Bests & Worsts Reviews from Amazon

This product is very neat. You do have to download an app to actually connect it to your phone. I use Torque Pro, which is $5. There's also a free version you can use but it's fairly limited in functionality. I have used it on both an 06 Cobalt and an 01 Duramax. Both worked fine, however the Duramax is a 6 speed so it sticks out a little in front of the clutch pedal, but not enough to get in the way that I've noticed. On the Cobalt it was very much out of the way. I used it just goofing around on the Cobalt. Used it to read a code and check boost on the EFI Live powered Duramax. (Update: Tried it on a 99 Cavalier, worked great. Tried it on an 02 Jetta TDI, wouldn't work. Possibly the vehicles fault. One of the pins bent somehow and I thought the unit stopped working, but I bent it back and it worked fine. Not sure why it bent like that, I have been careful with it.) It's pretty quick. According to Torque Pro it's picking up roughly 50 PIDS/sec after enabling a setting that supposedly boosts speed. PIDs essentially mean how quickly it retrieves data from your vehicles ECU. It has a slight delay (maybe 1/4 or 1/2 second) but not enough to really notice it. To my understanding, wired units can get up to 100ish PIDs/sec. It's plenty quick enough but if you want the very best you may want to pick up a wired unit. I prefer Bluetooth though. I plan on getting an Android head unit for my car, and then downloading Torque on it and using it pretty much as digital gauges. I will also update (with photos) when I do this, but it will be a while. Good product. Friends and family are amazed by it. I recommend it. My friends and I do a bit of work on cars so it's nice to have a scan tool on hand. Wish they would make an OBD 1 tool aswell.