Pros - reads and clears codes
- provides sensor readings
Cons - glitchy mpg reading
- cheap looking
Summary This is identical to the Scangauge device that I purchased a few weeks ago. I originally bought it to help me diagnose an erratic engine idle issue that my mechanic couldn't figure out or replicate.
A few days later, the idle issue returned and I immediately plugged in the device. I scanned through the readings and discovered that the coolant temperature sensor reading was off. Viola, problem found and hundreds of $$$ saved from replacing parts and expensive sensors that didn't need replacing.
The mpg reading does make me more aware of my driving habits. For example, driving 70 miles per hour instead of 73 miles per hour saves me about 2 mpg. I also try and avoid mashing the throttle which brings the mpg in the single digits.
My only complaint is that the computer trips up at times... sometimes it will tell me I'm getting 173 - 9999 mpg! The erratic readings only lasts a few seconds, so it's not a big deal.
Overall, I would recommend this to gas saving fanatics and/or the DIYer mechanic looking for a good code reader.
Pros (for SG2)
small, easy-to-install (or keep in the car), & doesn't require extra software. Runs on OBDII port power. Depending on how you install it, it can be very easy to remove & carry in your pocket (about the size & weight of a Snickers(TM)
Cons (for SG2)
6ft cable may be too short to place the gauge where you want. OBDII connector on the cable has a snap catch to keep the cable connected - this can make it very difficult to disconnect without breaking the snap.
Summary I don't have this model, but the ScanGauge II has instantaneous MPG, RPM & engine load readouts. I got the SG2 because my Sentra kept going into "limp-home" mode due to a faulty throttle position sensor. The sensor was later replaced under warranty, but before then I could just delete the trouble code to keep the car working normally. It's been well worth the money to have a small, unobtrusive OBDII scanner that not only acts as an additional gauge cluster, but can read & delete trouble codes. No more paying Bubba the mechanic $50 just to hit the "delete" key.
Pros If this is Scanguage, there's really no better "live" tool out there if you want to keep an eye on your engine's ECU and sensors - for more efficient driving, simply for fun, or for keeping an eye on operating parameters to avoid disasters....
Cons Yes, interface is "nerdy" at best, but this is a data device, and by virtue of its small form factor, one most of the time can place it below the speedo, even on top of the steering column (in front of the wheel...) so it is always in plain sight.
Summary Easy to move from vehicle to vehicle, gives accurate readings (as good as your car's sensor). Works as a code reader that CAN save you big bucks before you rush to the shop/dealer for yet another unnecessary and pricy visit (although you probably did not know that since you did not have the data the dealer had access to).