running no cats
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Join Date: Nov 2007
Location: Red Oak, IA
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running no cats
Ok, so im pretty sure my cats are clogged, so im going to unbolt them tomorrow and find out. If they are, Will it hurt anything to just take them out and run a straight pipe? Im not worried about emissions, or loudness...
and How do you get the cats off without getting the CEL to come on?
and How do you get the cats off without getting the CEL to come on?
#6
your timing will not be retarded without them
if your CEL is on after you cut them off, your computer will be running in open loop
open loop is a default mode where the computer is operating on pre determined settings.
there was a PCM update available for 98-00 rangers for premature catalyst failure codes. this update shuts off the downstream 02 sensor. it was done to my truck, i have no CEL, no cats, and it doesnt sound like s*** i dont think.
if the light is on, you can order MIL eliminators that are inline resistors that plug in and give the 02 sensor a false reading that makes the computer think they are still there
if your CEL is on after you cut them off, your computer will be running in open loop
open loop is a default mode where the computer is operating on pre determined settings.
there was a PCM update available for 98-00 rangers for premature catalyst failure codes. this update shuts off the downstream 02 sensor. it was done to my truck, i have no CEL, no cats, and it doesnt sound like s*** i dont think.
if the light is on, you can order MIL eliminators that are inline resistors that plug in and give the 02 sensor a false reading that makes the computer think they are still there
#8
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Mother of all defouler threads... - 8th Generation Honda Civic Forum
This is what I found on Google..
This is what I found on Google..
#17
It dosent make a difference in sound until you get enough flow passing through. On my IX I can't tell a difference until I'm in boost, which means there is a significant amount of flow resulting in a much different sound (very ferrari-like)
If you have big cams expect flames during shifts.
The civic web link above is really an excellent explanation. I would purchase the "help" brand defoulers they sell at autozone, pepboys, ect. You can get a pair of 2 for 5$. On a Y-pipe setup thats 10$ for the fix. I think the part number I used was 42002, or 42009.
If you have big cams expect flames during shifts.
The civic web link above is really an excellent explanation. I would purchase the "help" brand defoulers they sell at autozone, pepboys, ect. You can get a pair of 2 for 5$. On a Y-pipe setup thats 10$ for the fix. I think the part number I used was 42002, or 42009.
#19
#21
#22
ranger + no cats+ loud muffler = fail
#24
#25
Why would you want to eliminate this?