[BMWrush17]

Johnny Boost I have a BMW PE. I do agree it is expensive relative to the alternative options that probably are just as good.

I just wonder how a resonator at the location of the DP vs. the middle of the car would change the sound.

[Johnny Boost]

Originally Posted by jmk24

Do you have catless dp as well? 6mt?

Edit: just saw you have AT e90 like myself. I like how mine sounds but there is definitely some sound increase at about 60—70mph on the freeway. Do you have any videos of your setup?

I will try to take a video tomorrow.

Originally Posted by BMWrush17

Johnny Boost I have a BMW PE. I do agree it is expensive relative to the alternative options that probably are just as good.

I just wonder how a resonator at the location of the DP vs. the middle of the car would change the sound.

I thought the exhaust note with the stock exhaust + DP was perfect but I wished it was a little louder. The PE + DP w/ resonators has a slightly louder/deeper tone but still no rasp. The cold starts aren't as loud as before either and I think that is due to the resonators.

[E46NAQ7]

Has anyone heard this setup? Looks like a muffler delete with resonators in the midpipe?

[Bladerunner]

I have an appointment this Saturday to add the resonators but I'm thinking I may just put the stock mufflers back on, even my girlfriend found it too loud and very annoying with the PE. I don't think the resonators will make much of a difference, I'll decide when I get to the shop!

[Johnny Boost]

Originally Posted by Bladerunner

I have an appointment this Saturday to add the resonators but I'm thinking I may just put the stock mufflers back on, even my girlfriend found it too loud and very annoying with the PE. I don't think the resonators will make much of a difference, I'll decide when I get to the shop!

Resonators aren't going to do much as far as volume. The stock exhaust is your safest best. It's only loud when you want it to be.

[Bladerunner]

yeah, I think that's what I'm going to do. It's great for wknd car but the drone and loud acceleration can be a bit much on the daily driver!

[E90 335xi]

For an xDrive, does adding resonators produce the same result - i.e. quiet down the drone?

And if so, where should they be placed?

I have the VRSF DP & PE mod. Fine with windows down in the summer, but with winter coming, the cabin noise is going to get old really fast.

[jmk24]

Originally Posted by E90 335xi

For an xDrive, does adding resonators produce the same result - i.e. quiet down the drone?

And if so, where should they be placed?

I have the VRSF DP & PE mod. Fine with windows down in the summer, but with winter coming, the cabin noise is going to get old really fast.

My understanding is that xdrive midpipes already have resonators built in but I could be wrong.

[E90 335xi]

Originally Posted by jmk24

My understanding is that xdrive midpipes already have resonators built in but I could be wrong.

Can any confirm?

And if that's the case, is there another way to further decrease drone - i.e. adding more resonators elsewhere in the exhaust piping?

(I have downpipe & PE mod)

[Dhillon92]

My e92 xdrive has a pair of secondary cats, no resonators. I'm on stock exhaust so I can't really comment on much else, I'm running vrsf dp and plan on replacing secondary cats with resonators.

[tawfeeqh]

Originally Posted by E90 335xi

Can any confirm?

And if that's the case, is there another way to further decrease drone - i.e. adding more resonators elsewhere in the exhaust piping?

(I have downpipe & PE mod)

The e90/e91 n54 335xi/i have resonators in the midpipes, whereas the e92/e93 don't from what i have read (they have a x pipe)

I am 100% the e90 335i has a centre resonator in the midpipe because thats what i have. I have recently installed the PE midpipe (that essentially has a x pipe in place of a resonator) and PE muffler. I have AR catless dp

I am also finding this setup a bit too loud and obnoxious (bit ricer too) and trying to work whether I should

a) replace PE midpipes with the stock midpipes that contains a resonator
b) install vibrant resonators on the PE midpipes
c) replace PE mufflers with the stock ones but leave the PE midpipes (essentially end up lie a coupe)
d) return to stock

I wonder if options A and B would lead to the same outcome (in terms of sound level i.e. oem bmw resonator vs vibrant)

Anyone with any views/ experiences would be great

[Joey911]

Originally Posted by tawfeeqh

The e90/e91 n54 335xi/i have resonators in the midpipes, whereas the e92/e93 don't from what i have read (they have a x pipe)

I am 100% the e90 335i has a centre resonator in the midpipe because thats what i have. I have recently installed the PE midpipe (that essentially has a x pipe in place of a resonator) and PE muffler. I have AR catless dp

I am also finding this setup a bit too loud and obnoxious (bit ricer too) and trying to work whether I should

a) replace PE midpipes with the stock midpipes that contains a resonator
b) install vibrant resonators on the PE midpipes
c) replace PE mufflers with the stock ones but leave the PE midpipes (essentially end up lie a coupe)
d) return to stock

I wonder if options A and B would lead to the same outcome (in terms of sound level i.e. oem bmw resonator vs vibrant)

Anyone with any views/ experiences would be great

I've been looking for a resonator mid pipe from pre LCI E90s, you're the first who mention having one.

PLEASE SELL ME YOURS!!!!

[tawfeeqh]

Originally Posted by Joey911

I've been looking for a resonator mid pipe from pre LCI E90s, you're the first who mention having one.

PLEASE SELL ME YOURS!!!!

lol - all e90 sedan 335i came with midpipes with a centre resonator so you should be able to find a used one somewhere.

Sorry i am going to keep my stock mid pipes as i am speculating putting them on with my PE to quieten down the exhaust a little

[tawfeeqh]

Originally Posted by CantCatchMe

Get the midpipe, you won't regret it. I have an xi, and paired up with the PE and catless DP....it's amazing.

do you have an e90?

so is your setup catless dp and PE with stock e90 midpipes that contains the centre resonator?

I have the same setup at the moment but have x-pipe in the midpipes instead of resonators. Am speculating putting the stock midpipes again to reduce sound a little

[BMOEW]

I have an IS with the IS stock exhaust and VRSF downpipes. Still have the secondary cats, I was wondering are you guys just replacing the cats with resonators?

[Mikaeldarer]

Originally Posted by tawfeeqh

lol - all e90 sedan 335i came with midpipes with a centre resonator so you should be able to find a used one somewhere.

Sorry i am going to keep my stock mid pipes as i am speculating putting them on with my PE to quieten down the exhaust a little

Only pre LCI have resonator. My 2011 LCI e90 exhaust had the x pipe

[proj335i]

Originally Posted by Mikaeldarer

Only pre LCI have resonator. My 2011 LCI e90 exhaust had the x pipe

+1 same here N55 E90 has an x-pipe, no resonator

[tawfeeqh]

Originally Posted by proj335i

+1 same here N55 E90 has an x-pipe, no resonator

N54 pre lci = resonator
N54 lci = resonator
N55 lci = no resonator

This is my understanding from what I have read on the forums. I have an n54 pre lci