First I want to say thanks for all those that have help others with there question, You just didn't help that person but a lot of others that got the info without asking, I just on of those that got that help. 
I have a DX6i and a RcPowers SU34v4 is doing great. Now a friend cam over with a new DX6i and another SU34V4 same part. same set up. His plane went nose down twice and after a turn or so go stuck in a bank and crasher. After checking his DX6i setting the only difference was he had not put the power setting on US. It was still on number "A-EU". Would that have caused it? Any other suggestion would help. Thanks ahead of time for answers and all the help in the pass. GREAT Site.

I have a DX6i and a RcPowers SU34v4 is doing great. Now a friend cam over with a new DX6i and another SU34V4 same part. same set up. His plane went nose down twice and after a turn or so go stuck in a bank and crasher. After checking his DX6i setting the only difference was he had not put the power setting on US. It was still on number "A-EU". Would that have caused it? Any other suggestion would help. Thanks ahead of time for answers and all the help in the pass. GREAT Site.