For what you need this will probably work fine. I recently bought something similar for a friend, and while it does display live data, it's rather irritating in that it takes readings, then displays them for a few seconds while it gathers the next readings. A lot can happen that you won't get to see while the display appears to be locked up for those few seconds. There's a reason these are so inexpensive, but they're most likely still a good value.
I don't know what is normal fuel pressure for your car, but most today run around 50 pounds. If yours is high, the Engine Computer will detect a rich condition and set the appropriate fault code, or you'd see high negative numbers for fuel trim values indicating the computer is subtracting from the normal fuel metering calculations in an attempt to correct the mixture.
Sunday, November 23rd, 2014 AT 8:11 PM