Let's say I want to make a custom ITB setup along with a custom set of headers... I want to compete in SCCA SM2 class, so I need something that will focus on midrange as much as possible. And of course, I will focus on my driving a lot too (up to and including SCCA driving school...)
I know there are a couple of programs that folks use out there to help come up with the right lengths for a given cc and RPM range. What are some of the recommended programs/readings that will help me come up with a good base to work with?
I know that there is no substitute for real-life testing, but I want to know where to start in the design process. I also need something that I can use for future projects, so I really don't want to have to send my info in and have someone else do the math for me...

 

does that class allow itbs?

there are good books on amazon that will tell you basics.