JB4 on stock 340i sound? Deciding on exhaust thread

Rob340i · 03-08-2018, 02:55 AM

Considering a JB4 for my 2018 340i. I fully understand the JB4 is not built for increasing sound, but is the sound increased in sport mode or any mode for that matter on a completly stock 340i. I am planning the JB4 in the future but the current stock exhaust seems too quite and was hoping it may increase the sound. Is it a difference like going from comfort to sport? Even just a minor amount would help. Also hoping after its fully broken in it will increase. I am really hesitant to put a catback right now... though I am ok with doing JB4 sooner. Any advice?

wassy4 · 03-08-2018, 04:24 AM

Quote:

Originally Posted by Rob340i

Considering a JB4 for my 2018 340i. I fully understand the JB4 is not built for increasing sound, but is the sound increased in sport mode or any mode for that matter on a completly stock 340i. I am planning the JB4 in the future but the current stock exhaust seems too quite and was hoping it may increase the sound. Is it a difference like going from comfort to sport? Even just a minor amount would help. Also hoping after its fully broken in it will increase. I am really hesitant to put a catback right now... though I am ok with doing JB4 sooner. Any advice?

No, it won't increase exhaust sound. Running the extra psi will increase your intake sound if you get an aftermarket intake but not by much.

The stock exhaust note will not increase regardless of tune or not. Just spring for the catback or start with a resonator delete. Catbacks on this car are not very loud at all. They're all fairly mild yet aggressive. Like 3/10 driving around town and 6/10 when you get on it. I highly recommend the AWE Tuning exhaust although a resonator and/or muffler delete is much cheaper and has 90% of the sound. Car will not be obnoxiously loud or drone with any catback option you choose.

Modding my exhaust was the best decision I've made for this car and I'd take it over any other mod I've done to the car.

Rob340i · 03-08-2018, 04:36 AM

Ok the only reason i hesitate is i dont want it too loud, and i dont want to lose the valve. I would like a deeper low tone maybe just a few decibles louder than stock. I want to put it in sport mode when i want to hear it and tone it back to comfort/eco pro when i dont.

riskmaker76 · 03-08-2018, 07:56 AM

The M Performance muffler is the quietest solution but will increase volume all the time - not by much though... just a little. LIttle more in sport since the valve opens a little more (not a huge difference honestly from comfort though)

Resonator Delete you will hate -- its like having the valve all the time in all modes.

The MPPSK is the best of both worlds.. bonus is +2 PSI of boost (20 - 30 HP) Comfort is stock quiet (little noisier when you gun it)... but in Sportsounds like a monster...

The JB4 has nothing to do with sound. Boost has nothing to do with exhaust noise.

Quote:

Originally Posted by Rob340i

Ok the only reason i hesitate is i dont want it too loud, and i dont want to lose the valve. I would like a deeper low tone maybe just a few decibles louder than stock. I want to put it in sport mode when i want to hear it and tone it back to comfort/eco pro when i dont.

Rob340i · 03-08-2018, 02:43 PM

Really leaning hard towards MPPSK

wassy4 · 03-08-2018, 03:31 PM

Quote:

Originally Posted by Rob340i

Really leaning hard towards MPPSK

It's not worth it unless you have it port installed. JB4 and a resonator delete or just a downpipe will give you much more power and a nice sound that's not too loud and allows you to retain valve.

Beek · 03-08-2018, 03:37 PM

Quote:

Originally Posted by Rob340i

Really leaning hard towards MPPSK

I don't think you'd regret getting it, I have not heard anyone who did say they wish they hadn't. The exhaust can be quiet when required but I run in Sport all the time and only offend people when I want to.

Extra HP and TRQ are a noticeable plus. It's not the cheapest route to better sound or power but for me the Warranty and peace of mind is well worth the money.

Mike@N54Tuning.com · 03-08-2018, 09:09 PM

JB4 won't have any impact on exhaust tone / overall loudness..

Like mentioned above intake noise if you have an open element will be increased as you are running more boost.

Catless downpipes with stock exhaust sound awesome in my books.

Mike

riskmaker76 · 03-09-2018, 06:24 AM

It’s the only solution that gives you the best of all worlds..

Everything else is either noise all the time or waste of money...

Mppsk is very loud imo when the valve is open... so keep that in mind

But I just love it honestly

Quote:

Originally Posted by Rob340i

Really leaning hard towards MPPSK

Rob340i · 03-09-2018, 09:59 AM

Then again Remus cat back and later jb4 sounds better cost wise and would not be a bad setup either. Wondering whether the remus performance mid pipe is a straight through no resonator or is it a high flow resonator/cat?

riskmaker76 · 03-09-2018, 10:12 AM

In fact if I were to do it all over again - yes... JB4 plus cat back plus resonator delete is the most cost effective option and will sound just as good as the MPPSK and will perform even better..

But keep in mind - you just said a few posts ago you didnt want loud. The moment you remove the resonator and add a catback it will be loud all the time.. the valve is useless in that respect. Honeslty there is no other solution that is the MPPSK - its costly but a fantastic solution for the lazy that doesnt want loud all the time...

I have JB4 ontop the MPPSK for the added boost..

Quote:

Originally Posted by Rob340i

Then again Remus cat back and later jb4 sounds better cost wise and would not be a bad setup either. Wondering whether the remus performance mid pipe is a straight through no resonator or is it a high flow resonator/cat?

wassy4 · 03-09-2018, 12:11 PM

Quote:

Originally Posted by riskmaker76

In fact if I were to do it all over again - yes... JB4 plus cat back plus resonator delete is the most cost effective option and will sound just as good as the MPPSK and will perform even better..

But keep in mind - you just said a few posts ago you didnt want loud. The moment you remove the resonator and add a catback it will be loud all the time.. the valve is useless in that respect. Honeslty there is no other solution that is the MPPSK - its costly but a fantastic solution for the lazy that doesnt want loud all the time...

I have JB4 ontop the MPPSK for the added boost..

Quote:

Originally Posted by Rob340i

Then again Remus cat back and later jb4 sounds better cost wise and would not be a bad setup either. Wondering whether the remus performance mid pipe is a straight through no resonator or is it a high flow resonator/cat?

A catback even without valve is not loud at all on this car. It's fairly quiet around town but opens up at WOT. It still retains the dual personality of a valve. Just doing a resonator delete is much cheaper and will give him the sound he is looking for.

riskmaker76 · 03-09-2018, 01:26 PM

cat back is a waste of money IMO without the resonator delete.. and

comfort mode even WOT doesnt sound anywhere near what an open valve on the MPPSK sounds like - cant even compare the two

MPPSK essentially is a resonator and exhaust delete. When the valve opens exhaust is routed around the muffler and becomes pretty much an open straight back pipe with the resonator is removed. Its far far louder then WOT in comfort mode.. In comfort mode the exhaust is routed into the Muffler which probably is a quieter one then the stock... Comfort on MPPSK is no louder then comfort on a non mppsk car. WOT - I bet is similar too..

Quote:

Originally Posted by wassy4

A catback even without valve is not loud at all on this car. It's fairly quiet around town but opens up at WOT. It still retains the dual personality of a valve. Just doing a resonator delete is much cheaper and will give him the sound he is looking for.

wassy4 · 03-09-2018, 01:29 PM

Quote:

Originally Posted by riskmaker76

cat back is a waste of money IMO without the resonator delete.. and

comfort mode even WOT doesnt sound anywhere near what an open valve on the MPPSK sounds like - cant even compare the two

MPPSK essentially is a resonator and exhaust delete. When the valve opens exhaust is routed around the muffler and becomes pretty much an open straight back pipe with the resonator is removed. Its far far louder then WOT in comfort mode.. In comfort mode the exhaust is routed into the Muffler which probably is a quieter one then the stock... Comfort on MPPSK is no louder then comfort on a non mppsk car. WOT - I bet is similar too..

Quote:

Originally Posted by wassy4

A catback even without valve is not loud at all on this car. It's fairly quiet around town but opens up at WOT. It still retains the dual personality of a valve. Just doing a resonator delete is much cheaper and will give him the sound he is looking for.

I understand that a catback is basically a res delete and smaller muffler, I was saying he could skip getting a brand name system and just do a custom delete for much cheaper. I'm confused by what you mean in your second statement though. I used to have just the AWE catback (resonator delete and small ass muffler) and it was just as loud if not louder than MPPSK both in comfort and sport. MPPSK might check all of his boxes but it's way too expensive for what you get

riskmaker76 · 03-09-2018, 01:38 PM

Sorry... I meant axle back is a waste of money - which caused the confusion..

The problem is being able to control the sound - if that is not a priority then I wholly agree Cat back plus JB4 is the way to go.

Quote:

Originally Posted by wassy4

I understand that a catback is basically a res delete and smaller muffler, I was saying he could skip getting a brand name system and just do a custom delete for much cheaper. I'm confused by what you mean in your second statement though. I used to have just the AWE catback (resonator delete and small ass muffler) and it was just as loud if not louder than MPPSK both in comfort and sport. MPPSK might check all of his boxes but it's way too expensive for what you get

wassy4 · 03-09-2018, 01:39 PM

Quote:

Originally Posted by riskmaker76

Sorry... I meant axle back is a waste of money - which caused the confusion..

The problem is being able to control the sound - if that is not a priority then I wholly agree Cat back plus JB4 is the way to go.

Quote:

Originally Posted by wassy4

I understand that a catback is basically a res delete and smaller muffler, I was saying he could skip getting a brand name system and just do a custom delete for much cheaper. I'm confused by what you mean in your second statement though. I used to have just the AWE catback (resonator delete and small ass muffler) and it was just as loud if not louder than MPPSK both in comfort and sport. MPPSK might check all of his boxes but it's way too expensive for what you get

Ahh ok lol, yeah I agree. Axlebacks are definitely not worth it. There are non-MPPSK that retain the valve such as Remus which sound really good. I do think MPPSK sounds nuts but too pricy for what t is.

M2Rush · 03-09-2018, 01:49 PM

Many have said a tune wouldn't change the sound but wouldn't getting Bootmod3 with a burble tune change the stock exhaust output sounds as well and also provide a nice boost? Isn't this a better option over MPPSK unless warranties an issue? A lot cheaper and you can even get an aftermarket carbon fiber intake and still be saving.

riskmaker76 · 03-09-2018, 03:14 PM

Not relevant to this discussion we are talking B58 motors not N55..

Quote:

Originally Posted by M2Rush

Many have said a tune wouldn't change the sound but wouldn't getting Bootmod3 with a burble tune change the stock exhaust output sounds as well and also provide a nice boost? Isn't this a better option over MPPSK unless warranties an issue? A lot cheaper and you can even get an aftermarket carbon fiber intake and still be saving.

M2Rush · 03-09-2018, 08:46 PM

Quote:

Originally Posted by riskmaker76

Not relevant to this discussion we are talking B58 motors not N55..

My bad...

Rob340i · 03-10-2018, 04:33 AM

So remus with valve will probably be the way i will go. Does AWE still keep the valve?Also the awe with resonator delete i think would drone too much. So thats out does the remus have a resonator? so should i do remus cat back or awe without mid pipe res delete?
What about AFE?

riskmaker76 · 03-10-2018, 05:52 AM

Anything without a resonator delete is a waste... just an axle back then

Remus keeps the original valve... that means it will function like a stock exhaust... just keep that in mind..

Rob340i · 03-10-2018, 05:57 AM

Quote:

Originally Posted by riskmaker76

Anything without a resonator delete is a waste... just an axle back then

Remus keeps the original valve... that means it will function like a stock exhaust... just keep that in mind..

Does Remus have resonator delete it does not mention one.

And because it keeps its original valve and funtions like stock thats good or bad what are u getting at?

What about just doing remus mid pipe only will it increase sound from stock exhaust without drone?

03-08-2018, 02:55 AM	#1
Rob340i Sergeant First Class 87 Rep 150 Posts Drives: 340i M Sport Join Date: Nov 2017 Location: Italy iTrader: (0)	JB4 on stock 340i sound? Deciding on exhaust thread Considering a JB4 for my 2018 340i. I fully understand the JB4 is not built for increasing sound, but is the sound increased in sport mode or any mode for that matter on a completly stock 340i. I am planning the JB4 in the future but the current stock exhaust seems too quite and was hoping it may increase the sound. Is it a difference like going from comfort to sport? Even just a minor amount would help. Also hoping after its fully broken in it will increase. I am really hesitant to put a catback right now... though I am ok with doing JB4 sooner. Any advice? Last edited by Rob340i; 03-12-2018 at 03:39 PM..
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03-08-2018, 04:36 AM	#3
Rob340i Sergeant First Class 87 Rep 150 Posts Drives: 340i M Sport Join Date: Nov 2017 Location: Italy iTrader: (0)	Ok the only reason i hesitate is i dont want it too loud, and i dont want to lose the valve. I would like a deeper low tone maybe just a few decibles louder than stock. I want to put it in sport mode when i want to hear it and tone it back to comfort/eco pro when i dont.
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03-08-2018, 02:43 PM	#5
Rob340i Sergeant First Class 87 Rep 150 Posts Drives: 340i M Sport Join Date: Nov 2017 Location: Italy iTrader: (0)	Really leaning hard towards MPPSK
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03-08-2018, 09:09 PM	#8
Mike@N54Tuning.com BimmerPost Supporting Vendor 4927 Rep 116,006 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	JB4 won't have any impact on exhaust tone / overall loudness.. Like mentioned above intake noise if you have an open element will be increased as you are running more boost. Catless downpipes with stock exhaust sound awesome in my books. Mike
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03-09-2018, 09:59 AM	#10
Rob340i Sergeant First Class 87 Rep 150 Posts Drives: 340i M Sport Join Date: Nov 2017 Location: Italy iTrader: (0)	Then again Remus cat back and later jb4 sounds better cost wise and would not be a bad setup either. Wondering whether the remus performance mid pipe is a straight through no resonator or is it a high flow resonator/cat?
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03-09-2018, 01:49 PM	#17
M2Rush First Lieutenant 83 Rep 348 Posts Drives: 2014 BSM 335i x-drive Join Date: Aug 2017 Location: The 6 iTrader: (1)	Many have said a tune wouldn't change the sound but wouldn't getting Bootmod3 with a burble tune change the stock exhaust output sounds as well and also provide a nice boost? Isn't this a better option over MPPSK unless warranties an issue? A lot cheaper and you can even get an aftermarket carbon fiber intake and still be saving.
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03-10-2018, 04:33 AM	#20
Rob340i Sergeant First Class 87 Rep 150 Posts Drives: 340i M Sport Join Date: Nov 2017 Location: Italy iTrader: (0)	So remus with valve will probably be the way i will go. Does AWE still keep the valve?Also the awe with resonator delete i think would drone too much. So thats out does the remus have a resonator? so should i do remus cat back or awe without mid pipe res delete? What about AFE? Last edited by Rob340i; 03-10-2018 at 05:00 AM..
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03-10-2018, 05:52 AM	#21
riskmaker76 Lieutenant 126 Rep 484 Posts Drives: 440 xi MPPSK JB4 Join Date: Aug 2016 Location: Socialist People's State of NY - Long Island, NY iTrader: (0)	Anything without a resonator delete is a waste... just an axle back then Remus keeps the original valve... that means it will function like a stock exhaust... just keep that in mind..
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