i didn't test it yet
but the weight.... 70 is alot

i am still working on the CTR
i ran over 2000 miles from 5 CTR

just chaning the weight makes the car alot better
i tuning for hours
and ran many laps
with B spec
over all lap time is the same maybe .4 second different but vary

tuning is to fit driving style
the B spec do better at some turn some worst

the stock getting is more of a over all setting
i used to don't believe stock setting is good

but it does

and
i was tuning this car as well
but i want to finish the CTR

then i found out that every change i make
it improve on some turn
and not so on others
then overall laptime vary about the same with stock

yup
plz try out my CTR ^_^
people don't say much i just want people to say something about my setup

have fun!