i have an 05 gtp and im getting a tune soon and the guy that is tuning my car told me it will be good if i get this aem gauge. ok i have a zzp 3" downpipe with cat. will the o2 sensor from the wideband hook up to my downpipe or will i have to modify it? i don't know much about gauges or car computers. i just know i have an o2 extension bung on my down pipe. any advise??![]()