How-To: Trick Comp From no cat

grindpunk16 · Post by **grindpunk16** » Thu Nov 18, 2004 10:07 pm

Parts Needed: ( 20 dollars if u dont have bits or compressed air.)

18mm Spark Plug Non-Fouler (come in 2 per pack)
Avail at local auto store (5 bux)

7/16th drill bit (5 bux)

Compressed air (outta can will work) (5 bux)

7/8th wrench (o2 socket will not work) (5 bux)

Drill

How To:

Jack up car
locate 2nd o2 sensor harness and disconnect
Grab 7/8th wrench and remove sensor
Take non fouler out of package and secure (preferably in
a vise) and drill out the inside of the non fouler. (if u try
to screw in o2 into non-fouler ull see y) just a bit needs
removed. DO NOT GO ALL THE WAY THROUGH THE NON
FOULER. You just need to open up the inside of the non
fouler so the o2 will fit inside it.blow out shavings with air.
Screw in o2 into non fouler then install non fouler into o2 bung

* May not work if u dont have an extra 3/4" of clearance around o2 sensor, u can get an exhaust shop to install an extra o2 bung if u need the clearance and u can plug the extra bung with an oil drain plug of m18x1.5

With this mod the o2 get heat for the heater circuit still reads a minimal amount of exhaust (just the tip of o2) making it seem to the 02 there is a difference from o2 #1 t o2 #2.

here is where u bore out the inside of the non fouler the circle in yellow needs to open up to 7/16th so the sensors probe will fit inside.

i recieved permission from jmihalchik from srt forums. thanks bro

CU_rob · Post by **CU_rob** » Fri Nov 19, 2004 7:33 am

let us know what the long term results are....

primarly, gas mileage? affected + and % change?

any ACTUAL performance gains?

o2 sensor fouling (as those bitches ain't cheap)?

grindpunk16 · Post by **grindpunk16** » Fri Nov 19, 2004 9:43 am

cost me about 5 bux. i have been runnin this for about a week same a lilttle better gas milage and better performance since i dont get timing pulled. also the guy who did this has been runnin it over 2 months now. no codes

LowNSlow · Post by **LowNSlow** » Sun Nov 21, 2004 10:28 pm

Sounds like a pita.... Im throwing the CEL due to the fact I have a high flow cat with no 02 bung. I have both sensors plugged into my Downpipe..

I think I'll just have the shop fix it.

grindpunk16 · Post by **grindpunk16** » Sun Nov 21, 2004 11:07 pm

u can have 2 in ur downpipe as long as one is before the cat and one is after it shouldnt matter. i rather run no cat on juice (no emissions in fl) i always have a spair cat if i want bottom end again:)

LowNSlow · Post by **LowNSlow** » Mon Nov 22, 2004 3:13 am

grindpunk16 wrote:u can have 2 in ur downpipe as long as one is before the cat and one is after it shouldnt matter. i rather run no cat on juice (no emissions in fl) i always have a spair cat if i want bottom end again:)

im selling my whole exhaust set up.. from the header to the srt rear... (high flow cat and stainless steel resonator as well)...

To come

3" DP , 3" Flex 3" high flow cat to 3" piping to 3" magnaflow muffler

Got Boost?

grindpunk16 · Post by **grindpunk16** » Mon Nov 22, 2004 9:52 am

i got juice

afterfx · Post by **afterfx** » Mon Jun 06, 2005 7:41 am

Grindpunk16, I see your sig is 2.0 SRT Equiped turbo.... Do you have a 2.4 Turbo on your 2.0 head ... if so how did you do it .

eVilcreations · Post by **eVilcreations** » Mon Jun 06, 2005 7:50 am

afterfx wrote:Grindpunk16, I see your sig is 2.0 SRT Equiped turbo.... Do you have a 2.4 Turbo on your 2.0 head ... if so how did you do it .

Adapter plate, and a lot of headaches.........

afterfx · Post by **afterfx** » Mon Jun 06, 2005 9:06 am

What parts would be needed and how many headaches is it ?

kevo · Post by **kevo** » Thu Jun 09, 2005 10:15 am

no particular part number, the adaptors are custom made and the headaches can be avoided by taking the car to a capable shop.

weber · Post by **weber** » Thu Jun 30, 2005 10:08 pm

Just installed mine tonight. so far no code...but havn' tdriven it much yet. we'll see in a couple days here if it throws a code.

dblsg · Post by **dblsg** » Thu Jul 07, 2005 3:35 pm

just put mine in today.............thanks for the info guys......and special thanks goes out to weber, i apreciate the work buddy, it was like a piece of art

WiTeOuT · Post by **WiTeOuT** » Thu Jul 07, 2005 6:06 pm

So forgive my obvious ignorance. But, what is this Mod supposed to do again??? And what do you supposedly gain?

eVilcreations · Post by **eVilcreations** » Thu Jul 07, 2005 6:43 pm

WiTeOuT wrote:So forgive my obvious ignorance. But, what is this Mod supposed to do again??? And what do you supposedly gain?

I think it's just supposed to trick your car's computer when you don't have a catalytic converter anymore......when you take the cat off....it'll throw a code.....this mod I believe removes that code, and fools the computer into thinking you have a catalytic converter still.

Please keep in mind that removing your catalytic converter is for OFF ROAD USE ONLY

Josh

WiTeOuT · Post by **WiTeOuT** » Fri Jul 08, 2005 12:49 am

Yeah, I gotcha. I did'nt know if it was to "fool" those that needed to pass emissions, if it could even do that? But, as for me and my house.....we will have Cat's.

Converters that is.

weber · Post by **weber** » Fri Jul 08, 2005 1:38 pm

dblsg wrote:just put mine in today.............thanks for the info guys......and special thanks goes out to weber, i apreciate the work buddy, it was like a piece of art

Hey, no problem bud. Always willing to help somebody out.

And for the records, if you do this mod correctly it WILL eliminate the Efficiency failure code. I have been on mine now for over a week (put 80 miles on a day) and NO code.

BlackRoseRacing · Post by **BlackRoseRacing** » Sat Jul 09, 2005 10:30 am

Ok so the next question is will I benefit from removing my 2nd O2 on a converter equipped car?

dblsg · Post by **dblsg** » Thu Jul 14, 2005 2:18 pm

code is back............this didn't work

BlackRoseRacing · Post by **BlackRoseRacing** » Thu Jul 14, 2005 7:09 pm

dblsg,
What are you exactly trying to do?

dblsg · Post by **dblsg** » Fri Jul 22, 2005 4:07 pm

BlackRoseRacing wrote:dblsg,
What are you exactly trying to do?

get rid of my code....obx header and downpipe (cat replacement) which is the same as weber.......weber made the non-fouler for me and himself........i threw it in, and the code is back....wtf

weber · Post by **weber** » Mon Jul 25, 2005 3:22 pm

yea, i got my code back now too.

Normally i'd throw in within 80-100 miles. This time around I didn't throw it until like 700 miles. Hmmm.. dammit

J-Villa · Post by **J-Villa** » Sun Mar 05, 2006 12:35 am

did you guys keep gettin re occurring cel? or did you guys convert back to stock and stop runnin this mod

JRM · Post by **JRM** » Sun Mar 05, 2006 3:32 am

wow talk about pullin up a thread that was dead.

J-Villa · Post by **J-Villa** » Sun Mar 05, 2006 8:36 am

yea but it's a how to thread......it's not some hey random post thread....i wanna know if any of them are still using this

and it's better to dig up a old thread than make a new one if it's about the same thing

JRM · Post by **JRM** » Sun Mar 05, 2006 8:57 am

true enough. code 420 finally popped up for me after about 2 weeks of running with no cat. I think i'll just run it rich for the time being until i can get a wideband hooked up though.

dblsg · Post by **dblsg** » Sun Mar 05, 2006 12:58 pm

still running it and still have the CEL... i've grown fond of it now

grindpunk16 · Post by **grindpunk16** » Sun Mar 05, 2006 1:57 pm

i have never had the code

dawm · Post by **dawm** » Fri Apr 07, 2006 3:23 pm

i got my foulers gonna get it drilled out at work prolly sunday or monday. had a CEL from O2 reading too rich heh so we'll see if this works =P

sllywhtboy · Post by **sllywhtboy** » Mon Apr 10, 2006 5:05 pm

dawm wrote:i got my foulers gonna get it drilled out at work prolly sunday or monday. had a CEL from O2 reading too rich heh so we'll see if this works =P

you're probably getting a combination of 0139, 0140, 0172

your 'o2 sensor reading rich' (0172) has nothing to do w/ your downstream sensor

with your downstream o2 sensor disconnected, you should get a code like, 'o2 sensor 1/2 remains at center' (0139 and 0140)