for me i consider these points
1) never bang the walls (most important)
2) at the major turn where u can view a bridge like structure , u
will need 2 decelerate moderately , brake if necessary.....
3) at another major turn , brakin is not neccessary , but if ur
speed is 180km/h and above , release of accel may help
4) use kohanson's method of out-in-out technique. (2nd most
important)
5) at some point , some cars may experiece the no-gain-speed (this
is wat i call) circumstance , be flexible to this situation and
drop gear if necessary.
thats wat i do....... 
hope it helps 2 beat that irritant..... 