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weezer
11-08-2004, 10:33 PM
I need some opinions about removing the resonator.
My previous car (1991 Audi with 5 cyl) i had the resonator/middle muffler removed and replaced with just a straight pipe, this reduces weight, created asimple flow and better sound. After a while, however, i got tired of the contant humming from inside the car. I don't have any experience with BMW sounds, just wondering if the loud humming would also be prevalent in an M44 engine.

Thanks,
weezer
ClubSport332ti
11-10-2004, 05:11 AM
my mid section was removed and it is really loud now. I set off alarms

http://forums.bimmerforums.com/forum/showthread.php?s=&threadid=173831&highlight=e46+exhaust
ddiorio1313
11-10-2004, 01:32 PM
My friend has a 2000 ford focus, and he replaced the headers and put an all new exhaust on and in place of the cat. he put a resonator...We took about a 1 hour trip last week and there was pretty much a constant hum the entire time...
weezer
11-10-2004, 08:13 PM
Has anyone ever tried the ANSA cat back sport exhaust.
Thinking of getting it , there is one on ebay for less than $300.00.
GDB
11-10-2004, 08:28 PM
Alot of people have had problems with the ansa falling apart. Spend the extra money and get a supersprint or stromung. Those seem to be the exhaust of choice, and they aren't too pricey.
AlaskaBlue
12-14-2004, 04:32 AM
Is it possible to replace the actual cat on a OBD-I M42 without the check engine light coming on?
GDB
12-14-2004, 03:50 PM
Is it possible to replace the actual cat on a OBD-I M42 without the check engine light coming on?

It depends on wether or not there is an O2 sensor after the cat. I don't know if there is, but if so then all you need is an MIL eliminator. Basiacally it sends the signals that the 02 sensor would so you don't have a check engine light on.
gump1114
03-03-2005, 05:41 AM
Are mil eliminators universal or does a company make them for bmws?
mightymax
03-27-2005, 06:45 PM
where can you get a MIL eliminator/o2 cheater at for the m44 318ti at?
schussey
03-27-2005, 09:59 PM
i have my cat removed, and my check engine light is constantly on. I have yet to do anything about the O2 sensors.......

-chris
Viper3812
03-28-2005, 05:05 AM
The supersprint racing resonator replaces the cat and the o2 sensor is before it on the m42. I'm still thinking of getting it.
Viper3812
03-28-2005, 05:07 AM
i have my cat removed, and my check engine light is constantly on. I have yet to do anything about the O2 sensors.......

-chris

Is yours an M42?
Panzer_M
03-28-2005, 07:39 AM
what about M44?

I found the SuperSpring pipe and am I am thinking about it
Prada
04-02-2005, 01:02 PM
Hello,
resonator????
where is resonator????

is it???
http://img55.exs.cx/img55/6025/resonat2rq.jpg
Panzer_M
04-03-2005, 01:03 PM
it's the pipe that the exhaust connect to.

Replaces the cat in the exhaust system.

Header To Resonator to Exhaust.
Prada
04-03-2005, 01:06 PM
I haven't understood
Prada
04-08-2005, 02:08 PM
oooooooooooooh,
it is "NO CAT"

in italian its name is direct tube (tubo dritto)

Than is this:
http://www.supersprint.it/prodotti/784802.jpg
mickd
04-10-2005, 03:44 AM
The Opels that I had owned had a front muffler before the rear axle and a resonator behind the rear axle. The RealOEM calls the whole assembly after the catalytic converter a rear muffler. http://www.realoem.com/bmw/showparts.do?model=CG53&mospid=47505&prod=19950500&btnr=18_0235&hg=18&fg=20&PHPSESSID=aa482615e4b90a1aa6240d184aedc275
GDB
04-10-2005, 03:56 AM
oooooooooooooh,
it is "NO CAT"

in italian its name is direct tube (tubo dritto)

Than is this:
http://www.supersprint.it/prodotti/784802.jpg


yes, that's it
Prada
04-10-2005, 07:18 PM
ok, thanks!