This doesnt help me solve my problem......
We didnt know it was broken, just put the foot down, doesnt take much time to hit that kinda boost, i watched it climb to rnd 0.5 bar i wasnt driving dad put his foot down then I told him to stop.
If you must know we didnt know what to expect or to do to fix it really which is why i've posted here. Now we know what to look for wont happen again.