I was searching the web and i came across this post on a site.
Throttle body modification:The throttle body modification isn’t going to be the biggest gain in hp in the world, but the best part is, it’s FREE! In case you missed that, yes, its completely free! All you need for this modification is a metal file or a 10mm wrench (depending on what year 300zx). All you have to do is simply remove a nut or a bump of molded aluminum that is sitting right by your throttle cable. This bump or nut is preventing your throttle from being able to open completely. By allowing it to open completely you’ve increased your air flow which increases your horse power.
is this true?! if so is it safe?
