N55 catless downpipe w/ muffler delete

Shawnalston10 · 01-13-2020, 10:55 AM

Over Christmas I went catless on my 2011 335i and then a couple days ago I got 4 inch exhaust tips put on my car and got a muffler delete all for $60. To any of you thinking about doing catless downpipe with muffler delete it is for sure loud but definitely not to where you can't stand it. Drone isn't really that bad at all to be completely honest. Sound wise my girlfriend has a 2018 mustang GT fully straight piped with cats and it's loud as hell her cold start is 118.0 decibels standing 2-3ft behind the exhaust. On my fully straight piped N55 standing 2-3ft behind my car with a decibel reader my car is 119.3 decibels. Just a little feed back to any of you thinking about going fully straight piped. If you guys have any questions please feel free to ask!

Kamaan · 01-14-2020, 12:30 AM

Quote:

Originally Posted by Shawnalston10

Over Christmas I went catless on my 2011 335i and then a couple days ago I got 4 inch exhaust tips put on my car and got a muffler delete all for $60. To any of you thinking about doing catless downpipe with muffler delete it is for sure loud but definitely not to where you can't stand it. Drone isn't really that bad at all to be completely honest. Sound wise my girlfriend has a 2018 mustang GT fully straight piped with cats and it's loud as hell her cold start is 118.0 decibels standing 2-3ft behind the exhaust. On my fully straight piped N55 standing 2-3ft behind my car with a decibel reader my car is 119.3 decibels. Just a little feed back to any of you thinking about going fully straight piped. If you guys have any questions please feel free to ask!

Post an exhaust/flyby video please

Supermoon · 01-14-2020, 12:39 AM

Now rev to 5k rpm and measure how loud that shit is.

Shawnalston10 · 01-14-2020, 06:58 AM

Quote:

Originally Posted by Kamaan

Quote:

Originally Posted by Shawnalston10

Over Christmas I went catless on my 2011 335i and then a couple days ago I got 4 inch exhaust tips put on my car and got a muffler delete all for $60. To any of you thinking about doing catless downpipe with muffler delete it is for sure loud but definitely not to where you can't stand it. Drone isn't really that bad at all to be completely honest. Sound wise my girlfriend has a 2018 mustang GT fully straight piped with cats and it's loud as hell her cold start is 118.0 decibels standing 2-3ft behind the exhaust. On my fully straight piped N55 standing 2-3ft behind my car with a decibel reader my car is 119.3 decibels. Just a little feed back to any of you thinking about going fully straight piped. If you guys have any questions please feel free to ask!

Post an exhaust/flyby video please

Quote:

Originally Posted by Kamaan

Quote:

Originally Posted by Shawnalston10

Over Christmas I went catless on my 2011 335i and then a couple days ago I got 4 inch exhaust tips put on my car and got a muffler delete all for $60. To any of you thinking about doing catless downpipe with muffler delete it is for sure loud but definitely not to where you can't stand it. Drone isn't really that bad at all to be completely honest. Sound wise my girlfriend has a 2018 mustang GT fully straight piped with cats and it's loud as hell her cold start is 118.0 decibels standing 2-3ft behind the exhaust. On my fully straight piped N55 standing 2-3ft behind my car with a decibel reader my car is 119.3 decibels. Just a little feed back to any of you thinking about going fully straight piped. If you guys have any questions please feel free to ask!

Post an exhaust/flyby video please

Roads in Texas have been super wet from rain. I haven't even gone over 50% throttle yet because it's like a slip and slide haha but I'll definitely do flybys

bbnks2 · 01-16-2020, 01:19 PM

Quote:

Originally Posted by Shawnalston10

Over Christmas I went catless on my 2011 335i and then a couple days ago I got 4 inch exhaust tips put on my car and got a muffler delete all for $60. To any of you thinking about doing catless downpipe with muffler delete it is for sure loud but definitely not to where you can't stand it. Drone isn't really that bad at all to be completely honest. Sound wise my girlfriend has a 2018 mustang GT fully straight piped with cats and it's loud as hell her cold start is 118.0 decibels standing 2-3ft behind the exhaust. On my fully straight piped N55 standing 2-3ft behind my car with a decibel reader my car is 119.3 decibels. Just a little feed back to any of you thinking about going fully straight piped. If you guys have any questions please feel free to ask!

Can you get a reading at WOT from 50'?? Curious if it's over 97dba @ 50' (3-4 feet high). That's a limit for many clubs and tracks. I've been thinking about lobbing off the muffler. It's only like 10lb weight loss though so if it's crazy loud then not worth it.

z3Ro · 01-21-2020, 03:35 PM

e90 or e92? still running stock pipping? im running a stock cat and 3.5" pipping straight through to the tips. cruising at 80 i can barely hear my exhaust but ive got my catless DP just sitting in the garage. waiting for my smog/reg in march before i throw that bad boy in. do you have the burbles too?

Shawnalston10 · 01-21-2020, 03:44 PM

Quote:

Originally Posted by z3Ro

e90 or e92? still running stock pipping? im running a stock cat and 3.5" pipping straight through to the tips. cruising at 80 i can barely hear my exhaust but ive got my catless DP just sitting in the garage. waiting for my smog/reg in march before i throw that bad boy in. do you have the burbles too?

Quote:

Originally Posted by z3Ro

e90 or e92? still running stock pipping? im running a stock cat and 3.5" pipping straight through to the tips. cruising at 80 i can barely hear my exhaust but ive got my catless DP just sitting in the garage. waiting for my smog/reg in march before i throw that bad boy in. do you have the burbles too?

It's an E92. I'm going to have burbles soon after I fix a valve cover leak I have I'll tune in MHD with burbles and then post a video on how it sounds

01-13-2020, 10:55 AM	#1
Shawnalston10 Second Lieutenant 23 Rep 214 Posts Drives: Bmw 335i coupe Join Date: Sep 2019 Location: Houston Texas iTrader: (0)	N55 catless downpipe w/ muffler delete Over Christmas I went catless on my 2011 335i and then a couple days ago I got 4 inch exhaust tips put on my car and got a muffler delete all for $60. To any of you thinking about doing catless downpipe with muffler delete it is for sure loud but definitely not to where you can't stand it. Drone isn't really that bad at all to be completely honest. Sound wise my girlfriend has a 2018 mustang GT fully straight piped with cats and it's loud as hell her cold start is 118.0 decibels standing 2-3ft behind the exhaust. On my fully straight piped N55 standing 2-3ft behind my car with a decibel reader my car is 119.3 decibels. Just a little feed back to any of you thinking about going fully straight piped. If you guys have any questions please feel free to ask!
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01-14-2020, 12:39 AM	#3
Supermoon Lieutenant 166 Rep 429 Posts Drives: 2011 e92 335xi Join Date: Aug 2015 Location: Seoul iTrader: (6) Garage List 2011 BMW 335i xDriv ... [10.00]	Now rev to 5k rpm and measure how loud that shit is. __________________ 2011 E92 335i xDrive Pure Stage 1 \| DV+ & Inlet \| Injen Intake \| M3 Cowl \| ETS 5" FMIC & CP \| Aquamist HFS4 Direct Port \| CSF Radiator \| Wagner Catted DP \| BMW PE \| Apex FL-5 \| Michelin PS4S \| 335is Engine mount \| SDW Monoball thrust arms \| UUC Swaybars & SS Brake lines \| Bilstein B8 \| Dinan Springs & Shock mounts \| Whiteline RSFB \| M3 Rear Control arms \| Manzo Toe arms \| Wavetrac LSD
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01-21-2020, 03:35 PM	#6
z3Ro Private First Class 30 Rep 130 Posts Drives: 2011 E90 335XI M-Sport Join Date: Mar 2017 Location: Bay Area iTrader: (0)	e90 or e92? still running stock pipping? im running a stock cat and 3.5" pipping straight through to the tips. cruising at 80 i can barely hear my exhaust but ive got my catless DP just sitting in the garage. waiting for my smog/reg in march before i throw that bad boy in. do you have the burbles too?
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