In a performance-based class such as Pro Stock, Comp, SS and Stock, many thousands are spent for hundreths, with no guarantee.

In bracket or index racing, the key is consistency, not new bests. Having said that, though, it is always gratifying to squeeze a little bit more out of your junk.

If you are a career test-and-tuner that goes to the track only to chase new bests, well, good luck with that.