2017 440i Build Help

bmw.gp · 09-09-2022, 01:33 PM

Hey guys, was hoping to get some advice on my 2017 F32 build. I don’t have any plans to take it to the track anytime soon, so I’m really just trying to get better sound and a bit more power. Would the best way to do this be to get the MPE and a Stage 1 flash/piggyback tune? For context, I live in California and it’s my understanding that any bigger mods (catless/high flow DP, HPFP, etc.) wouldn’t pass smog. This will be my first experience with modding and I don’t want to have to deal with changing parts back to OEM when the time comes to smog, so I want to stick with the easy stuff for now.

Any advice or build suggestions would be much appreciated. Thanks!

blacksapphire440i · 09-09-2022, 01:52 PM

Quote:

Originally Posted by bmw.gp

Hey guys, was hoping to get some advice on my 2017 F32 build. I don’t have any plans to take it to the track anytime soon, so I’m really just trying to get better sound and a bit more power. Would the best way to do this be to get the MPE and a Stage 1 flash/piggyback tune? For context, I live in California and it’s my understanding that any bigger mods (catless/high flow DP, HPFP, etc.) wouldn’t pass smog. This will be my first experience with modding and I don’t want to have to deal with changing parts back to OEM when the time comes to smog, so I want to stick with the easy stuff for now.

Any advice or build suggestions would be much appreciated. Thanks!

Stage 1 or MPPSK is OK. If you want more sound get your resenators chopped off or get an aftermarket axleback. MPE is a great option for keeping it OEM

midxotic · 09-09-2022, 02:01 PM

Here are some options:

1. MPPSK - M Performance Power and Sound Kit - Cat back exhaust with valves (quiet in comfort/eco and loud in sport/sport plus) and a mild engine tune similar to MHD/BM3 Stage 1 flash. This is expensive but does not void warranty. (about $3,000)

2. AWE or Dinan Midpipe and a Stage 1 tune with MHD or BM3. This will give you some more sound and still utilize the factory exhaust flap with the stock muffler. You can also get a dual resonator delete which does the same thing as the Dinan/AWE Midpipe and might be cheaper. (about $600-$700 for the midpipe and $500 for the tune; cost of dual resonator delete varies by exhaust shop)

3. Catback Exhaust and Stage 1 Tune. This is if you want more noise than option two. Some catback exhausts utilize the factory valve (AFE) and some do not (Dinan/AWE). If the valve is something you want to keep, I would make sure you pick the right catback or just stick with option 2. ($2000 for the catback, $500 for the tune)

bmw.gp · 09-09-2022, 03:01 PM

Thanks guys, this is great information. It sounds like option 2 is the most bang for your buck, but I’ll do some research on the sound difference between a res delete / midpipe and an upgraded axleback.

I’m also considering just picking up a used MPE and a MHD/BM3 flash since the full MPPSK is so much more expensive and only gets you an increase of around 30hp (compared to BM3’s supposed 40-60hp increase on 91 octane).

09-09-2022, 01:33 PM	#1
bmw.gp Enlisted Member 6 Rep 47 Posts Drives: 2017 BMW 440i Join Date: May 2022 Location: Los Angeles iTrader: (1) Garage List 2017 BMW 440i [0.00]	2017 440i Build Help Hey guys, was hoping to get some advice on my 2017 F32 build. I don’t have any plans to take it to the track anytime soon, so I’m really just trying to get better sound and a bit more power. Would the best way to do this be to get the MPE and a Stage 1 flash/piggyback tune? For context, I live in California and it’s my understanding that any bigger mods (catless/high flow DP, HPFP, etc.) wouldn’t pass smog. This will be my first experience with modding and I don’t want to have to deal with changing parts back to OEM when the time comes to smog, so I want to stick with the easy stuff for now. Any advice or build suggestions would be much appreciated. Thanks!
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09-09-2022, 02:01 PM	#3
midxotic Private First Class 199 Rep 195 Posts Drives: 2011 E90 M3 Join Date: Jul 2021 Location: New Jersey, USA iTrader: (0) Garage List 2018 BMW 340ix [9.50]	Here are some options: 1. MPPSK - M Performance Power and Sound Kit - Cat back exhaust with valves (quiet in comfort/eco and loud in sport/sport plus) and a mild engine tune similar to MHD/BM3 Stage 1 flash. This is expensive but does not void warranty. (about $3,000) 2. AWE or Dinan Midpipe and a Stage 1 tune with MHD or BM3. This will give you some more sound and still utilize the factory exhaust flap with the stock muffler. You can also get a dual resonator delete which does the same thing as the Dinan/AWE Midpipe and might be cheaper. (about $600-$700 for the midpipe and $500 for the tune; cost of dual resonator delete varies by exhaust shop) 3. Catback Exhaust and Stage 1 Tune. This is if you want more noise than option two. Some catback exhausts utilize the factory valve (AFE) and some do not (Dinan/AWE). If the valve is something you want to keep, I would make sure you pick the right catback or just stick with option 2. ($2000 for the catback, $500 for the tune)
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09-09-2022, 03:01 PM	#4
bmw.gp Enlisted Member 6 Rep 47 Posts Drives: 2017 BMW 440i Join Date: May 2022 Location: Los Angeles iTrader: (1) Garage List 2017 BMW 440i [0.00]	Thanks guys, this is great information. It sounds like option 2 is the most bang for your buck, but I’ll do some research on the sound difference between a res delete / midpipe and an upgraded axleback. I’m also considering just picking up a used MPE and a MHD/BM3 flash since the full MPPSK is so much more expensive and only gets you an increase of around 30hp (compared to BM3’s supposed 40-60hp increase on 91 octane). Last edited by bmw.gp; 09-09-2022 at 03:34 PM..
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