NaturalJZ

iTrader: (1)

Hey guys, might be a bit of noob questions here and there but please dont tell me to search, because i have searched and i'm merely just making sure of a few things ive found out from searching.

So, my midpipe has a crack or two and is getting annoying. I wanna fix it, but no shop around here would make me a catless one. So im looking at ordering an OBX midpipe (keep in mind im on a college students budget) but not anything else in the exhaust system yet.
Now question is, would having that O2 sensor unplugged throw a code? ive searched and found that its a no if its obd1?
Second question is would it bolt up to stock flanges of y pipe? https://935motorsports.com/catalog/p...f02fc5eff9fe4f i believe its a 3in midpipe but im not sure and i cant call them. It says it will fit to stock headers but will it fit to stock y pipe? thanks guys for any help

car is a 1994 sc300

88supramki

You are OBD1, and yes you will throw a code with your rear O2 sensor unplugged.

Is the rest of your exhaust 3" if not, then there's no purpose in putting in a 3" section in stock piping.

Ali SC3

iTrader: (10)

I dont even think odb1 has an o2 sensor on the midpipe.

I really dont remember seeing one so you may wanna stick your head under there and take a look it may save you some time. maybe if its from california it may have one.
odb2 uses a post cat o2 sensor and your car is odb1.

3" midpipe for a single turbo supra or sc300 will bolt right up.
toyota uses a generic 2 bolt flange that is huge, so it will bolt up to the stock headers and catback.

note a downpipe/midpipe for a supra twin turbo will not bolt right up, the flange sits up higher in the bay.

NaturalJZ

iTrader: (1)

Yes I know its obd1, sadly.

Thanks ali, exactly what I wanted to hear/know.

I'll check if there's a sensor or not, but pretty sure there was last time I lifted it.

INTIMAZY

iTrader: (5)

No sensor. Was just underneath my 92 today.

NaturalJZ

iTrader: (1)

Sweet thanks man, i didnt get time to do that. just ordered obx midpipe

No, the car is 100% stock... but im not even sure if its 3in, thats why i asked, plus im mainly doing it as a replacement that i can use down the road when i do upgrade the rest of the system, as well as a cat delete..

88supramki

a 2.5" replacement would work just fine as well and is probably more readily available.

93MSB

iTrader: (8)

It IS possible it has rear O2 sensor. California emissions required 4wire O2 sensors front and rear even for OBD1 cars. I personally have a 93.5 NA MKIV supra that originated from california and it has 3 4wire O2 sensors, 2 up front on each exhaust manifold bank and one in the rear cat. So depending on the states emissions requirements where the car was sold you may have a rear O2

if you replace it and find out there is one there is a solution to keep the code from popping up: https://www.speedforsale.com/suprapa...coltb1jj204ds4

88supramki

^^

That's pretty clean!

Or you can do this: http://www.mkiv.com/techarticles/oxy...sor_simulator/

93MSB

iTrader: (8)

you could also have a shop weld in an O2 bung

NaturalJZ

iTrader: (1)

yeah i know a shop can put a bung in, might end up doing that.. but i dont see where a 2.5 catless midpipe is more readily available 88supramki..

just checked, my car has a sensor.

Would this fit on my car? http://store.driftmotion.com/static/i-3103-rt006.php
I know ali said not supra twin turbo but im not sure. This will conclude the thread. Thanks

93MSB

iTrader: (8)

yes it will fit, i have one on my car

NaturalJZ

iTrader: (1)

Great! thanks man. Ordering now

88supramki

^^

There is that one, and there is also a blitz one I believe. They both will fit.

NaturalJZ

iTrader: (1)

Possible link? googled it and looked on driftmotion but no luck. Again, thanks for all your guy's help.