Noobie... Somebody hollowed out my cat
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Noobie... Somebody hollowed out my cat
Hello all. I'm new here. Have an 02 Civic. The previous owner hollowed out the cat. Of course cel is on, and don't mind tricking it. Question is, the car is stock, how bad does it hurt mpg or performance? I appreciate the answers in advance.
I have a lot of reading to do here!
I have a lot of reading to do here!
If you think a good mechanic is expensive, try hiring a bad one
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Re: Noobie... Somebody hollowed out my cat
The previous owner hollowed out the cat. Of course cel is on,
Previous owner owes you a passing emissions test within something like 90 days of sale, right?
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Joined: Dec 2011
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From: Midwest. Aiming about mid-chest
Rep Power: 519 Re: Noobie... Somebody hollowed out my cat
Ok then...... Some of the cars can suffer a little mileage drop because the computer will try to run tests on the nonexistent cat during each drive cycle, but most people never notice.
And your exhaust will stink and I'mma hug a tree now.
And your exhaust will stink and I'mma hug a tree now.
*watches temp gauge like a hawkboss* :D
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Rep Power: 0 Re: Noobie... Somebody hollowed out my cat
It'll prolly smell a lot better than my SV's exhaust, which is muy fruity with the suicide gases and aldehydes from good ol' carbs (not). 
This may or may not apply... but my '04 uses an LAF (wideband) sensor in place of the 01-03 threshold O2 sensor... and when I bought it the old O2 sensor was in the upstream position. The car ran like a scalded cat in this condition all the way to redline (downstream was OEM spec), not the worst-case 4000-rpm redline state the PCM sometimes enforces, like with a VTEC solenoid failure or low oil pressure code.
Google 'spark plug non-fouler', and see if that's also a solution you may be able to use to get the PCM fooled enough to reach normal output/mpg. That's an old trick, but in your (highly regrettable
) case, it may work. 
This may or may not apply... but my '04 uses an LAF (wideband) sensor in place of the 01-03 threshold O2 sensor... and when I bought it the old O2 sensor was in the upstream position. The car ran like a scalded cat in this condition all the way to redline (downstream was OEM spec), not the worst-case 4000-rpm redline state the PCM sometimes enforces, like with a VTEC solenoid failure or low oil pressure code.
Google 'spark plug non-fouler', and see if that's also a solution you may be able to use to get the PCM fooled enough to reach normal output/mpg. That's an old trick, but in your (highly regrettable
) case, it may work. 
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