computers necessary

[twinz]

are the blitz computers necessaryor are they just a different way to read certain stuff about the car. i know different computers for cars have different uses.

[Someguy]

Necessary for what? What exactly are trying to do?

[twinz]

are the chips just for reading temp speed hp etc. or do they help gain hp?

[Someguy]

A chip can change the air/fuel ratios, ignition timing, shift retard, red line, and some other stuff. With no other modifications you may see some power, but not a whole lot. With bolt ons such as intakes, headers, and exhaust sytems you will see a little more. Changing the computer or adding a chip becomes a significant advantage if you've done head work, cams, internals, or forced induction. A custom chip produced from a dyno tune is the best way to go.