I bought the 2nd one since this post. the downfall of the one listed above is that it reads in 5 second intervals, and is made to monitor driving habits of like teens or empolyees. the one that i bought is about monitoring sensors activily to show u everything. (it also gives u a nice chance to test your 0 - 60 or 0 - 100)
mine was also able to pull a code that other professional readers couldnt read.
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wow.. i was looking for a code reader, but that says it can also read codes.. that is really nice for the price. will this will work okay in my 318ti 1998 bmw? im guessing it goes into your OBDII port so it should be fine, i was jsut thinking about the BMW codes, which can be harder to read.
btw, amazon has it cheaper.. $100 .. haha
i think the downside is that it doesn't collect data ever second. it collects data every 5 seconds.
this one kinda seems cooler..and is similar
http://www.amazon.com/ScanGauge-Comp...=pd_sbs_auto_2 also, this one is the same but collects data every second to show real graphs of proformance.
http://www.amazon.com/ElmScan-Scan-D...8&s=automotive 
CarChip Pro 
Linear Mode
