e90 n55 resonator+cats delete?

korr · 11-02-2010, 10:49 PM

did the unplugging the acuator mod in the trunk, was thinking maybe having the resonator + secondary cats delete, or just the resonator delete for a better sound, good idea or bad idea? anyone had it done? Any ill affects causing the car losing power or any of that sort?

shockin330i · 11-03-2010, 12:02 AM

Quote:

Originally Posted by korr

did the unplugging the acuator mod in the trunk, was thinking maybe having the resonator + secondary cats delete, or just the resonator delete for a better sound, good idea or bad idea? anyone had it done? Any ill affects causing the car losing power or any of that sort?

The n55 has no secondary cats or resonator...

korr · 11-03-2010, 12:09 AM

Quote:

Originally Posted by shockin330i

The n55 has no secondary cats or resonator...

oh i see....so in this case a MD? i think i came across your old thread long time ago, did you have an issue with the MD or was it someone else

shockin330i · 11-03-2010, 12:17 AM

I'm not really sure what it was. It may have been that, may have been something else since I put the muffler on and I was still getting the same results.

FrankiE90 · 11-03-2010, 04:29 AM

there's a mid silencer/ cross pipes - delete that and see how that goes.

michaelthepsycho · 11-03-2010, 03:04 PM

Don't kill the planet. There's only one cat on the N55.

shockin330i · 11-03-2010, 03:15 PM

Ppart number 4 isn't on non xdrive cars

IcebergM4 · 11-03-2010, 03:36 PM

Quote:

Originally Posted by korr

did the unplugging the acuator mod in the trunk, was thinking maybe having the resonator + secondary cats delete, or just the resonator delete for a better sound, good idea or bad idea? anyone had it done? Any ill affects causing the car losing power or any of that sort?

I think it's a very bad idea to unplug that actuator. Not only did I throw a CEL twice after 2 months, I also lost a good bit of power. Now that everything is back to normal, the car is a rocket. If you want a deeper tone, just buy another exhaust. IMHO, the N55 exhaust sounds sexy stock. If you need some extra drone, then aftermarket it is.

The N55 exhaust also does not have any secondary cats whatsoever and only x-drive models have the resonators. My coupe exhaust is straight all the way to the rear.

MikeDNJBMW · 11-03-2010, 07:05 PM

i have a n55 e90xdrive, i have the one down pipe cat, then a x pipe and 2 small cats just like the old n54 exhausts. IDENTICAL to the old n54 set up

IcebergM4 · 11-03-2010, 07:09 PM

Quote:

Originally Posted by njlakeshoreg

i have a n55 e90xdrive, i have the one down pipe cat, then a x pipe and 2 small cats just like the old n54 exhausts. IDENTICAL to the old n54 set up

I wonder why BMW decided to take this route with the N55 and not give the RWD and X-drive the same exhaust. AWD packaging maybe?

By the way NJ, how do you like the new car so far?

MikeDNJBMW · 11-03-2010, 07:35 PM

Quote:

Originally Posted by Iceberg3

I wonder why BMW decided to take this route with the N55 and not give the RWD and X-drive the same exhaust. AWD packaging maybe?

By the way NJ, how do you like the new car so far?

i do like it, alot actually. the bilsteins with h&r suspension is awesome. but digging into the turns with a few small bumps make it dance all over!!! i talked to a reputable shop and they said its not the suspension its the crappy runflats! so if it is the runflats, im very upset at this ;/

IcebergM4 · 11-03-2010, 08:03 PM

Quote:

Originally Posted by njlakeshoreg

i do like it, alot actually. the bilsteins with h&r suspension is awesome. but digging into the turns with a few small bumps make it dance all over!!! i talked to a reputable shop and they said its not the suspension its the crappy runflats! so if it is the runflats, im very upset at this ;/

I have the same set-up. Yes, the run flats S U C K ! I'm waiting for my new tires to arrive to go with the 19" setup I have sitting in my closet

IcebergM4 · 11-03-2010, 08:04 PM

I guess if our cars came with a donut, then the trunk would be the same size as the G37 coupe's.

MikeDNJBMW · 11-03-2010, 08:14 PM

ahh man im freekin jealous!!! i want a new rim tire setup!! :0(

MikeDNJBMW · 11-08-2010, 09:04 PM

bump bump op, how is the removal going? i will be doing some doctoring this week sometime! lol

11-02-2010, 10:49 PM	#1
korr Captain 36 Rep 737 Posts Drives: 2011 E90 335i M-Sport Join Date: Feb 2009 Location: Bergen / Jersey iTrader: (4) Garage List 2011 335i Sedan M-s ... [10.00]	e90 n55 resonator+cats delete? did the unplugging the acuator mod in the trunk, was thinking maybe having the resonator + secondary cats delete, or just the resonator delete for a better sound, good idea or bad idea? anyone had it done? Any ill affects causing the car losing power or any of that sort? __________________ 2011 E90 335i M-Sport BSM
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11-03-2010, 12:17 AM	#4
shockin330i Brigadier General 798 Rep 4,784 Posts Drives: 2016 ZCP M3 Join Date: Jan 2007 Location: f y'all, I'm from Texas (RGV) iTrader: (1)	I'm not really sure what it was. It may have been that, may have been something else since I put the muffler on and I was still getting the same results. __________________ ERnie 2016 BSM/f80/ZCP
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11-03-2010, 04:29 AM	#5
FrankiE90 Major General 654 Rep 8,801 Posts Drives: Krooked Sk8board Join Date: Feb 2008 Location: Pasadena, Ca iTrader: (11)	there's a mid silencer/ cross pipes - delete that and see how that goes. __________________ FrankiE90 AKA:.[The TANK] *CLICK THE SIG E90s (been gone but not forgotten) • KW clubsports • • • • • • • • • • 18" BBS GT4 // Build E30 (pending) + E46 M3 Wagon ESTORIL Blue
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11-03-2010, 03:04 PM	#6
michaelthepsycho Lieutenant Colonel 76 Rep 1,644 Posts Drives: 11 Montego Blue E90 335i Step Join Date: May 2009 Location: CA iTrader: (4)	Don't kill the planet. There's only one cat on the N55. Attached Images __________________ Former car 2011 BMW 335i Step - Montego Blue / Chestnut Brown
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11-03-2010, 03:15 PM	#7
shockin330i Brigadier General 798 Rep 4,784 Posts Drives: 2016 ZCP M3 Join Date: Jan 2007 Location: f y'all, I'm from Texas (RGV) iTrader: (1)	Ppart number 4 isn't on non xdrive cars __________________ ERnie 2016 BSM/f80/ZCP
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11-03-2010, 07:05 PM	#9
MikeDNJBMW Lieutenant 16 Rep 420 Posts Drives: 2011 e90 335 ix, 08 335i e92 6 Join Date: Sep 2010 Location: bergen county, nj iTrader: (6) Garage List 2012 bmw x5d [0.00]	i have a n55 e90xdrive, i have the one down pipe cat, then a x pipe and 2 small cats just like the old n54 exhausts. IDENTICAL to the old n54 set up
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11-03-2010, 08:04 PM	#13
IcebergM4 Major 361 Rep 1,060 Posts Drives: '23 M4C Join Date: Jun 2009 Location: SoFlo iTrader: (1)	I guess if our cars came with a donut, then the trunk would be the same size as the G37 coupe's.
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11-03-2010, 08:14 PM	#14
MikeDNJBMW Lieutenant 16 Rep 420 Posts Drives: 2011 e90 335 ix, 08 335i e92 6 Join Date: Sep 2010 Location: bergen county, nj iTrader: (6) Garage List 2012 bmw x5d [0.00]	ahh man im freekin jealous!!! i want a new rim tire setup!! :0(
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11-08-2010, 09:04 PM	#15
MikeDNJBMW Lieutenant 16 Rep 420 Posts Drives: 2011 e90 335 ix, 08 335i e92 6 Join Date: Sep 2010 Location: bergen county, nj iTrader: (6) Garage List 2012 bmw x5d [0.00]	bump bump op, how is the removal going? i will be doing some doctoring this week sometime! lol
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