About the unit there good but to a point. I found that when i was using it it one of the biggest problems with my setup was that it only works on a 2d plane. Ie for every voltage input it see's from the afm it can only alter this up or down. So if 3 volts comes in it can bump it up by up to 50% or down by up to 50%
Where as compared to say the e-manage, the e-manage works on a 3d map where it takes rpm and throttle position and from there you adjust the afm voltage, so at say 3500rpm with the e-manage you can have 16 different points of fuel adjustment depending on the throttle position. So for a car with a 7500rpm rev limit you have 240 points of adjustment.
What this means in real world terms is that you can tune the e-manage for all different types of load situations be it part throttle or full throttle, whilst with the dfa you cant. For me with a de+t conversion this meant that when i had the DFA i had a few flat spots when not at full throttle because too much fuel was going in.
This in mind i think you would only see these kinds of problems with a de+t conversion running a DFA because the mapping needs to be so different to factory DE mapping.
The other downside is the lack of ignition timing control. As such if your doing say a de+t you need to wind back the timing a bit to stop detonation when your on boost whilst with the E-manage you again have a 3d load map that you can adjust your ignition timing to suit.
All up if you dont need to make radical changes you should be alright. About nearly blowing up your friends car CTN i dont believe it. Either the tuner had no idea what he was doing or your friend didnt build the unit right. My car was running very safe just quite rich at some load points off boost.
Hope that all makes some sense!
