As a matter of friendly advice... a gutted cat just isn't worth the hassle.

Yes, they make O2 cheaters that might help with the rear O2 CEL.

The car will run okay, but I don't expect any noticeable power gains... probably just some noise.

 

^x2 on the gutted cat. You might be able to pass visual inspection, but you'll fail a sniff test... and they're not cheap for minimal extra power. If not worried about a sniff test, then an ORP that looks like a cat is much better, as they keep the gas flowing smoothly.

Randy can't touch his old files and can't redo anything he did when at FSW. It's a huge CF, but at least FSW seems willing to try and help. I'm not sure they can unless they have someone who can catch up to where Randy was. Contact them about re-doing your tune... might work out.

 

Fsw won't help I asked already

This cat is extra swapping the legal one in for smog was the plan.

 

Then if it's a swap in-and-out thing, a coated ORP is better power and cheaper, even with the coating.

 

Haven't found just an orp have seen headers that come with an orp. Or just orp for svt. I don't really want to swap the headers/manifold for smog.

Had considered having one made using the cat as a template but not feeling like the ends would justify the means.

 

I guess regular Zetec ORPs aren't a thing anymore. I sold mine years ago, but I don't see them on the market now.

Part of the issue with the stock cat is that the outlet pipe is only 2"... gutted or not, that's pretty tiny.

 

I just went and looked, the only ORP pipes I found are attached to ebay header systems. Crazy, I figured they were still a thing.

Wow, that was a riot back in the day, I loved ours.

When our cat hollowed itself out, we lost power, put the ORP on and gained more than we had before.

ORP plus old school Vibrant. That was loud. lol

- Drew

 

You all have convinced me to have an orp made.

But next question should I then go to a 3" rear flange and flex?

I'm 3" from the flex back right now.

 

Sorry, but what does 'orp' stand for in this thread?

 

off road pipe. it simply replaces the catalytic converter.

 

McNews Auto had an ORP for the SVT header to Zetec catback. Not sure if they still make them their site is down but you could try to call them.

 

http://www.c-f-m.com/performancepar...FM-2-1-2-inch-Polished-Stainless-SVT-Focus-Offroad-Pipe-128p34.htm#.U8LeQ0yUP4Y
+
http://www.c-f-m.com/performancepar...2-inch-Stainless-Flexpipe-for-02-04-Ford-Focus-SVT-ST170-80p82.htm#.U8LeSUw6j4Y

gets it done for a SVT header ... doesn't it?

flex-back is no different from the SVT to the zetec. And the only reasons a zetec flex won't work is the SVT is a tad shorter than a zetec long header and the flange. The SVT flex basically fills the length gap.

 

CA emissions I'm looking to just swap the orp/cat.

Dealing with the egr crap on top of a blower that technically isn't carb is a headache I don't want.

 

i have a guy making me an ORP so i'm bumping this thread again

anyone know a trick to clear the rear o2 CEL?

should i just leave it hooked up and see what happens? is there a thing i can plug into it to fake out the computer?

tuning it out is not an option right now randy is not available and i'm not going to pay some one else to re-tune it just to get rid of the cel.

looking for something simple.

 

Spark plug floulers, work fairly well... at least they delayed my CEL a long time when I flashed back to stock, it took special conditions to get it (IIRC, one time it was really cold out).

You usually use two of them, but it's possible to use only one if you don't have space to fit two and the sensor. If you use one, you drill it out just deep enough so the O2 sensor fits in tight... you don't want to open the hole all the way through, or you let too much exhaust into the space around the sensor.

 

gotcha... some one on FB suggested that and pointed out that CFM sells a plug in device. so i have plan A B and C.