emissions myth???
03-17-2005, 06:31 AM
#2
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Join Date: Oct 2003
Location: DOVER DE
Posts: 2,140
Re: emissions myth???
It's not a myth, it works. Reason so is because emissions measures percentages and parts per millions. Unpluging an injector dilutes the exhaust with unburned air, thus improving you emissions. It's only worth trying if your close.
03-17-2005, 09:24 AM
#4
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Join Date: Sep 2002
Location: plano texas
Posts: 1,429
Re: emissions myth???
...THAT is unless its like here in texas where the machines are calibrated to tolerate only a certain amount of ambient air in the exhaust stream and simply will not test it due to "dilution low flow". It will also say "dilution low flow" if there is a large exhaust leak or you simply dont put the sniffer in the tailpipe. Ide like to hear how it works for you though, hell it may not dilute it enough for the machine to care. Post back if you do it and get some results 
Last edited by lt4 fd; 03-17-2005 at 09:27 AM.
03-18-2005, 01:16 PM
#7
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Location: Hell was full so they sent me to NJ
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Re: emissions myth???
The extra air in the exhaust would be seen by the O2 sensors. The PCM would start adding fuel to both banks, causing the remaining 3 cylinders on each bank to run pig rich. Probably get a code for "lean" on both banks. Plugs would start to foul, cylinders would start to misfire.
I'd chalk it up to "myth".
I'd chalk it up to "myth".
03-18-2005, 03:08 PM
#8
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Join Date: Aug 2004
Location: Tinley Park, IL
Posts: 246
Re: emissions myth???
Originally Posted by Injuneer
The extra air in the exhaust would be seen by the O2 sensors. The PCM would start adding fuel to both banks, causing the remaining 3 cylinders on each bank to run pig rich. Probably get a code for "lean" on both banks. Plugs would start to foul, cylinders would start to misfire.
I'd chalk it up to "myth".
I'd chalk it up to "myth".
03-18-2005, 03:20 PM
#10
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Join Date: Nov 2004
Location: Aurora, CO
Posts: 459
Re: emissions myth???
I really don't think it would be very healthy for your engine to unhook 2 injectors, plus the unburned fuel coming out might send the sniffer crazy.
only thing I can think is get a cutout and find some way of opening it like 1/4 or 1/2 so the sniffer still gets enough to think it's getting everything but some is going out elsewhere. not sure on how sensitive the equipment is though.
also, I've read on here to use some denatured alcohol in your tank because it burns so cleanly.
only thing I can think is get a cutout and find some way of opening it like 1/4 or 1/2 so the sniffer still gets enough to think it's getting everything but some is going out elsewhere. not sure on how sensitive the equipment is though.
also, I've read on here to use some denatured alcohol in your tank because it burns so cleanly.
03-18-2005, 03:27 PM
#11
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Join Date: Aug 2004
Location: Tinley Park, IL
Posts: 246
Re: emissions myth???
Originally Posted by DavesLT1
I really don't think it would be very healthy for your engine to unhook 2 injectors, plus the unburned fuel coming out might send the sniffer crazy.
only thing I can think is get a cutout and find some way of opening it like 1/4 or 1/2 so the sniffer still gets enough to think it's getting everything but some is going out elsewhere. not sure on how sensitive the equipment is though.
also, I've read on here to use some denatured alcohol in your tank because it burns so cleanly.
only thing I can think is get a cutout and find some way of opening it like 1/4 or 1/2 so the sniffer still gets enough to think it's getting everything but some is going out elsewhere. not sure on how sensitive the equipment is though.
also, I've read on here to use some denatured alcohol in your tank because it burns so cleanly.
03-18-2005, 04:12 PM
#12
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Join Date: Sep 2002
Location: plano texas
Posts: 1,429
Re: emissions myth???
if you open the cutout its still based on a percentage so it would make no difference since a cutout cannot break apart and separate the nox and hc and co and push it out, it would fail for an exhaust leak anyhow 
Now that I think about it how would it matter much at all when talking percentage wise I mean the total volume of air from a properly running cylinder is WAY larger than just a dead cylinder.
Now that I think about it how would it matter much at all when talking percentage wise I mean the total volume of air from a properly running cylinder is WAY larger than just a dead cylinder.
03-18-2005, 04:14 PM
#13
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Location: Tinley Park, IL
Posts: 246
Re: emissions myth???
Originally Posted by lt4 fd
if you open the cutout its still based on a percentage so it would make no difference since a cutout cannot break apart and separate the nox and hc and co and push it out, it would fail for an exhaust leak anyhow Now that I think about it how would it matter much at all when talking percentage wise I mean the total volume of air from a properly running cylinder is WAY larger than just a dead cylinder.
Now that I think about it how would it matter much at all when talking percentage wise I mean the total volume of air from a properly running cylinder is WAY larger than just a dead cylinder.
03-18-2005, 04:42 PM
#14
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Join Date: Feb 2005
Location: Oshawa, Ontario, Canada
Posts: 293
Re: emissions myth???
I have my e-test license for ontario canada, (dont know if its the same for the states) but have, done a couple e-tests for friends with similar cars to mine and have got them past, with a really hot thermostat like 225, bottle of sure pass and placement of the sensor as far downstream as possible. They have both passed, barely but passed, I plan to do the same thing for mine in august. I have also low octance fuel helps?
