sport+ to get the full sound of the exhaust. Saw a video on youtube (just can't put the hand back on it) but the guy was showing his exhaust, and said after 1 minute you can hear the valve open completely, in the video you were able to ear it open it (when he already was in sport+). Definitely, Bmw has done great job on the MPPSK for the b58! going to add jb4 and CG precision highflow DP this spring, it's going to be a real beast, sound and power! __________________ Bmw 435M 2014 Convertible SOLD! Bmw 340i X drive 2018 New orange sunset, Manual transmission, M performance I & II, M performance front lip, side extension rear diffuser, tinted windows. : SOLD Back in old N55 love! Bmw 335 EBII M performance edition : ER Downpipes, VRSF Chargepipe, VRSF HD 6.5 Intercooler, BM3 Stage 2 93 octane, MPPSK, H&R Spring
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03-27-2018, 12:32 AM	#66
Vulpe First Lieutenant 280 Rep 391 Posts Drives: F87 M2C Join Date: Aug 2017 Location: Hawaii iTrader: (0) Garage List 2020 BMW M2 Competi ... [0.00]	Not sure where I read it but if you put your car in accessory, switch to sport, then tap the throttle the valves will open. Then you can start the car with the valves already open. At least I think it stays open, I've never been able to put my face down there to see if the valve closes again when you start, but you can hear the valve open on accessory and tapping the throttle.
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