I would also like to add , that motor temp while breaking it in is very important

do not go over 200 or under 170 while breaking it in get it up to temp

then cycle it to 195 - 200 at no more then 3/4 throtle make sure to let the

motor cool down to room temp between runs . I always pre heat and

also I do not tune the motor until it is up to temp if you put the car down

on the track for the first time on race day and it is super fast right off

then it is most likey too lean to begin with ( richin it )