Bmw muffler delete

Bmw muffler delete DEFAULT
Measurements were taken outside, approximately 1 meter back, between the two mufflers. All measurements are in decibels (dB).

Outside Measurements
Cold start: 95 db at approx RPM idle
Warm start: 85 db at approx RPM idle

Interior Measurements
Warm idle: 55 db
mph Highway cruise (when not droning): db
mpg highway cruise (when droning): db
Peak drone, driving up-hill partial throttle around RPM: 70 db
Max interior sound volume under full throttle: 72 db

Again, my car is a manual transmission (6MT) i x-Drive Sedan (e90 AWD). My only mod is muffler delete, so the stock resonator and cats are all still in place.

The cold start measured louder than I thought it would, and the inside measurements show how great the stock acoustical treatments are ( db). I've seen people physically jump and/or turn around when my cars starts up, warm, so I knew it was somewhat loud. I will have my wife start the car and take peak measurements soon.

As you can see, the drone adds between decibels (db) during highway cruising, so it's very noticeable when it kicks in and starts resonating. For reference, every 3 db represents a doubling of acoustic pressure (loudness). However, with that said, the overall interior sound level stays pretty low overall (70 db or less), especially for a performance car. Thus, it's not really all that loud at all in terms of absolute measurement. How we interpret it subjectively is going to differ vastly, but I wanted to give people some facts to mull over.

Unfortunately, I didn't have my sound level meter when my car was stock.
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Quote:

Originally Posted by Bam

Wouldn't the m exhaust work?

Yes it would. Fits like a glove. Only thing you need to do is extend the hangers about a half inch
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If you are on a tight budget, don't mod because a tight budget usually results in cheap looking and sounding mods.

I personally don't like muffler deletes, don't like the sound. Get a nice aftermarket exhaust for about $ more, it won't make your $ BMW sound like a $ shitbox.

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VRSF Stainless Steel Muffler Delete for BMW i/xi/is E90/E91/E92/E93 N54 & N55

VRSF Stainless Steel Muffler Delete

For your &#; BMW i, xi and is with the N54 & N55 Engine

We are proud to introduce our VRSF Stainless Steel Race Muffler Delete for the E90/E91/E92/E93 BMW i/xi/is. This muffler delete is one of the most cost effective exhaust modifications available for your N54 & N55! By eliminating the incredibly restrictive OEM muffler, back pressure is reduced significantly which results in faster spool, an increase in power & a more aggressive exhaust note.

This product was designed and engineered for to fit on both the N54 & N54 version of the i and is in both RWD & AWD configurations. The difference in both power and sound are be noticeable the moment it is installed!  Please note that cutting of the factory exhaust is required and that we include everything necessary for installation including installation hardware. Please note that these tips do not require install hardware.

Features:

  • Hand made from mandrel bent, tig welded &#; grade stainless steel.
  • Polished 90mm tips included.
  • Smooth radius bends to decrease turbulence and increase flow.
  • Quicker spool and improved exhaust note.
  • Fits RHD and LHD models with no modification necessary.
  • VRSF Lifetime Warranty against defects and fitment.

This item fits the following BMWs:
&#;  E90/E91/E92/E93 BMW i, xi, is N54 & N55

Note:
 Fits both Left Hand Drive & Right Hand Drive Models

Weight22 lbs
Dimensions26 × 12 × 6 in
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Delete bmw muffler

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Quote:

Originally Posted by xenoz

Quote:

Originally Posted by Bmw doublesView Post

I'll agrees here. I had a muffler delete that lasted less than a day. My recommendation is do I like I did, straight through with open ended j pipes. I'll try and make a video. It's the best of both worlds, delete and tuned sounding exhaust without the freeway drone.

Or if you have the budget for exhaust then yes M5 exhaust conversion.

wanna hear them j-pipes
Ok here is a whatever demo because I had no one to help me record it(poor me). Top of a garage parking lot so not much room to open it up. It's a moderate tone, very mature and fitting for the 5 series. Small amount of throatiness and turbos sounding all whistley due to tune. Sounds wicket in tunnels and garages, passing cars and walls. Very small audible drone at and gets loud on WOT. There used to be no drone when the j pipes were capped.

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BMW F30 MUFFLER DELETE 328I RWD (STOCK BACKFIRE) N20

Thread: muffler delete do or don't???

Ive had my muffler delete for around 8 months now and let me tell you, i have no regrets. If you want a muffler delete it means that you want your car to be loud, so obviously all these comments about it being loud don't effect your decision. As for those who say its too loud and gets annoying, well its all due to their own opinions. Personally i like it because its deep rumble makes the engine sound beast, backfire is nice when you're slowing down, and it makes burnouts that much better.

Its all down to what you want, i say do it. Cost is cheap, maybe $ with tips. I got mine done for $85 because the shop didn't have the tips i wanted, But I'm still looking.

Maybe if you ask nice enough and stay far away from my mom ill post a video of the sound later on.


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