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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > After dp install crackling



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      03-24-2012, 05:51 PM   #1
dirtmaster666
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After dp install crackling

Just finished my vrsf dp install which by the way fitment is flawless and also measured a full 2.5 at the outlet. Just wondering after my install I noticed some crackling. I assuming its just the dp taking the heat. Has anyone noticed this or any thoughts what it might be? Thanks
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      03-24-2012, 06:03 PM   #2
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If your noticing this with the car off then its probably just the downpipes cooling down.

If you notice it while driving or coasting in gear then its just unburnt gas being burnt off in the exhaust vs. in the cats as it usually would.

Either way not anything to worry about.
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      03-24-2012, 06:13 PM   #3
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Quote:
Originally Posted by Streetluger06
If your noticing this with the car off then its probably just the downpipes cooling down.

If you notice it while driving or coasting in gear then its just unburnt gas being burnt off in the exhaust vs. in the cats as it usually would.

Either way not anything to worry about.
Noticed it during idle. Haven't been able drive yet as its stuck in my back gfarage and the gates are blocked by ice
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      03-24-2012, 06:32 PM   #4
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When I park my car and let it idle i always hear those sounds, its normal.
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      03-24-2012, 06:39 PM   #5
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Originally Posted by Beemw335
When I park my car and let it idle i always hear those sounds, its normal.
Awesome.
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      03-24-2012, 07:04 PM   #6
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Good to know for future reference!
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      03-25-2012, 03:32 PM   #7
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Quote:
Originally Posted by dirtmaster666 View Post
Just finished my vrsf dp install which by the way fitment is flawless and also measured a full 2.5 at the outlet. Just wondering after my install I noticed some crackling. I assuming its just the dp taking the heat. Has anyone noticed this or any thoughts what it might be? Thanks
Glad to hear that you're happy with the pipes.

I'm not really sure what the crackling could be but if you take a short video we can try to figure it out for you
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      03-25-2012, 06:09 PM   #8
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Quote:
Originally Posted by dirtmaster666
Just finished my vrsf dp install which by the way fitment is flawless and also measured a full 2.5 at the outlet. Just wondering after my install I noticed some crackling. I assuming its just the dp taking the heat. Has anyone noticed this or any thoughts what it might be? Thanks
Getting ready to order these myself! The crackeling has to be just the cooling of the dp's and exhaust in general
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      03-25-2012, 06:35 PM   #9
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Quote:
Originally Posted by turbobird14
Quote:
Originally Posted by dirtmaster666
Just finished my vrsf dp install which by the way fitment is flawless and also measured a full 2.5 at the outlet. Just wondering after my install I noticed some crackling. I assuming its just the dp taking the heat. Has anyone noticed this or any thoughts what it might be? Thanks
Getting ready to order these myself! The crackeling has to be just the cooling of the dp's and exhaust in general
Don't think it had to do with cooling as I do t here it when the car is off. And also when I start the car it doesn't happen right away. It seems to happen when things are heating up. Also installed the ER ic. Would the ic cause anything
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