Terrorist said:But the others do there own work and not outsource it,
How do you do tuning? What parts do you build yourselves?
or are you the middle men who stick the stickers on parts?
yup...
The difference between doing it and doing it properly is understanding "what and why" you are doing it....
as someone mentioned earlier...its understanding the science/physics behind combustion that makes the difference. how can you improve something if you dont fully understand how it works??