Stainless Exhaust

brownie · Post by **brownie** » Mon Mar 15, 2010 8:24 pm

Anybody out their running Jap spec stainless Exhaust system,Running from headers to tip ?.
I've finally got a system sorted and want to see if it is all there,Problem at work is we only see standard stuff,Anything from japan always has the cat piece gone ,The japs won't let us have them ,
I;ve got Headers,middle pipe and Muffler,Has anybody else got a similar setup that hasen't got a Cat in there as well ?
I've had the headers for awhile and just got the other 2 piece's in.

SLYDIT · Post by **SLYDIT** » Tue Mar 16, 2010 9:15 pm

I HOPE thats a heated (3 wire)oxygen sensor in there.

With the O2 sensor so far away from the head it wont be heating up as it should or maintaining temp at idle resulting in poor mixtures lumpy idle and poor fuel economy.

If you need to get a heated one they arent that expensive and are easy to wire in.

when i went turbo i datalogged my O2 in a similar location and at idle you could see the o2 sensor lose its mind at idle and the voltage was unstable due to it cooling down too much. a trip to pick a part and $10 later it was all sorted.

brownie · Post by **brownie** » Tue Mar 16, 2010 10:46 pm

Never really thought about that,This is the way the headers came ,I've had these stashed long before i even got the car.
I'll probably them them on as is ,But will bear that in mind if it does run a bit doggy,We've got a good sparky over the road from work who will good as sorting this for me.
Thanks

blackbetty · Post by **blackbetty** » Wed Mar 17, 2010 8:25 pm

where would the cat normally be? i dont understand the problem? no cat, thats not illegal is it? no cat, better performance????

Euen · Post by **Euen** » Thu Mar 18, 2010 2:59 pm

blackbetty wrote:where would the cat normally be? i dont understand the problem? no cat, thats not illegal is it? no cat, better performance????

CAT normally sits just after the header. I suspect that the Japs hold on to the CATs as they are quite valuable for recycling.
I don't believe running without one is illegal, certainly not on an older car. Just depends how much you care about the environment. They will only inhibit performance if they get blocked up with crap.

blackbetty · Post by **blackbetty** » Thu Mar 18, 2010 10:22 pm

meh cat or no cat itll still be better for the environment than what it takes to make the "green" prius.and disposing of the batteries one day.

Blues Boy · Post by **Blues Boy** » Fri Mar 19, 2010 11:24 pm

If you replace the cat with a straight pipe your exhaust will be significantly louder. Possibly too loud to get a wof if the rest of your exhaust is loud. I have a RSR header and an Autoexe exhaust and I think it would be too loud without the cat.

blackbetty · Post by **blackbetty** » Sat Mar 20, 2010 6:43 am

dont you just chuck in a kobi(spelling unknown

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Stainless Exhaust

Stainless Exhaust

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