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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 04-27-2008, 09:00 PM   #1
monmon_4
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question for people with resonator delete

If I delete mine, do you delete the one closer to the muffler or further away from the muffler? I'm pretty sure it's the closer one but I'm double checking.

And in terms of the final product, do you guys experience any "popping" or "backfire" sort of noise that you didn't experience before your resonator delete?

I ask because my friend owns a Mini and after he installed a catback exhaust system, he gets this weird popping/backfire sound, and it's fine for his Mini, IMO, but might be a bit ricey for an e46.

The noise I'm talking about is the one that the car in this video experiences at high RPMs:

http://vids.myspace.com/index.cfm?fu...deoid=31618340
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Old 04-27-2008, 09:37 PM   #2
Anub!s
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The resonator closer to the cats is bigger than the one closer to the muffler. If you remove the small one the sound is less than the bigger one.

I have the smaller one removed and if I was on 1st around 3k rpm and let go of the gas, there's a slight bubble noise but it sounds good paired with the sound of the exhaust.
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Old 04-27-2008, 09:55 PM   #3
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the car in the video sounds good, I cut off the resonator that was away from the exhaust which makes the perfect sound with my AA exhaust. should def. do it even with a stock exhaust
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Old 04-27-2008, 10:34 PM   #4
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i have the 2nd resonator (one closest to muffler) deleted and i thinkmy exhaust sounds awesome. i have the highline tuning muffler...im considering deleting the other as well but also just want to run pipes from the cat back..

but ive never had a popping/backfire sound...
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Old 04-27-2008, 10:44 PM   #5
monmon_4
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so people either don't experience this sound or, if they do, they like it?
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Old 04-27-2008, 10:49 PM   #6
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I don't get this sound and I'm running a full Highline cat-back system (no resonators)
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Old 04-28-2008, 01:06 AM   #7
monmon_4
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Interesting. I am now even more unsure of whether or not I want to perform this resonator delete because I do not want to have this sound when I drive my car and double clutch down to stop.
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