The Random E46/ZHP Question Thread

[BMWCurves]

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

[Sockethead]

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

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

[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

[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

[GotZHP]

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

I would suggest maybe some extra sound deadening?

[GotZHP]

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

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

[az3579]

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

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

I would suggest maybe some extra sound deadening?

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.

[Prestovie]

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

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

[Prestovie]

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.

My bad lol

[johnrando]

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.