Y-Pipe Res Delete or N55 Mids

Miko226 · 10-07-2013, 09:29 AM

Trying to choose between buying a set of n55 Mids or buying the Y-Pipe resonator delete.. My current setup is Active DP with Berk Ceramic Race Delete.. i was wondering what i would get better sound deleting the cats or the resonator as i do not want to delete both.. The car feels a little bottled up on the back end with both right now looking for more flow out the back and more aggressive sound..

Also does everyone weld the Y-Pipe or Clamp it on?

SDS135 · 10-07-2013, 10:08 AM

Y pipe. Use the clamps that are provided. My $0.02.

TT1351 · 10-07-2013, 10:45 AM

i have a y pipe up for grabs Fran

Miko226 · 10-07-2013, 10:46 AM

Quote:

Originally Posted by TT1351

i have a y pipe up for grabs Fran

Did you have it on the car and take it off?

TT1351 · 10-07-2013, 02:06 PM

Had it on my car, switched it out when I added the N55 mid pipe.

dannypwr · 10-07-2013, 08:05 PM

TT how was the sound difference between the y and n55 mid?

Miko226 · 10-07-2013, 08:10 PM

Quote:

Originally Posted by dannypwr

TT how was the sound difference between the y and n55 mid?

+1

n54pete · 10-07-2013, 10:10 PM

I'd get rid of cats before the resonator, that'll free up some flow while still getting rid of some of that drone

Sixle · 10-08-2013, 01:12 AM

I ran the axle back portion of the perf exhuast + the N55 mid-pipe for a solid 6 months and then added the y-pipe afterward. The n55 pipe offered noticeably better throttle response and the sound was awesome.

Fast forward 6 months and I had the Y-Pipe installed (clamped on) and it is a bit louder, I wouldn't say a massive difference but there is definitely a more throaty sound in the exhaust. There is more drone... But honestly the noise from the stock RFT's gave me more of a headache than this drone gives me, it truly isn't that bad. Cold-starts are brutal with the y-pipe now.

I recommend both if possible, don't know how the N55 sounds on sound alone as it was installed the the perf exhaust axleback, but the throttle response was worth it IMO. Hope this helps.

TT1351 · 10-08-2013, 02:26 PM

+1 with Y pipe sounds a bit louder, performance difference can't really tell, but I do know when I put an AA track pipe on my E36 M3 LTW, which deleted the cats, the difference was huge power wise, sound also improved, so I suspect removing the cats with a N55 mid pipe should provide somewhat of a performance increase, Y pipe is sold btw. Fran

Miko226 · 10-09-2013, 11:42 AM

Quote:

Originally Posted by n54pete

I'd get rid of cats before the resonator, that'll free up some flow while still getting rid of some of that drone

This is the route im going with the n55 mids it seems like the cats put more restriction than the resonator does hoping to keep it somewhat tamed for everyday driving

woahitsholland · 10-10-2013, 09:07 AM

I have n55 mid with berk street slip-on. I've heard it with the n54 mids with stock muffler and with berk, and just deleting the cats made it sound a lot louder a and I like the exhaust note better as well. Hardly any drone. Deleting the cats over the resonator is always a better choice.

10-07-2013, 09:29 AM	#1
Miko226 Captain 61 Rep 722 Posts Drives: 11' 335d Join Date: Nov 2012 Location: Boca Raton, FL iTrader: (0)	Y-Pipe Res Delete or N55 Mids Trying to choose between buying a set of n55 Mids or buying the Y-Pipe resonator delete.. My current setup is Active DP with Berk Ceramic Race Delete.. i was wondering what i would get better sound deleting the cats or the resonator as i do not want to delete both.. The car feels a little bottled up on the back end with both right now looking for more flow out the back and more aggressive sound.. Also does everyone weld the Y-Pipe or Clamp it on? __________________ 11' m57 335d 165k Miles - JR 2, ATM Full Exhaust & Intake, Wagner FMIC, AAR Boost Pipe, AAR Swirl Delete, AAR EGR Delete 08' n54 135i FBO E85 - SOLD
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10-07-2013, 10:08 AM	#2
SDS135 First Lieutenant 19 Rep 318 Posts Drives: 2009 BMW 135i M Sport Join Date: Nov 2012 Location: Toronto, Ontario, Canada iTrader: (2)	Y pipe. Use the clamps that are provided. My $0.02.
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10-07-2013, 10:45 AM	#3
TT1351 Captain 508 Rep 929 Posts Drives: 135, GTS, E30 M3+ Join Date: Dec 2008 Location: Massachusetts iTrader: (2)	i have a y pipe up for grabs Fran
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10-07-2013, 02:06 PM	#5
TT1351 Captain 508 Rep 929 Posts Drives: 135, GTS, E30 M3+ Join Date: Dec 2008 Location: Massachusetts iTrader: (2)	Had it on my car, switched it out when I added the N55 mid pipe.
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10-07-2013, 08:05 PM	#6
dannypwr Private 4 Rep 82 Posts Drives: 135i Vert Join Date: Aug 2013 Location: Nyc iTrader: (0)	TT how was the sound difference between the y and n55 mid?
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10-07-2013, 10:10 PM	#8
n54pete Private First Class 11 Rep 167 Posts Drives: e82 Join Date: Apr 2013 Location: ohio iTrader: (2)	I'd get rid of cats before the resonator, that'll free up some flow while still getting rid of some of that drone
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10-08-2013, 01:12 AM	#9
Sixle Private First Class 17 Rep 143 Posts Drives: CR 135i N54 6MT Join Date: Nov 2012 Location: Georgia iTrader: (0)	I ran the axle back portion of the perf exhuast + the N55 mid-pipe for a solid 6 months and then added the y-pipe afterward. The n55 pipe offered noticeably better throttle response and the sound was awesome. Fast forward 6 months and I had the Y-Pipe installed (clamped on) and it is a bit louder, I wouldn't say a massive difference but there is definitely a more throaty sound in the exhaust. There is more drone... But honestly the noise from the stock RFT's gave me more of a headache than this drone gives me, it truly isn't that bad. Cold-starts are brutal with the y-pipe now. I recommend both if possible, don't know how the N55 sounds on sound alone as it was installed the the perf exhaust axleback, but the throttle response was worth it IMO. Hope this helps.
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10-08-2013, 02:26 PM	#10
TT1351 Captain 508 Rep 929 Posts Drives: 135, GTS, E30 M3+ Join Date: Dec 2008 Location: Massachusetts iTrader: (2)	+1 with Y pipe sounds a bit louder, performance difference can't really tell, but I do know when I put an AA track pipe on my E36 M3 LTW, which deleted the cats, the difference was huge power wise, sound also improved, so I suspect removing the cats with a N55 mid pipe should provide somewhat of a performance increase, Y pipe is sold btw. Fran
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10-10-2013, 09:07 AM	#12
woahitsholland Private 5 Rep 73 Posts Drives: 2010 135i Join Date: Feb 2013 Location: Boston, MA iTrader: (0)	I have n55 mid with berk street slip-on. I've heard it with the n54 mids with stock muffler and with berk, and just deleting the cats made it sound a lot louder a and I like the exhaust note better as well. Hardly any drone. Deleting the cats over the resonator is always a better choice.
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