a/f guage help

[jdmciv954]

i have a b20z turbo in my hatch. the guy before me had tuned it with crome pro. im trying to run higher boost so i hooked up a apexi afc and i need the a/f guage to tune it. the only problem is that you usually ook it up to an o2 sensor but my car dosnt have one. so where can i hook it up too?

[Padawan]

If you are planning to do your own tuning, you should not rely on a narrow-band O2 to monitor the A/F ratio. At the least, you'll want a wide-band gauge, which will include its own sensor that you can install.

Why don't you have an O2?

[EG-Owns you]

ya the narrow band a/f sucks its just basically a damn light show waste of money i wouldn't tune anything by it get a wide band and how don't u not have a o2?

[jdmciv954]

the ecu was acually bought off of a website and it came pre tuned you tell them what motor and how much boost and all of that and it canceld the o2 sensor. and then after he got the ecu he put crome pro in it and tuned it but never gave me anything to hook it back up. so im probly now just going to get it dyno tuned wants i get the money to save from all the hasle. thanks for the help though

[Destroy]

waste of money