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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 > Resonator or High Flow cats?



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      11-28-2009, 05:02 PM   #23
Alpina_B3_Lux
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Quote:
Originally Posted by enrita View Post
After installing the resonators my drone is completely gone.
What kind of resonators did you use?

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      11-28-2009, 05:14 PM   #24
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Drone

when you say cans in the back are you referring to the mufflers?

thanks.
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      11-28-2009, 06:00 PM   #25
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Quote:
Originally Posted by Alpina_B3_Lux View Post
What kind of resonators did you use?

Alpina_B3_Lux
i bought midpipes with resonators from Rennart.
I actually bought the whole exhaust so i could change as well the xpipe.
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      11-28-2009, 06:02 PM   #26
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Quote:
Originally Posted by enrita View Post
i bought midpipes with resonators from Rennart.
I actually bought the whole exhaust so i could change as well the xpipe.
+1 i have the catless RennArt exhaust with the resonated midpipes with catless DP's and there is barely any drone (a little between 1700-2k rpms) and it is not loud at all!! I love it!!
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      11-28-2009, 06:53 PM   #27
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Quote:
Originally Posted by nj323ci View Post
+1 i have the catless RennArt exhaust with the resonated midpipes with catless DP's and there is barely any drone (a little between 1700-2k rpms) and it is not loud at all!! I love it!!
mine is quite loud but not that extreme. Sounds awesome
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      11-28-2009, 10:03 PM   #28
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Quote:
Originally Posted by badass335 View Post
For me it was too loud. It's an awesome rumble outside. I had people comment they liked the sound better than the v8 m3! Inside with an auto and under load, my head was spiltting open! I thought it was the vk dps but even after getting catted dps and resonators still a tad too loud for me. Not ricey high pitched fart can loud but nice low ' watch out I'm hiding speed' rumble. In the end the dps had very little difference in sound for me. It was more the rear cans that made the difference.

In your case if you find it a little loud now, yes it will amplify, but not huge. If you are ok now, you'll be fine with the catless dps
I am actually happy with the sound of the exhaust system now and I think its not loud at all, if your saying just a tad bit louder and deeper, than I am okay with that...I was just about to revise my order and get the catted ones!
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      11-28-2009, 10:35 PM   #29
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Quote:
Originally Posted by Mr. 5 View Post
I disagree. IMO, resonators only take away high frequencies which do nothing for drone.
If you really want to get rid of drone then put in some HFCs.
craig is 100% correct

been there, done that
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