Originally Posted by JHM2K

Excellent summary, and I think it's something that needs to be said over and over.

I don't regret the larger injectors, I just regret not having the sense (and time/$$$) to get a proper tune before I raced a week ago. Instead, I went down there on an assumption, and paid the price with slow times despite "adding" horsepower.

It's all about the ability to keep X fuel pressure at Y boost. Yes, we all have similar cars but each car is slightly different in behavior. Pumps, filters and injectors all play a role (as does the altitude, etc).

Good writeup.