ok. So do i need 2 simulators or what?

 

you need 1 simulator and 1 senser to go into the cat. otherwise you will through cels all day

 

Yeah no reason for 2 O2 sims, just one for after cat.

 

it needs to read air2 fuel. so it can run properly

 

Ahh.. thanks guys. I wasnt sure. But thanks for fessing up when I was talking about that particular thing in one of my threads. [sm=rolleyes.gif]

 

Ok so i just need an o2 sim. the o2 sensor is already on there correct?

 

yes. you might need to extend the wires a bit. but it shouldnt be a problem. got a saudering iron?

 

Yeah I think im going to have it done at a shop. Seems like to much for me to do. Not much experience in this field.
So if i am wanting the Skunk2 exhaust for an EX i need EX headers EX hi flow cat and EX Catback with an o2 simulator correct?

 

what is the dirrence in 4into 1 headers and 4-2-1?

 

4-2-1 is more low-end power while 4-1 is more high end power...