[evil_scooby]

Ive just sold my Audi RS3 saloon and looking for a replacement. Such a great all rounder.
m340i xdrive seemed like a good replacement with its new tech and similiar ish power but after my test drive today im quite torn. It was a nice car but a lot quieter than I thought compared to the youtube videos I watched, and wasnt quite as fast as I had thought it might feel.

Are the newer cars quieter ? Reviews on youtube had pops and bangs and you could hear the exhaust note change outside when you changed to sport but I didnt hear any difference when changing and standing outside car.

Are there are tunes owners are doing to make them a bit more fun or little louder. Ive only really found tuning boxes, no remaps. Ive seen reviews of new supra getting a decat and a remap and jumping 100bhp so was hoping something similiar for this engine?

I need to decide tonight what to do on the car in question.
Top 3 replacements I thought are m340i, Audi RSQ3 sportaback, Tesla model3 performance.

Did anyone jump from another fast car in the UK and still enjoy the m340i?
I lost so much money on a 335d a few years ago and never bonded with it and just nervous of making similair mistake, but strugling for something that is better than rs3 without doing silly monthly payments in this economy.

HELP!

[Burrcold]

Honestly if you are coming from an RS3, the M340i will be just as fast (may not feel it because of how smooth it is). But the tech and luxury is way better, albeit in a larger size. The RS3 is more nimble and sounds better (especially in the UK since you can't get the M Performance Exhaust from your dealerships and it's hard to beat the 5 cyl sound, which really could be a deal breaker. Other than that, the M340i ticks more boxes for a very fast, good looking, and luxurious compact(ish) sports sedan/saloon. Have you test driven the C43? Pretty similar in a lot of ways to the M340i but is definitely a more harsh ride (not good for the UK roads).

[evil_scooby]

Originally Posted by Burrcold

Honestly if you are coming from an RS3, the M340i will be just as fast (may not feel it because of how smooth it is). But the tech and luxury is way better, albeit in a larger size. The RS3 is more nimble and sounds better (especially in the UK since you can't get the M Performance Exhaust from your dealerships and it's hard to beat the 5 cyl sound, which really could be a deal breaker. Other than that, the M340i ticks more boxes for a very fast, good looking, and luxurious compact(ish) sports sedan/saloon. Have you test driven the C43? Pretty similar in a lot of ways to the M340i but is definitely a more harsh ride (not good for the UK roads).

thats good to hear. Ive had S4 and RS4, and 335D before but todays test drive just felt missing something, which may of been noise.
Annoyingly my new phone (note20) doesnt fit in the wirelss charger, and the heads up display made me feel a bit ill.

Had read some reviews son c45 but never seen one in the flesh. Was tempt4ed by the amg noise but something about merc just never seems to flat my boat

[Drew474]

The exhaust note is muted due to the regulations in Europe. Unless you carry out some mods.

It’s a great car though, very quick and good fun when you want it to be.

[evil_scooby]

Originally Posted by Drew474

The exhaust note is muted due to the regulations in Europe. Unless you carry out some mods.

It’s a great car though, very quick and good fun when you want it to be.

Thats a shame :-( wonder what mods I need in uk

Ive ordered one today as Audi werent bothering to get back to me about the RS, so thought they dont deserve the business when the bmw guy was super nice and helpful

[Don76]

Welcome to the world of OPF. Those darn pesky filters are ruining the sound of petrol cars in Europe.

Unfortunately it's not as simple as just changing the exhaust. You'll also need a remap to ignore the cel light and avoid limp mode.

The new RS3 is way quieter than the older model too. All thanks to those clever folks in Brussels

[Alanli722]

I've not come from any fast cars before so can't really compare it to anything else. But it is quite hard to hear much from the inside even with the windows open.

Evolve and DMS definitely do remaps for the car which might involve bench unlocking the DME depending on the software of the car. Bootmod3 could be an option if you DME is unlocked as it has options for burbles and pops.

Exhaust wise ACS, Bastuck and Eisenmann (stonesexhaust do one I think, not sure about for the UK car) do exhausts for the car though they are quite pricey and are only the rear section so still will have the OPF. Your could get a decat/sports cat downpipe or get someone to do an OPF delete.

I've been window shopping however I'm insured with BMW insurance and they basically don't allow any modifications whatsoever won't even allow ACS springs, so have to hold off for at least a year.

[srbs73]

I think there are a few pops and bangs but it’s hard to hear them. I think the only time I hear them clearly is when I’ve stopped at the petrol station and hit the Sport button to open the valve before starting the engine. When the engine is warm, it can be quite loud

[evil_scooby]

Originally Posted by srbs73

I think there are a few pops and bangs but it’s hard to hear them. I think the only time I hear them clearly is when I’ve stopped at the petrol station and hit the Sport button to open the valve before starting the engine. When the engine is warm, it can be quite loud

That's good to hear there are still there a little going to be a long wait for the car while looking for bits

[Carbon dude]

I came across a video where a M340i owner in Europe had a software update in march ish 2020. Part of the update was for the opf and it has reduced the burbles. Not sure how as the opf is a physical part. Can't seem to import the video to here on my phone but the YouTube name is Jan Es.

[DenHaag3er]

5 minute job to make sure the valve is open all the time. Drive it in sport plus all the time or individual. Make sure you select this before starting the engine.
Cold starts are very loud. Burbles will happen when you give it a small touch of gas and lift off.

[Carbon dude]

The YouTuber did it in sport plus mode and there was a noticable decrease in burbles since the update. I'm not sure how a software update would do that.

[Beemer5to3]

Originally Posted by Gary1985

The YouTuber did it in sport plus mode and there was a noticable decrease in burbles since the update. I'm not sure how a software update would do that.

Burbles / pops are just a result of software on modern cars. They're artificially put in by the ECU to add fuel on the overrun to make pops & bangs. It will have no doubt been written out to protect the OPF.

[Oksana]

EDIT: I’ve moved this to a new thread.

Advanced apologies... I’m going to hijack this thread a little..
Can anyone compare tyre roar/ noise in the m340i to what it’s like in the f31 340i?
I have a f31 340i but find the tyre roar in the cabin unbearable and wondered if anyone has experience of both and could advise if the m340i is better in this area?
It’s a very subjective topic and I’ve read plenty of posts commenting how quiet the g20 cabin is, but I’ve also read the same about the f30, so looking for a direct comparison rather than ‘its quiet’ if anyone is able to help?!

Thank you thank you 🙏

[srbs73]

Originally Posted by Oksana

EDIT: I’ve moved this to a new thread.

Advanced apologies... I’m going to hijack this thread a little..
Can anyone compare tyre roar/ noise in the m340i to what it’s like in the f31 340i?
I have a f31 340i but find the tyre roar in the cabin unbearable and wondered if anyone has experience of both and could advise if the m340i is better in this area?
It’s a very subjective topic and I’ve read plenty of posts commenting how quiet the g20 cabin is, but I’ve also read the same about the f30, so looking for a direct comparison rather than ‘its quiet’ if anyone is able to help?!

Thank you thank you 🙏

I can’t compare to the F31, but I came from a 2016 Q7 with air suspension, non-run flats and double glazed glass. I was worried about the ride being too firm and cabin noise. Whilst the ride is a bit firmer as you’d expect, it comfort mode it’s really comfortable. Cabin noise is very good. I’d probably need to drive them back to back to how close but I’m very happy with the G21. The engine more than makes up for the small difference.

[Oksana]

Originally Posted by srbs73

I can’t compare to the F31, but I came from a 2016 Q7 with air suspension, non-run flats and double glazed glass. I was worried about the ride being too firm and cabin noise. Whilst the ride is a bit firmer as you’d expect, it comfort mode it’s really comfortable. Cabin noise is very good. I’d probably need to drive them back to back to how close but I’m very happy with the G21. The engine more than makes up for the small difference.

Wow! Are you saying the tyre noise in the M340i is no more noisy than the Q7??

[JNW1]

Originally Posted by Oksana

EDIT: I’ve moved this to a new thread.

Advanced apologies... I’m going to hijack this thread a little..
Can anyone compare tyre roar/ noise in the m340i to what it’s like in the f31 340i?
I have a f31 340i but find the tyre roar in the cabin unbearable and wondered if anyone has experience of both and could advise if the m340i is better in this area?
It’s a very subjective topic and I’ve read plenty of posts commenting how quiet the g20 cabin is, but I’ve also read the same about the f30, so looking for a direct comparison rather than ‘its quiet’ if anyone is able to help?!

Thank you thank you 🙏

I've moved from an F31 335d to a G21 M340i and personally I'd say one of the biggest differences between the two is the improved level of refinement in the newer car. Some of that is perhaps engine related in my case because, good as the 6-pot diesel was, it's no match for the smoother B58; however, I'd actually say the most notable difference of all is probably road noise (which is significantly lower in the G21 IMO). I should also add that my F31 was on 18" wheels whereas the G21 is on 19's but despite that for me the M340i is easily the smoother, quieter, car.

As ever with these things, though, it's best to have a test drive yourself and make up your own mind - my refined could be someone else's harsh and noisy!

[Oksana]

Originally Posted by JNW1

I've moved from an F31 335d to a G21 M340i and personally I'd say one of the biggest differences between the two is the improved level of refinement in the newer car. Some of that is perhaps engine related in my case because, good as the 6-pot diesel was, it's no match for the smoother B58; however, I'd actually say the most notable difference of all is probably road noise (which is significantly lower in the G21 IMO). I should also add that my F31 was on 18" wheels whereas the G21 is on 19's but despite that for me the M340i is easily the smoother, quieter, car.

As ever with these things, though, it's best to have a test drive yourself and make up your own mind - my refined could be someone else's harsh and noisy!

That is really helpful thank you 🙏
I will get myself a test drive:-)

[blaz]

DMS offer exhauset tuning
https://www.dmsautomotive.com/car/bm...ries-g20-2019/

UK performance exhausts seem to have dried up due to OPF. ACS is over £3k.

[DenHaag3er]

Originally Posted by Beemer5to3

Burbles / pops are just a result of software on modern cars. They're artificially put in by the ECU to add fuel on the overrun to make pops & bangs. It will have no doubt been written out to protect the OPF.

The changed the software due to EU noise regulations unfortunately.

[srbs73]

Originally Posted by Oksana

Wow! Are you saying the tyre noise in the M340i is no more noisy than the Q7??

I would have to drive them back to back. My guess would be that on average to good roads, it would be hard to tell. On poor quality roads the Q7 would probably be noticably better - but my Q7 also had the 20” wheels and not the 21 or 22” that many s-line models have.

The reason I chose that config on the Q7 was because the car before was a 2011 X5 M Sport. The ride was so harsh, particularly in the back that it made the kids sick!

I was concerned about going back to a BMW, especially m sport but after 3 months I am very happy with the switch.

[john!smith]

it is not the opf making the car silent... it is the software bmw updated.

you can check and see how my opf model sounds.
i did a mhd tune and installed a downpipe

i have uploaded clips with and without downpipe.

if you want to see or hear more, just check the other videos on my channel