Fully built sr20det keeps overboosting

[240boosted]

Hey I have cant figure this out to save the life of me. I have a mazworx setup with a g30-770 kit with a haltech elite 1500 running e85 with dual valve conversion from them and there stage 3 heads and 272 cams with there manifold and a 44 mm tial watergate. I checked all the lines which are push lock lines and I keep getting boost spikes after 6k rpm. If I take out the haltech electronic boost controller it still overboost on just wastegate after 6000 rpm. my tuner cant figure out why it’s keep doing it past 6000 rpm and I running 14.7 psi spring with open dump and 3 inch full exhaust