Yes, you put it in place of your front O2 sensor while tuning and the software can hook up to it and then you know EXACTLY your A/F ratio while tuning.

With a regular O2 sensor, it just says whether you are lean or rich, but doesn't tell you the actual ratio haha

So you are basically guessing, if you're lean you dump more fuel, but how much? Do a little bit and scan, do a little more and scan... etc.

Also with a narrowband you can't scan for WOT

 

So i should buy both?

 

Ok thanks!! After i get all this done what do u guys suggest i do as far as mods?

 

Enjoy the car! With a properly tuned 3.4 you should be happy.

If you want to keep going, you will need an intercooler and a cam.

 

X2!

A proper tune will really bring that car to life compared to your current set up with stock pulley and tune

 

Then you will want more and more lol

 

Eh, a high 13 second car is pretty fun. Don't let me get an extra thousand bucks though... Intercooler ftw