Since I just got a new TV I wanted to add engine monitoring gauges. In my F150 I had an Edge Tuner and it was really good for monitoring engine parameters. For my 2010 F250 I wanted just the monitoring ability without a programmer since I want to keep my warranty for awhile. (Yes, I know about the dealer having to prove the tuner causing the damage, I just didn't want any hassle right now.) I wanted to compare engine monitoring gauges under $200. These are 3 I found: Scangauge, Ecoroute and Ultragauge. There may be more, but these seemed to be the most popular. I didn't look at the torque app since I have an Iphone and it's not compatible.
I compared these products:
Scangauge II ($159.00) ScanGaugeII : Linear Logic - Home of the ScanGauge
Ecoroute ($99.00) https://buy.garmin.com/shop/shop.do?pID=38354
Ultragauge ($69.95) UltraGauge Automotive Information Center and OBDII Scan Tool
Initially I was set on getting the Ecoroute because it's compatible with my Garmin GPS. Then I saw the Ultragauge and was impressed at its low price, but to me both of those products weren't really diesel engine friendly. I wanted as a minimum Transmission Temp gauge and neither offered that option. I then started looking at the Scangauge II closer and discovered the ability to customize the gauges. If you use the XGauge function of the Scangauge you can program custom gauges dependent on the vehicle. For my 6.4L it allowed me to add these vehicle specific gauges:
Transmission Fluid Temp
Engine Oil Temperature
Mass Fuel Desired
Exhaust Back Pressure
EGR Valve Position Desired
EGR Throttle Position Signal
Fan Speed Sensor
Gear (which gear the transmission is in)
Intake Air Temp
VGT Duty Cycle
Exhaust Gas Temp (before catalyst)
Exhaust Gas Temp (after catalyst)
Exhaust Gas Temp (after DPF)
Boost (turbo or supercharger)
All 3 gauge sets allow you to monitor an amazing amount of engine parameters. Just to mention a few: Instant MPG, average MPG, Engine Trouble Codes, Engine Coolant Temp, RPM, and some of those in the list above.
All 3 have their goods and bads, but they're more dependent on user preferences then anything else, for example; the Ecoroute requires a Garmin GPS or an Android phone. A plus if you have either, a minus if you don't. You would need to weigh which meets your requirements best. If I had a gas engine I don't think you could go wrong with the Ecoroute or Ultragauge. The Ultragauge is really a good for what you get for such a small price. If you have a diesel I think the Scangauge II is the best bet and that's what I ended up buying. I bought it from Autozone for $159 and got a 10% military discount. I then spent an hour or so yesterday setting it up and customizing the additional gauges it offers for my 6.4. So far, I'm really happy with the Scangauge II.
Hope this helps anyone thinking of adding gauges.