The Random E46/ZHP Question Thread

Never had that problem. Stock exhaust is pretty darn quiet and absolutely drone free.

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Originally Posted by san

+1 don't think I've ever experienced it, with stock or corsa exhaust...

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I've had both as well, no drone anywhere throughout the RPM range

Really? Dang, that's weird. My exhaust is stock but I do have a Vibrant muffler on, so maybe that's the issue? This is the reason why I kept the stock one lol

This is actually really rattling me, the muffler was $150 and to have a body shop put it on was $100...
If the stock muffler is the fix then by all means I'll have it put back on:(

I don't see how your getting drone from just a muffler swap??

I would suggest maybe some extra sound deadening?

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Originally Posted by Prestovie

This is actually really rattling me, the muffler was $150 and to have a body shop put it on was $100...
If the stock muffler is the fix then by all means I'll have it put back on:(

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http://www.ft86club.com/forums/showt...t=71153&page=2

Half way down the page, you will see a post by me (GotBRZ). I ended up using a different but very similar product to finish the car. Made a world of difference and I still kept the 3" exhaust. Talk about drone and resonance. I wish I could find the video of once I added a catless unequal length exhaust header. I could set car alarms off :biggrin

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Originally Posted by Prestovie

Really? Dang, that's weird. My exhaust is stock but I do have a Vibrant muffler on, so maybe that's the issue? This is the reason why I kept the stock one lol

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Originally Posted by GotZHP

I don't see how your getting drone from just a muffler swap??

I would suggest maybe some extra sound deadening?

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A muffler absolutely can cause drone. If that's all you changed, then that is the cause of the problem.
Once a muffler's on, it's not considered a stock exhaust anymore, BTW. :)

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Originally Posted by GotZHP

http://www.ft86club.com/forums/showt...t=71153&page=2

Half way down the page, you will see a post by me (GotBRZ). I ended up using a different but very similar product to finish the car. Made a world of difference and I still kept the 3" exhaust. Talk about drone and resonance. I wish I could find the video of once I added a catless unequal length exhaust header. I could set car alarms off :biggrin

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Aw jeez, that's a lot of work :eek How much did that construction tape end up costing overall in the end?

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Originally Posted by az3579

A muffler absolutely can cause drone. If that's all you changed, then that is the cause of the problem.
Once a muffler's on, it's not considered a stock exhaust anymore, BTW. :)

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My bad lol

FYI, general consensus on the BMW Perf Intake is that BMW lists it at +3 HP, but it's really +7 to +10 HP, none of which makes a big diff but every little bit helps.