o2 sensor wire colors
#3
#5
MBWorld Fanatic!
Scroll down to CEL eliminator. They work on benz, I've verified that myself. Why are you removing the cats? I just did dyno research and found that removing the cats doesn't do anything. On my best dyno, I performed the same as with all 4 cats on, and on most dynos I actually lost about 4hp with the primaries removed.
#6
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Join Date: Jan 2004
Location: Silicon valley
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Audi C7.5 S6
![rolf](https://mbworld.org/forums/images/smilies/rofl.gif)
http://www.roadraceengineering.com/evo.htm
"Not really a simulator or fancy electronic box. Just an adapter to move the rear (downstream) O2 sensor out of the exhaust flow more to keep the check engine light from bugging you, should it be on for some reason :-/"
![Roll Eyes (Sarcastic)](https://mbworld.org/forums/images/smilies/rolleyes.gif)