For example Chiliad Challenge 1 gives you no extra percent, neither does the second or third on their own, however after winning all three races you'll be awarded with the percentage. You get no percent for each single car, but you do get percent for the fully completed list.
If you wrote down your percentages after every single objective (as I did) you'll notice the percentage jumps from 0.53% for one objective to 0.54% for the next. What is programmed is that you receive 0.534759358% per objective which is then rounded up or down to two decimal places.
To get infinite ammunition for this or the other weapons tiers, repeatedly enable the code until no ammunition number appears beneath the gun pictures.
If you entered the code correctly, a message will appear.
Note: Falls, explosions, drowning, and vehicle rundowns are still harmful.
There's Los Santos (based on Los Angeles), a gritty blur of smog and violence; San Fierro (based on San Francisco), and Las Venturas (based on Las Vegas), a midnight wonderland crawling with money, sex and corruption.
This massive game spans the entire state of San Andreas, with visits to three major cities patterned on real-life counterparts.