In a few years, I’m hoping to purchase a 340i with X-Drive, and I was just curious as to how you got the exhaust to burble and crackle when you take off the pedal. Although it would be wonderful, I don’t think I’d want to spend $4000 on an exhaust system; instead, I’d like to know how to get one in the first place. A few other posts suggested removing the resonators, and another suggested removing the mufflers. Although I don’t want it to be too loud, I do want it to crackle because I just adore that sound!
Has anyone ever heard the 340i’s standard exhaust? Is there a crackle? I’ve looked through a few movies, but they differ; some of them do and some don’t, leaving me quite perplexed.
The Z3’s stock exhaust blasts thanks to high-lift cams and a conical air filter. In addition, I use 97-99 RON fuel rather than 95. Additionally, it has roughly 30 bhp more horsepower than stock. Regarding the 340, I’m not sure, but I suppose you might obtain something comparable.
Unburned fuel that has reached the exhaust and is in contact with hot exhaust pops; therefore, the simplest solution is to run richer or overlap the timing. My new cams work effectively in this manner.
In my z3, the only change from factory is the removal of the muffler. With all the crackling and popping, I feel like a grating jerk. But the roaring straight six and the cracking when the throttle is released make it worthwhile.
How loud is the standard? Do you detect the burbles within the cabin? I was able to hear the MPPSK exhaust, but if I were going to spend that much money, I think I’d prefer to have an aftermarket exhaust because it will likely be a little louder and sound a little better. Although the M Performance exhaust is excellent, I think I could definitely find something better for the money. Have you driven the 340i? If true, how did it differ from the previous N55 (N54)?
EDIT: I’m still contemplating if I want the burbles and crackles in standard driving mode without the Sport+. I would like to hear the sound without using as much gas because I enjoy it so much. LOL
Simply removing the muffler from my Z3 and not even touching anything else causes it to pop and crackle. I’m not sure if it was tweaked at the factory to burble more than an ordinary M54 engine would, or what.
The secondary cats were straightpiped and sawed off. They are not sensor-monitored, thus there are no emissions or code violations. Finding a store to do it is the only difficult aspect.
Sport setting makes overrun more burbly and poppy by using a modified injection pattern. Activate the button.
Message me if you have any inquiries. Getting great results because this technique doesn’t interfere with the stock exhausts’ flapper valves.
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Air leaks at the point where the muffler(s) clamp to the header pipes, typically after they were removed and reinstalled, are the common cause of popping and minor backfiring. However, air leaks at the head join will quickly burn up the exhaust valves. Letting air in at the header pipe to the cylinder head may also cause backfiring. How may a cold air intake burn an exhaust valve? You might wonder what would happen, and the answer is that a small patch of cold air entering a very hot valve would cause a microscopic fracture that would eventually grow into a piece of the valve flying off.
What causes pops and bangs in cars?
Extra fuel that is introduced to the exhaust system heats up and ignites inside the exhaust rather than the combustion chamber.
Installing a decat or complete decat exhaust system will amplify the loudness. However, the ECU and the fueling of the car are the primary causes of pops and bangs.
How can I quickly make my 2019 430i’s exhaust generate popping or crackling noises?
Hello, I recently leased a brand-new 2019 BMW 430i, and I was wondering if there was a quick fix or something temporary I could do to make the exhaust on my car sound more like pops or crackles:P
I have Bimmercode, which I used to enable automatic folding mirrors. Is there anything I could set up in Bimmercode to “disable” the electronic shut-off device that prevents fuel from traveling to the exhaust?
(I’m not sure exactly what it is.)
When I floor it just before changing gears, when the RPM is at 4,000–5,000, that is the only time the exhaust makes a pleasant pop.
Can the exhaust be made to snap or crackle while driving or revving? I watched a video on how to do it, but it doesn’t seem to work for me. When I am at, say, 3000 RPM in second gear, if I let up on the gas, wait a second for the revs to drop, then press the gas slightly again, the car doesn’t make any noise and only slightly accelerates? Perhaps I’m doing it incorrectly…? That’s what the video advised you to do and demonstrated with a 328i as an example.
(This was previously posted in the N55 section, but I was advised it would be better placed here.)
You’re in the 2-series forum, to start. Second, flash tuning—not feature coding—determines how loud the exhaust “burbles” are. Although the majority of them are for 6-cylinder cars, there are flash songs that can accomplish this. For further information, visit the 3- and 4-series forums.
I believe installing a downpipe would be the easiest solution. It is also entirely reversible.
The muffler should be taken out as well, however that would require cutting the exhaust.
You’ll hear some pops and crackles with this. However, if that is insufficient, you must flash your ECU. It is not advised to do this with stock cats since you run the danger of hurting them.
Why do BMW exhaust pipes pop?
Technically speaking, the “pops” is truly an indication of poor tuning since it happens when additional, unburned fuel escapes the combustion chamber and enters the exhaust system, where it is heated and causes it to “pop,” occasionally even igniting with flames.
How can I louden the BMW exhaust?
- Get a more compact muffler. The smaller your muffler, the louder your automobile will be because they are made with loudness in mind.
- Place a specialist exhaust assembly in place. The most straightforward approach to increase your engine volume is to modify your exhaust system.
- Purchase a bigger downpipe. These increase the volume of your car by lowering the exhaust’s backpressure.
- Your exhaust system’s resonator has to be removed. This alters the tone of your car, causing it to make deeper sounds.
Just keep in mind that some counties and states have restrictions on how loud your car can be. Check your local laws such before making any alterations to your vehicle.
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How might the price of BMW shares rise?
On my 2018 M4, I’m currently using the factory exhaust. Is there a non-aftermarket or non-tuning technique to get some crackles and pops from the exhaust? I don’t want to ruin the tune’s warranty. The exhaust is now always in open mode because I already unplugged the valve switches, which has made it much more thrilling to listen to.
You might get 5% more crackles and pops with a full exhaust system, but not what you want.
According to what I understand, the comp pack gives you this because it is a slightly tweaked version of the standard m4? Or is there a different exhaust system being used?
With no tuning adjustments made, I inserted a single-pipe midpipe and valve controller, and it definitely introduced some faint pops and crackles that I believe were being muffled by the secondary cats. Not even close to what a song will buy you, but clearly more than stock.
When approaching an overpass, roll down the windows, select Sport Plus on the throttle response dial, shift into second gear, hold the engine speed at roughly 5,000 rpm, floor it under the bridge, and release the gas as you are about to cross the bridge. A bang, bark, pop, or whatever you want to name it, occurs.
There are a few quiet pops and cracks that would sound louder with a different exhaust, but the standard tune does not produce overrun burbles.
Yes, when I came out of a bend in second gear, I chirped the tires. As I let off the gas, the car’s exhaust gave a loud pop. In the parking lot, I overheard a young child squeal.
What causes BMW engines to pop?
It can be scary if you hear popping coming from your engine. This noise in your BMW could be caused by a number of different things. These include soiled spark plugs, old or worn-out air filters, and clogged fuel filters. A clog in the catalytic converter or an issue with the ignition could be more serious problems.
A car’s air filter gives the engine the oxygen it needs for the combustion process. Insects, dirt, and other particles that can impede the engine from receiving oxygen are also filtered out by it. It assists in supplying a good blend of fuel and air to keep your BMW running smoothly.
The performance of a car also depends on the spark plugs. They supply the spark necessary for the air and fuel mixture from the air filter to ignite, assisting the engine in producing the necessary power to drive your BMW. A spark plug makes a popping sound when it is old or worn out because it cannot function at its best.
The fuel filter in your BMW is in charge of preventing dirt and other particles from getting into the fuel, much like an air filter does. These particles can enter the fuel and cause harm if a fuel filter becomes clogged. Even the smallest particle can be disastrous if it enters the engine because it can harm the BMW’s engine and other systems.
Why does the BMW exhaust flap exist?
I only have the right tail pipe open when I start my car. Both tail pipes eventually become open. That would imply that the flap is indeed open, however despite having both tailpipes open, it is quieter, according to the BMS description. I’m quite unsure if the flap controls anything other than the tail pipe in the muffler, though.
When both tailpipes are open, the engine is quieter since the wastegate has closed (it is open during initial start-up for about 20 seconds) and all of the exhaust is running into the turbo, which muffles the sound. The exhaust flap’s sole purpose is to lessen exhaust noise during cold starts and while driving at highway speeds. With an MPE or other aftermarket exhaust, it is more obvious.