RS4 (B7 Platform) Discussion Discussion forum for the B7 Audi RS4

Does milltek make catless downpipe??

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Old 09-17-2006, 04:13 AM
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Default Does milltek make catless downpipe??

I think the stock exhaust it great... to get more flow is to eliminate the cat only.
Old 09-17-2006, 07:00 AM
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No. However, the OEM pre-cat is eliminated.
Old 09-17-2006, 09:57 AM
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Default to run catless dp's your going to need software to supress the CEL as well as...

a shop which will do an inspection and take a blind eye to the fact that the emission control system is fubared. Also in states which use the OBDII Test for emissions I honestly don't think a catless car is going to pass. $0.02.
Old 09-17-2006, 10:10 AM
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Default forgot to add by going catless you might gain HP but...

you are going to loose torque and big time. Also the stock exhaust is going to act like a plug in the system. Just upgrade the whole exhaust and move on.
Old 09-17-2006, 10:19 AM
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Heaven forbid we should be environmentally responsible.
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