Quote Originally Posted by IC2 View Post
Lean is mean, Dave, that is until you start burning plug electrodes - but you knew that

Now I wish I could find that exhaust piping formula that I used to size for my car. Had I been left to my own guesstimate, would probably have used 2.5 instead of 2.25
I've got a link to buy the software for designing step headers, collectors, and the entire exhaust system.. Got to order it someday, it's only like $45.00. Shows the optimum length of each size in a step header, overall tube length, ideal collector size and length, etc. Definitely going to have it before I build another set of headers!!!!!