Apr downpipe kit..... cats or no cats???
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1st Gear
Joined: Mar 2008
Posts: 183
From: Iowa city, IA
RE: Apr downpipe kit..... cats or no cats???
wow the cel eliminators should go in the second set of O2 sensors not the front ones.... i would change that asap. punching out the precats shouldn't cause a check engine light anyways...... just hook all 4 O2 sensors and u should be fine with no check engine lights...
1st Gear
Joined: May 2008
Posts: 191
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RE: Apr downpipe kit..... cats or no cats???
ORIGINAL: derek072887
wow the cel eliminators should go in the second set of O2 sensors not the front ones.... i would change that asap. punching out the precats shouldn't cause a check engine light anyways...... just hook all 4 O2 sensors and u should be fine with no check engine lights...
wow the cel eliminators should go in the second set of O2 sensors not the front ones.... i would change that asap. punching out the precats shouldn't cause a check engine light anyways...... just hook all 4 O2 sensors and u should be fine with no check engine lights...
1st Gear
Joined: Dec 2007
Posts: 203
From: Redmond, WA
RE: Apr downpipe kit..... cats or no cats???
Just install the cats... Emission standards are getting tighter and tighter around the nation so play it safe and install the cats. Plus it's better for the environment.
2nd Gear
Joined: Aug 2007
Posts: 765
From: Sav, GA
RE: Apr downpipe kit..... cats or no cats???
haha i grew up in CR iowa cops there sucked plus there was not really to many s4's so it was nice killing all the vettes haha, I say go with what you want or try both if you can. I went with strait pipes and LOVE the sound, but to each his own.
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