99 LX exhaust manifold (header) in CA
#1
99 LX exhaust manifold (header) in CA
Hi yall...
My brother has a 99 civic LX-- the CEL was on and the code pulled was a bad O2 sensor. I was changing out the sensor and saw that the header was cracked-- I"m thinking that this may have something to do w/ the faulty 02 sensor readings. I'm thinking that I should replace the manifold first before I replace the sensor, just to make sure I'm fixing the problem and not the symptom.
A couple of questions:
1. Is that manifold welded onto the cat? It looked like it was from my short exam of it.
2. I found a place that well sell me an aftermarket OEM equivalent (both mani and cat) -- I don't think it CARB exempt (i'm in California)-- for about $275. I think that's a pretty good price. However, the results I'm pulling up online give me non-carb exempt combos for roughly the same price, and the CARB certified ones are about $500+. Will it make a difference? I want to make sure it passes SMOG.
Any ideas?
thanks in advance for your help!
My brother has a 99 civic LX-- the CEL was on and the code pulled was a bad O2 sensor. I was changing out the sensor and saw that the header was cracked-- I"m thinking that this may have something to do w/ the faulty 02 sensor readings. I'm thinking that I should replace the manifold first before I replace the sensor, just to make sure I'm fixing the problem and not the symptom.
A couple of questions:
1. Is that manifold welded onto the cat? It looked like it was from my short exam of it.
2. I found a place that well sell me an aftermarket OEM equivalent (both mani and cat) -- I don't think it CARB exempt (i'm in California)-- for about $275. I think that's a pretty good price. However, the results I'm pulling up online give me non-carb exempt combos for roughly the same price, and the CARB certified ones are about $500+. Will it make a difference? I want to make sure it passes SMOG.
Any ideas?
thanks in advance for your help!
#3
RE: 99 LX exhaust manifold (header) in CA
it should be bolted to the cat, i beleive. i have an 04 so i cant speak for you, someone here will tell me if im wrong though
and you can get an aftermarket header from megan racing for mid 100's
and you can get an aftermarket header from megan racing for mid 100's
#5
RE: 99 LX exhaust manifold (header) in CA
with the LX, the cat comes after the header. I say get a new header (megan or DC), and a high-flow cat (magnaflow or randomstech) to go right behind it. The exhaust is only as free-flowing as the most constrictive compnent of the exhaust system. There is a big possibility the cracked header has something to do with the fault o2 reading.
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