Cat

[AlpineIS]

Yes, an aftermarket cat will be less restrictive and cheaper but it will also be louder than stock...and noticeably so. I went through 3 replacement units before I went back to stock. If you are particular about noise like I am you will want to stick with the OE cat.

Of course, $1400.00 is an insane amount of money. So, your options are to try to get one fron a junker (most often illegaly, like I did) or find a place that sells OE remanufactured ones.

I purchased a remanufactured unit for another car I owned and it looked like I had bought it from the dealer. I came across this company after searching on google:

http://smithcat.com/

[PiercedE30]

1400 is LIST price. You can normally get it from a BMW specific shop for about 900-1000.

[xLibelle]

i dunno why this thread is still carrying on. Bavarian Auto has the one for a 325i for $400. Thats not even a cheap dealer. shut up and make some calls.

[mreloc]

Chill out.....THe bavauto one is not OEM.

[euroshark]

Aftermarket. My 335i has dual Catco cats and I don't think they are more than $100 each... Add in some custom work and supplies to get them installed and you come out less than a replacement cat.

[oldskool3]

What size is the inlet/oulet diameter. I am looking to order an aftermarket magnaflow cat right now. I am currently running no cat and my moms is on my ass to "save the environment one cat at a time." Damn inconvienient truth

[E30Driv3R]

i have 2.5 in 2.5 out, ill try and get the link.

[E30Driv3R]

http://store.summitracing.com/partdetail.asp?autofilter=1&part=MPE%2D94006CA&N=700+4294867633+4294891681+4294791975+4294791974+4294840872+115&autoview=sku

[ZeroCool]

http://store.summitracing.com/partde...5&autoview=sku

Will that work well enough to pass an emissions test? I don't want to spend $400+ on a stupid cat just to pass the retarded emissions test, that's almost more then I paid for the car....but $68 sounds much more reasonable.

[oldskool3]

i have 2.5 in 2.5 out, ill try and get the link.

Thanks but I need one for a 325i which from what I remember has dual inlet/outlet. I found one at summit with dual 2 inch inlet/outlets but I am not sure what the stock size is for our exhaust.Thanks again

http://store.summitracing.com/partdetail.asp?autofilter=1&part=MPE%2D94008CA&N=700+4294867633+4294891681+4294906129+4294903588+115&autoview=sku