Jiggy_One

Your car will run like $hit. Mine did, and after I cleared the engine codes, it ran noticably better and felt faster...no bs.
Brian

sickspeedgt

no thanks montana, i have some ordered, just waiting for them to arrive, am i gonna have trouble finding the o2 sensor. I heard installing mils is like a 10 min job. maybe 25 minutes for me

mustang_montana

there are 02 sensors right after the headers, and then some towards the mufflers in the back. there are 4 total, you only need to put the mils in the last 2 or the first 2. if you plan on doing a sc or turbo later on, i think you will need to have your real 02 sensors back in.

sickspeedgt

so it doesn't matter which sensors i hook them up to, Front or back, will work?

mustang_montana

well i think if you hook them up to the back, then why need the front ones if the computer reads the last ones as fine? anyone else know the answer to this?

jishead

YOU MUST hook them up to the rear O2. If you hook them up to the front you will do the opposite AND you will freek out the puter. Here's why (my own beliefs, feel free to disagree on what I have researched and learned):

- You front O2's are used by the computer so determine if you are running rich / lean etc. You do NOT want to scr3w with that signal do you? By removing cats (offroad pipe), you have not changed anything for the front O2's to even care or detect.

- Your rear O2's are only used to determine if your cats are working. Let's say that your front O2's are switching (as a result of engine running) at a rate of 60 times per second (I made that up, that's not a real number). Then, after your cats, let's say that your rear O2's are switching at 60 times per second (I made that up, that's not a real number). That would indicate that you don't have ANY CATS and your computer will turn on the lamp CEL and that's that. You don't want your lamp on because you'll get tired of looking at it and you will never know if you have a real problem. Your engine will run fine. So, when your engine is warmed up, and only under certain circumstances such as cruise (not WOT), etc, your engine will compare (calculate) the switching rate of your front O2's (before cats) to your rear O2's (after cats unless you have removed your cats). IF YOU INSTALL MILS on your rear O2's, if fakes out your puter into thinking that your cats are working fine because you have removed the nasty hydrocarbons and therefore your rear O2's are switching slower than your front O2's and everybody is happy. The MILs are only a $0.79 resistor/capacitor (RC) circuit designed to take an encoming signal and slow it down essentially to make the puter think that you have a healthy set of cats. I drove both of my cars on with the (I think it was (P0430) engine code before I made both of my MILs and it ran fine and later I made my MILs and have put like 10,000 miles on them and life is good.

I hope this helps!