u need to understand somthing when tuning a 2s it will only rev as fast as it can get the gases in and out so 1.take the restriction coller out of your exshast 2.take your inlet manifold of and put a stanly knife to the restriction coller in there thats all free and your 50 will out acselerate any 125 if uve got some speare cash get yourself a race exspantion chamber and can and a 22 mil carb oh and your dna wont ever brake the 70 mark unless u get an unrestricted cdi but i can think of much better ways to spend £184
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