Tweet
What kind of O2 sensors does an '02 3.8 use... 1 wire? heated 3 wire? The second half of the question, if I go from stock to Flowmaster American Thunder exhaust, will I need to convert the 02 sensor to keep it reading correctly? I read somewhere that bigger exhaust systems will cause O2s to read different because of the difference in air flow. I'm not sure of it, so I ask all of you. Thanks in advance.
-
<a href=\"http://www.cardomain.com/memberpage/771259\" target=\"_blank\">www.cardomain.com/memberpage/771259</a><br />\'02 3.8 a4<br />Mods: Nothing worth mentioning yet, but I have plans for it.<br /><br />\"Every time a Honda dies, a Chevy gets its wings.\" -
Pretty sure the O2 sensors are heated 3 wire.
The second question...if you switch (nice choice BTW) you'd might as well buy some O2 simulators, you're gonna need them to pass E-check.
Later.1999 Camaro V6 3.8L A4<br />Red, T-tops, Monsoon<br />No mods.......yet. -
Didnt think Id need to... I'm goin Flowmaster cat-back, so I wouldnt need the sims, right? If I feel like it later Ill switch to a high flow cat.<a href=\"http://www.cardomain.com/memberpage/771259\" target=\"_blank\">www.cardomain.com/memberpage/771259</a><br />\'02 3.8 a4<br />Mods: Nothing worth mentioning yet, but I have plans for it.<br /><br />\"Every time a Honda dies, a Chevy gets its wings.\"Comment
-
if you get a cat back designed for the v6 you shouldn't have a problem with passing emissions. Your rear O2 sensor should still read with in limits.
The problem (emissions) happens (but not always) when you convert to A) headers, or B) full 3" exhaust.
The manifold O2 sensors...are at least three wires.
The rear (emissions...post CAT) sensor...um...don't know. I just plugged mine into the new CAT.
Disconect your battery while you install the new cat.
I wouldn't worry about the sim until after you get the new system on. You may not need it.Comment
Comment