I am wanting to cut off 2 Catylitic converters
#1
02-01-2009
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#16
04-01-2009
#17
04-02-2009
#18
04-02-2009
I eliminated all 3 converters from an escape that had them burned up due to a computer problem and the truck ran perfect. It did not sound noticably different than stock unless you were at higher rpm and near wot. It will pass emissions because I used the Evo/Sti spark plug defouler trick.
#19
04-02-2009
but is it worth the hassle? or should I just re-work my exhaust so I can bolt up cats when needed, then take them out and replace them with straight pipe after?
#21
04-02-2009
Stolen from EvoM..
Available at your local automotive store. Spark Plug Non Fouler PN 42009 ($4.99)
You now need to drill out 1 of the non foulers using a 1/2" drill bit. When finished this is what it will look like.
Side by Side comparision of the orignal and now modified non foulers
o2 Sensor inserted in the modified non fouler
Second, unmodified non fouler now installed on modified non fouler
Original non fouler->Modified non fouler->o2 sensor
Fully installed
The idea behind it is when you remove the cat the 2nd o2 sensor is going to have too much crap reaching the sensor that isnt filtered out, which will make it think the cat has gone bad. What this does is it moves the o2 sensor further away so a limited amount of exhaust gets to the o2 sensor, it is a VERY little ammount that actually gets to the sensor but as long as it is considerably less than the primary o2 sensor then it wont cause a CEL.
from (http://www.k-series.com/forum/showthread.php?t=8833) pics rehosted by me incase the thread/pics disappear.
saw a few threads asking how to do it so i found it done w/ pics and decided to pass along the info :thumbup:
You now need to drill out 1 of the non foulers using a 1/2" drill bit. When finished this is what it will look like.
Side by Side comparision of the orignal and now modified non foulers
o2 Sensor inserted in the modified non fouler
Second, unmodified non fouler now installed on modified non fouler
Original non fouler->Modified non fouler->o2 sensor
Fully installed
The idea behind it is when you remove the cat the 2nd o2 sensor is going to have too much crap reaching the sensor that isnt filtered out, which will make it think the cat has gone bad. What this does is it moves the o2 sensor further away so a limited amount of exhaust gets to the o2 sensor, it is a VERY little ammount that actually gets to the sensor but as long as it is considerably less than the primary o2 sensor then it wont cause a CEL.
from (http://www.k-series.com/forum/showthread.php?t=8833) pics rehosted by me incase the thread/pics disappear.
saw a few threads asking how to do it so i found it done w/ pics and decided to pass along the info :thumbup:
#23
04-02-2009
I don't see any advantage on most of todays cars unless:
1- You have a big turbo (like me)
2- You have high engine/engine bay temperatures and this is affecting how much timing you can run on a home brewn tune
3- Your cat is already shot due to rich mixtures or poor maintenance
4- You like to experiment with fun fuel and mixtures
Most of you guys don't fall into this category. I did it on the escape due to a coil/ecu failure that put way too much fuel into the converters and cakes them quickly. 1800$ for replacement parts, I took the easy way out (for a friend)
#25
04-02-2009
