Ok I went to the dragstrip and ran 4 times

8.7 on #2
8.5 with .083 jet nitrous
8.4 with .102

8.4 with .102 and at the end of the track I had a White puff and the light came on... Didn't have the laptop with me but th truck was running fine.

Drove home had no problems, gave it alittle throttle to check boost, it stilled boosted. Got home checked the codes.
P0238 EPA
P0238 M
U1301 H
Ok I looked around and non fit my problem... Is my turbo gonna fall on its face or did I not change enough stuff on efi Live?
Also Ive been gettin Turbo bark/Wastegate flutter more often. If I ease in to it then hit the Gas... It sometimes flutters/barks as if I just did a burn out...
I turned P0234 off when I tuned but I never adjusted the overboost high(C0805 Engine Diagonostics, Boost: Over Boost Limit - 5.1).