I was just wondering, In your gallery it says "true duals" on 95 did you have 3 or 2 cats? The reason i ask is that I got a set of heads from edelbrock and they told i have to run true duals, But to do this i have to buy this part called a o2 sensor simulator (Sends a reading to the computer that the "downstream" o2 sensor is working as advertised) Then i can take the 3rd cat off and run duals with a x-pipe and wha-la 400 hp 351W. I pretty sure 95's where OBD-I where my truck is the first year for the OBD-II.

Thanks

 

95 is where obd2 started comming out.

if you have more then one oxygen sensor, you have obd2.

I have true duals and my muff is the equalizer, its a flowmaster 40 knockoff.

I think i have 2 1/2 pipes on there. I dont recall. It really needs some headers, but i'm not going to spend the money on the truck. I have the typical passenger side cracked manafold. I smear some putty on it every now and then, it works for about 200 miles before it blows it out.

I do not run any cats though. so.



I dont know anything about running headers and haveing to run true duals...

The reason for the sensor fooler is that with true duals you can only monitor one pipe, which gives false readings.
if you run an X pipe, or an H pipe, you can mount the first o2 sensor between there.

The thing that fools the sensor is probably just a resistor. a sensor basically tells the computer a reading in resistance or in voltage.
If you change the voltage or resistance, you change the reading.

maybe we can find out what the resistance you need to send is and just make our own.
I'll ask coonhunter joe in the other forum i visit, he might know.

 

Thanks alot, I've been reading a ton of articles on this simulator thing and seems pretty easy to rig up. My truck came from california and it has manifolds then a upstream o2 sensor on each manifold then a cat onto each pipe, from there it goes into a y-pipe then anothor cat with a single downstream o2 sensor. My problem is i need to get rid of the 3rd cat. I already bought the High Flow Cats, and headers(has holes in the collectors already) just need to buy or make that simulator! If coonhunter can tell you the voltage it needs to be i can have my electrian whip something up.

 

http://www.mkiv.com/techarticles/oxy...sor_simulator/

Say thanks to our michigan member cuda jim, who i have a hard time getting here regularly.

 

Are those wire diagrams for a ford or is that a toyota? Just wondering because on the bottom of the page it said something about toyota.

 

I didn't look, i just passed along the link.

Ask cuda_jim