[oldeguy]

Okay. While reading the replies to my post, (Thanks to everyone ), I have noticed that if I don't make any modifications, ie, turbo, exhaust, throttle body, etc, I'm being told that it's best not to do any small modifications. like putting in better plugs, or better wires. Is this because the modifications or changes won't make a difference to fuel economy or performance? I can't afford to put in a turbocharger, or change the exhaust. I would like to, as things need to be replaced, replace the parts with better equipment, to improve performance or fuel economy.