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Posted: 12/14/2018 3:09:26 AM EDT
[#1]
You will lose a little bit of MPG by losing the ability of the O2 sensors to make the engine run lean when more fuel is not required. Upping octane won't really have any effect, plus I think that engine is only like 9.7:1 or so, so should be fine on 87 without detonation.
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Posted: 12/14/2018 3:19:40 AM EDT
[#2]
Depends. Does the car have more than one O2 sensor? If so, the one closest to the engine (upstream) controls fuel, the one at, or after the cat (downstream) determines the efficiency of the catalytic converter, and triggers the check engine loght.
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Posted: 12/14/2018 4:04:50 AM EDT
[#3]
Quote HistoryQuoted:
You will lose a little bit of MPG by losing the ability of the O2 sensors to make the engine run lean when more fuel is not required. Upping octane won't really have any effect, plus I think that engine is only like 9.7:1 or so, so should be fine on 87 without detonation. Why would it cost $1000? |
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Posted: 12/14/2018 6:07:24 AM EDT
[#4]
Quote HistoryQuoted:
Depends. Does the car have more than one O2 sensor? If so, the one closest to the engine (upstream) controls fuel, the one at, or after the cat (downstream) determines the efficiency of the catalytic converter, and triggers the check engine loght. That new of a car should have at least one upstream and one down stream for a 4 cylinder with one converter. Maybe two up stream if it is a V6, and two down stream if it has dual converters. OP: Which one did you modify? |
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Posted: 12/14/2018 8:51:13 AM EDT
[#5]
You need to modify the sensor past the carry, not the one before. If you do it correctly the will be no loss of mpg as the upstream sensor feeds back for af ratio.
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Posted: 12/14/2018 11:29:32 AM EDT
[#6]
Not sure on your exhaust setup but what about finding a wrecked or someone parting out this exact car and buy the cat setup off them? typically the exhaust is secitoned meaning exhaust manifold connects to a catted pipe section that then connects to the main exhaust running the lenght of the vehicle. I sell those for trucks all day long for $100 ready to bolt in for people doing what you are doing.
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Posted: 12/14/2018 4:22:29 PM EDT
[#7]
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This. It should run rich. A lean engine is more likely to detonate, which is what higher octane fuel is meant to prevent. You would be throwing money away, and probably giving up power, and making your mileage worse. Why would it cost $1000? Quote HistoryQuoted:
Quoted:
You will lose a little bit of MPG by losing the ability of the O2 sensors to make the engine run lean when more fuel is not required. Upping octane won't really have any effect, plus I think that engine is only like 9.7:1 or so, so should be fine on 87 without detonation. Why would it cost $1000? Go to autobarn.com and type in a catalytic converter. You can get one for $150 but it will say not for sale in California. Democrats... |
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Posted: 12/14/2018 4:23:25 PM EDT
[#8]
Quote HistoryQuoted:
X2 That new of a car should have at least one upstream and one down stream for a 4 cylinder with one converter. Maybe two up stream if it is a V6, and two down stream if it has dual converters. OP: Which one did you modify? Quote HistoryQuoted:
Quoted:
Depends. Does the car have more than one O2 sensor? If so, the one closest to the engine (upstream) controls fuel, the one at, or after the cat (downstream) determines the efficiency of the catalytic converter, and triggers the check engine loght. That new of a car should have at least one upstream and one down stream for a 4 cylinder with one converter. Maybe two up stream if it is a V6, and two down stream if it has dual converters. OP: Which one did you modify? |
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Posted: 12/14/2018 4:26:56 PM EDT
[#9]
I also read on YouTube that sometimes removing your catalytic converter and washing it in dish soap water solution over night will clean the dirt/debris enough to not trip your emissions.
Scotty Kilmer? Sometimes, losing 5% efficiency is enough. Worth a try i guess. Starts at 1:40  How to Clean Your Car's Catalytic Converter using Lacquer Thinner |
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Posted: 12/14/2018 5:43:13 PM EDT
[#10]
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California have very strict emissions standards. They have a more platinum than catalytic converters in the other 49 states. Go to autobarn.com and type in a catalytic converter. You can get one for $150 but it will say not for sale in California. Democrats... Quote HistoryQuoted:
Quoted:
Quoted:
You will lose a little bit of MPG by losing the ability of the O2 sensors to make the engine run lean when more fuel is not required. Upping octane won't really have any effect, plus I think that engine is only like 9.7:1 or so, so should be fine on 87 without detonation. Why would it cost $1000? Go to autobarn.com and type in a catalytic converter. You can get one for $150 but it will say not for sale in California. Democrats... |
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Posted: 12/14/2018 7:04:08 PM EDT
[#11]
Quote HistoryQuoted:
That's what I figured, but wouldn't a non-ca converter be better than a bypassed, plugged up converter? Buy one from the free world. Quote HistoryQuoted:
Quoted:
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You will lose a little bit of MPG by losing the ability of the O2 sensors to make the engine run lean when more fuel is not required. Upping octane won't really have any effect, plus I think that engine is only like 9.7:1 or so, so should be fine on 87 without detonation. Why would it cost $1000? Go to autobarn.com and type in a catalytic converter. You can get one for $150 but it will say not for sale in California. Democrats... Also, nobody will sell me an out of state converter. I’d have to drive out of state to pick one up. The $5 bypass is fine, at a loss of 1-2 mpg. I know in time I’d save more by buying the catalytic converter but I’ll be in a new vehicle in 3 years and I don’t drive it enough to warrant that choice. Doing some quick calculations, @ 9,000 mi a year and 12mpg vs 14mpg it would take 5-6 years to break even. |
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