Drivetrain Resonator vs 2nd cat
#1
Resonator vs 2nd cat
I have the proper funds to finally purchase a custom exhaust (the famous mangaflow setup.)
I just have a very specific question regarding droning and deleting either the 2nd cat, resonator, or both.
My plan was to remove the 2nd cat and keep the resonator with 2.5 inch piping. Or should i remove just the resonator instead? If i hear any drone, during cruising speeds, i might hurt myself...
I am actually turned off by the burbling sound most of the big mufflers make but i think ill be able to deal with it if it looks sweet. any ideas?
I just have a very specific question regarding droning and deleting either the 2nd cat, resonator, or both.
My plan was to remove the 2nd cat and keep the resonator with 2.5 inch piping. Or should i remove just the resonator instead? If i hear any drone, during cruising speeds, i might hurt myself...
I am actually turned off by the burbling sound most of the big mufflers make but i think ill be able to deal with it if it looks sweet. any ideas?
#6
You will NOT have Engine lights by removing the 2nd cat and/or resonator. If loudness is your main concern I would get rid of the 2nd cat while still having a resonator. It shoudl be fairly quiet while freeing up some exaust flow. Since you are going with Magnaflow, check out their resonators. Just find a competent shop that will know the proper placing of the resonator for the best sound reduction and overall exhaust sound.
#7
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#9
agree with above. I have an EU car here and no 2nd cat!
Milltek:
http://i437.photobucket.com/albums/q...0pics/new3.jpg
Only Cat on EU cars :
http://i437.photobucket.com/albums/q...6112008062.jpg
I thought the Flex join was a second cat Futureal33 quickly corrected me!
Milltek:
http://i437.photobucket.com/albums/q...0pics/new3.jpg
Only Cat on EU cars :
http://i437.photobucket.com/albums/q...6112008062.jpg
I thought the Flex join was a second cat Futureal33 quickly corrected me!
#10
Have the Invidia exhaust here. It doesn't have a provision for the 2nd cat, no CELs thus far. It does have a larger resonator and I do get drone at highway speeds but I think rather than add a cat back in I'll look into replacing the resonator with one of better quality. Magnaflow defiantly makes some good stuff.
#13
#14
It should be noted that federal law states that it is illegal to remove any emission control device. Violators are subject to a $2500 fine even if it is an unmonitored cat. You may not set off any CELs but those who have a tailpipe probe (sniff test) for inspection may want to think twice. If the federal law doesn't stop you. That being said, its your car do as you like. I just want folks to be aware of the law.
#15
after the dp... there is another cat followed by a resonator. the welding of the 2nd cat makes it look like an enlarged pipe. Watever you do, dont touch it after a drive. made that mistake and burnt off a few finger hairs...
Last edited by pillar; 11-10-2008 at 11:12 AM.
#16
i was thinking of removing both resonator and 2nd cat... but i wanted to add my own aftermarket resonator to properly take advantage of the 2.5 tubing.
from other random forums, people have said that the magnaflow resonators are bad quality(wears out after a year)... any other reputable companies that make solid 20-25 inch resonators?
edit: anyone know the mini s stock resonator size?
from other random forums, people have said that the magnaflow resonators are bad quality(wears out after a year)... any other reputable companies that make solid 20-25 inch resonators?
edit: anyone know the mini s stock resonator size?
Last edited by pillar; 11-10-2008 at 11:18 AM.
#17
Its wierd that there is that difference. Burnt my hand probably more times than i should have on my exhaust
#18
#20
It should be noted that federal law states that it is illegal to remove any emission control device. Violators are subject to a $2500 fine even if it is an unmonitored cat. You may not set off any CELs but those who have a tailpipe probe (sniff test) for inspection may want to think twice. If the federal law doesn't stop you. That being said, its your car do as you like. I just want folks to be aware of the law.
I've seen these disclaimers: "Off road use only" "Not legal for use in California"
Last edited by chickenplucker; 11-14-2008 at 08:03 AM. Reason: Additional thoughts.
#21
#22
Haha Lets have a carwash or cookie sale for a fundraiser.
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