a turbo
 

im getting everything ready for my first turbo. im learning about them at the same time. the o2 sensor in my stock jeep is narrowband?, and to monitor air/fuel you need a wideband o2 sensor? iv heard of the obd2 method of finding a/f ratio. what kind can you get for cheaper than a $200 complete wideband setup? and why doesnt every one use the obd2 way of monitoring. after my homemade header is done i may just install and tune at school with one of there scan tools.

I mean get an O2 sensor gauge not the actual sensor. I have a glow shift 02 gauge that i hooked near the ecu from when my civic was N/A and it worked great... looks cool too. if you want to tune you need to buy a wide band o2 (air fuel) gauge and you can use it to trick your computer to think you still have a narrow band. I use a innovate LC-1 that i got from xenocron. You have to order the gauge too. They may have a package deal... not sure. Very very accurate wide band which was proven when i was working at a dyno shop.

You must get this in your head now... nothing will be cheap when you turbo especially a jeep. Its the electonics that get expensive. You can cheap out on the mechanical side though. I don't know what you can do to your jeep as for obd2... you might have to spend alot for a standalone (if available) or maybe use a AFC hack (apexi), a BTM (msd), and the Wide band. Not sure if you can use a AFC on a jeep but maybe. I know you have a map sensor but probably a maf sensor too... it may still work. Unless there is a standalone unit... your only other option is the AFC, BTM, and Wide band. YOur looking at around 800 for all that used on ebay. YOU MUST DO SOME MORE RESEARCH ON A JEEP. Find out what others are doing on a jeep website.