Testpipe Check engine light fix that works

This is for off-road use only and is illegal in the US use at your own risk, race/offroad use only. This is simply a fix for thrown check engine light when running a testpipe or cat-delete system. It works by simply tricking your computer to think you have a working catalyst by pulling the o2 sensor out of main exhaust flow. Do NOT modify you o2sensor before the cat, this one is needed for proper engine air fuel ratio and other computer readings, the o2 after the cat or in the cat is simply for monitoring the catalyst. it works. a table vice is a nice thing to have but c-clamps will work for holding it

Category:

Autos & Vehicles

Tags:

• cel
• celfix
• cat
• delete
• checkenginelight
• code
• thowingacode
• o2sensor
• o2
• raceexhaust
• offroad
• mitsubishi
• srt
• evo
• eclipse
• evolution
• custom
• modified
• hotrod
• boost
• spool
• howto

[alivingspartan]

Don't run the drill bit at high speed (even the ones that say "high-speed" on them). Thats why you burned through three drill bits. It also helps if you use a spray lubricant during the drilling process to reduce friction or quench the drill bit in water every few seconds to cool the bit. Just tryin to help.

[MethodRacing]

@alivingspartan great advice! leaned this after doing a buds car for him, by just cooling the bit and running slower speed worked great on the 2nd job i did. but the lube is a good idea too.

[Greeneyeddevl]

im going to try this i have a 1999 firebird formula i just cut the cats out of i really hope it works lol

[MethodRacing]

@Greeneyeddevl just remember your lying to the cpu so you may need more or less spacers depending, just trick the cpu in thinking there is enuff flow to be moving and enuff restriction to show a working catalyst all cars are diff. depending on make and model

[MethodRacing]

@ozwaldo24 yes it'll work thread is all same size, just may need to toy with how many u need to get it right

[ozwaldo24]

@MethodRacing nice idea, I want to do this to my 04 maxima, do you think is gonna work? what is the size of the spark plug anti-fouler, or are they all the same size?

[alivingspartan]

@MethodRacing Hey no prob man. I actually tried this on my 97 GS-T (no cat, 2.5'' straight piped, turbo back exhaust) and I didnt have a check engine light until about after a few hrs of driving unfortunately :/ When I got my exhaust done the CEL came on almost immediately, so I think this might be a viable solution if I had maybe another spacer in there? Only one way to find out I guess....



[footballmania132]

Shit I wish I had turbos and/or superchargers just sitting around! Nice video!

[MethodRacing]

@shadeseeker09 nope no issues but maybe some black carbon buildup on your rear bumper, A/F will be the same due to your comp thinking u have a working cat. you will notice much quicker spool. a must have for turbo applications.

[shadeseeker09]

nice work, i'm thinking of putting a test on mine, and this would solve the cel problem, but could this create any other problems, long term or any kind of a/f issues?