What does it hurt ? Parts brake ? Or does it bog the engine and give you spool lag ? I have launched mine several ways. I’ve left on as much as 30# before and it spins some . I’ve left without being on top of the turbos and it comes alive as soon as I cut it loose . On Tune 5 and with 3.73s it just spun all 4 . Best 60’ and 1/8 mile has been on tune 3 which even netted a 10.0 1/4 ET , that was on 2nd gear launch with it dead hooking . Tune 4 spun some but netted my high 9 run . Hopefully 3.42s should take it deeper into the 9s .