o2 sensors (How do I turn them off)
 

So I have the xcal3 and I keep getting codes cause I have duel exhaust and I didn't bother to deal with the rear o2 sensors when I got the exhaust done is there a way to take care of this with the tuner

I can do it on my tuner, the X3. If I had my car with me, I would go out there on lunch break and give you step by step directions. But, I Googled and found this guide which may help you.

http://www.sctflash.com/PDF/3000-3015%20small.pdf
Go to pages 6 and 7.

I think you go to the 'program vehicle' menu, 'install tune', 'preprogrammed', or something like that. It will ask you if you want to adjust the parameters. Click 'yes'. You'll come to a menu that you'll be able to scroll through. Scroll until you come to the 'sensors' heading and turn the rear O2's off. That's how I did it on my car, but I don't know if it will be the same due to you having a 94-98.

Just like Black Sunshine said. Before you load the custom tune, you should be able to edit parameters, but only if the tune that you got was unlocked to do so. Some tuners can not add that option so you won't be able to adjust parameters.

on my tuner it only gives the options to turn off the rear 02 sensors

That's good because the front ones are needed to monitor the a/f ratio for part throttle use.

i knew it.... :D