[xBASSxHEADxBIMMERx]

So I've been reading on the forums that you can "delete" the muffler on my 2006 330i, but what exactly does that mean? Do i just hoist the car up and simply remove it? Or what do I have to do? Sorry if it's dumb but it's my first Bimmer.

[idrift4wd]

you have muffles on your car, you would need to cut those off and replace it with some sort of pipes. so it terms will be a straight pipe from the cats

i've heard the muffler delete in person on a 330 and i highly recommend it

[username604]

its the same idea for any car, nothing specially related to bmw's

[xBASSxHEADxBIMMERx]

Ok i think I get it. Im looking to buying a system from a member on here and his comes with intake, headers, and full exhaust. And while it does sound tempting, I'm also just trying to think about money. Thanks for the insight guys, big help.

[Verbiage]

Muffler delete is the easiest way to modify your exhaust lol. I hear it also improves your fuel economy. Or something.

[FVM3]

sounds better but drone in low rpm

[Tj Hunter]

Originally Posted by christopherchenm

sounds better but drone in low rpm

If you do just a muffler delete withOUT removing your resonators you WILL NOT get drone, if do a custom cat back without resonators you will get drone.

[LaLakers91tc]

Originally Posted by xBASSxHEADxBIMMERx

Ok i think I get it. Im looking to buying a system from a member on here and his comes with intake, headers, and full exhaust. And while it does sound tempting, I'm also just trying to think about money. Thanks for the insight guys, big help.

Do a true setup if you can afford it, muffler delete is nice if you are low on money, but a proper setup will have a better, more refined sound, and you won't lose as much low end torque

Originally Posted by Bavarian III

Muffler delete is the easiest way to modify your exhaust lol. I hear it also improves your fuel economy. Or something.

any exhaust will make your fuel economy dip because you will want to rev it more to hear it sing! but I doubt it will make much a difference on fuel economy other than that

[nam71594]

its exactly what you said, get the car ligted, cut off the mufflers, and put some pipes in its place, if you want it to look good, then get some tips too. if you remove muffler, highly recommend removing the resonator and replace it with an X pipe. sounds epic!

[guerilla twang]

Originally Posted by LaLakers91tc

and you won't lose as much low end torque

Where's your proof of this torque loss? I feel nothing of the sort.

[psre08]

Dunno about the US, but in Canada if you're caught without a muffler it's bad news.

Best to just delete your resonators and get a sports muffler.

[sk8board511]

http://www.e90post.com/forums/showthread.php?t=491246 check out this link he and i just did this and it sounds great no "noticable" torque of power loss

[slim_e90]

I felt compelled to reply. I had it done and in24hrs I went back to stock until I do it right. It sounded okay and no drone whatsoever. But honestly this mod is for cars that don't have the level of class a 3er has in my opinion.

[3002 tii]

it literally means cutting off your mufflers and sticking on longer piping with new tips. personally not a fan of them.

[SR|RED]

I've done the delete as well. You really can't go wrong with it. Tips and someone to do the pipe work... It put me back maybe $150. It sounds better, and there is no droning.

In cabin it's very quiet, which has left me considering removing the resonators or jumping on some headers. That said, I've heard the car from outside and it sounds fantastic at high revs.

In the summer with the windows down it's a very satisfying sound. Just go for it, you're out maybe $150 if you don't like it... It's peas compared to a K you might end up spending for a full exhaust system.

At this point the only thing that would ever make me reconsider the mod is hearing another E90 with something that sounds amazing... Everyone and their dog drives an E90 where I live lol, but very few are modded, I haven't seen a single one not running stock exhaust.

[SR|RED]

Originally Posted by slim_e90

I felt compelled to reply. I had it done and in24hrs I went back to stock until I do it right. It sounded okay and no drone whatsoever. But honestly this mod is for cars that don't have the level of class a 3er has in my opinion.

Yes to Slim_e90's point, it does raw out the car a bit. Yes the 3 is supposed to be a bit more classy and the new exhaust note doesn't exactly suit the car, but as a driver I like my driving experience to be a bit more raw.

My buddy rocks in IS300 with an HKS exhaust and headers. This setup sounds right into the cabin and I love driving it. I feel a lot more connected to what the engine is doing and there's just something so satisfying about putting your foot down and having that symphony of manly testosterone fill your ears.

[PiZauL]

My friend has a muffler delete and it's too loud IMO. I went with a aftermarket muffler and resonator delete route when I had my 325 and it had a nice aggressive clean tone. I see your in D.C, I listed my muffler for sale, lmk if you'd be interested

http://www.e90post.com/forums/showthread.php?t=493537

[LaLakers91tc]

Originally Posted by guerilla twang

Where's your proof of this torque loss? I feel nothing of the sort.

I have no dyno proof, but the loss in backpressure should reduce low end torque in the car

[shazzy04]

Ive done just the muffler and kept the resonator. I like the way it sounds. not too loud imo

[Wlew]

dont do a muffler delete. do a proper set up. Muffler deletes are kinda ricer in my opinion, some like it though. personally not a fan. You arent driving a honda. Get a proper exhaust system and be done with it.

[spdy330]

Same applies with a CAI unless you have some type of forced induction.

Originally Posted by LaLakers91tc

I have no dyno proof, but the loss in backpressure should reduce low end torque in the car

[WinoGregorio]

Originally Posted by LaLakers91tc

I have no dyno proof, but the loss in backpressure should reduce low end torque in the car

Not really a problem on a street tuned EFI engine. On a carburated or mechanical fuel injected engine it would a problem unless you richened up the low speed mixture. Computer controlled engines do not have that problem. The other situation a little backpressure helps low end torque is on an engine that has a very aggressive cam profile with a lot of valve overlap. This can cause too much scavenging and pull unburned fuel out the exhaust port. Clearly, BMW engines do not fit either of these scenarios. What little torque is lost, if any at all, is far overshadowed by the increase in peak power and efficiency.