Got a 6.0 2003 studded new heads power max stage 1 turbo new hpop new injectors new icp 4 inch straight pipe new ficm and custom tunes from dyno proven fuel pressure at 60psi and on wot really laggy like almost no turbo once up at highway speeds it's fine but off the line or driving down the road and give it wot and it's just slow any ideas
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