chrisgrant91

How much power will you gain? and what needs to be done to the o2 sensors? will this set a code off? how do you get rid of the code if it does

02stang2113

As far as horsepower probably not much maybe 5 at best... but i doubt it will even be that. And you can get a tuner or mil eliminators.

chrisgrant91

what do you do with the o2 sensors

vanquish

either turn it off with a handheld tuner, get MIL eliminators, or buy that programmer that only turns off the engine light. I'd probably get the handheld tuner so you can use it for other things too and it's guaranteed to get the light off compared to MIL eliminators.

chrisgrant91

then you dont even put the sensors in?

sv650lex

If you don't put your o2 sensors in it will sound ike an exhaust leak. You can buy or build our own mil eliminators which just go in line or a new tuner.

chrisgrant91

i want to get a pipe to come off the manifold to the pipe undernieth. what do i need to do with the o2 sensors? drill hole and weld a flange on the new pipe? or not leave them in?

vanquish

You're making your own midpipe?

chrisgrant91

yes. maybe

vanquish

You need the 2 most upstream O2 sensors on both banks regardless (the ones before your converters now).

The two after the converters may or may not give problems if they aren't present. I know a handheld tuner will keep the CEL off due to no converters IF the sensors are connected and installed. But if you unplug these sensors I don't know what will happen.

I unplugged one of mine to install a wideband o2 sensor where the stock sensor is supposed to go and my CEL went on but I got someone to help me with my tune and shut it off.