and to any 3rd of 4th gens looking, check this out. it works ok on my 2000, but the newer the vehicle, the more functions will be available. Its called Torque, an app for the andriod based phone that syncs your ecu and phone with a bluetooth obd 2 adaptor. it provides real time information not limited to rpms, gps speed, mpg, oil/intake/exhaust/trans temps, fuel curves, etc... the list goes on. now for my 2000, theres limited options it can do, but it still provided info that my instrument cluster doesnt. you can graph data on runs as well. it also functions as a diagnostic tool for running codes, at which point it will link to your internet and provide a detailed look at the specific code. the app has a free version or a paid, obviously with more functions. the adaptor i snagged off ebay for 20 bucks. heres some basic functions i could get. if its blank in the photo, its not being provided from my ecu.
speed is on point as i was running past a radar at the same time and it was spot on 31.
theres so much to this app that it near impossible to describe. and the dev is constantly providing updates to it, making everything better.