Racing Girl World: I Have A God-level Modification Entry!

[New themes you have never seen before] [Racing Competition] [Sweet Development] [Martial God Mecha] [Cat Girl] [Goose Gate Nirvana]
This book is also called: Let you modify the machine girl, will you let the machine girl support the wall? !
The white-haired cat girl lives on the street because of her poor performance.
But only I can see her hidden talent...
This is a special world where a humanoid girl can transform into a supercar on the track. Girls are called machine girls. There is also a mysterious group of people who make a career out of modifying machine girls, called tuners.
My name is Su Chen, China's chief tuner and a top driver.
They all call me God's Hand and Fortune Teller.
Because the machines I modified have the ultimate performance.
The specialized type of cat girl with weak performance can also be transformed into a dump truck that can take off for anyone.
The cold sister who was scrapped due to excessive modifications became the queen of the track again.
Even the out-of-control robot girl known as the 'killing machine' can return to the track.
…
But they don’t know that extreme performance is just a giveaway.
The real modification is actually:
Stature +10
Appearance +10
Body fragrance +10
Sexiness +10
…
And - the mecha restrictions are lifted!