OBDeleven Bluetooth scanner for B4 IQ/timing

I'm curious if anyone has actually tried to monitor/adjust their IQ using this. Success?

I know Matt-98AHU ( http://forums.tdiclub.com/showthread.php?t=466661&highlight=obdeleven ) got one a while back and was messing with it; sounds like there was some connectivity issues with the AHU system. He said he sent commentary to the company, maybe they've addressed it.

Just curious how useful it would be right now for the specific purpose of measuring IQ during a hammer mod.

Have one already ordered and a Amazon Fire Android tablet that was $50.

For those curious, I've found other experiences similar to the above: http://obdeleven.proboards.com/thread/689/checking-injection-pump-timing-engine