Originally posted by 12sec. Civic
Ok, I will try and explain this like I am talking to a 6 year old.
There are 2 main points of interest on your tachometer (The dial that tells what RPMs the engine is revving at) One is the spot where the manufacturer has set the "Redline" this is where they recommend that you shift or else you will damage the engine, it is visible on the tachometer with a Red-Line. When you race with Automatic tranny it will always shift right at the red line.
The other point of interest is the "Feul Shutoff" This is programmed into the computer of the car to cut off the engines fuel supply at a certain RPM because revving any higher would severely damage the engine, There is no spot on the actual tachometer to show you where this is but the only way to tell is to hold R2 when accelerating and wait until the engine starts to surge. When racing, you want to always rev the engine as close to the "Fuel Shutoff" as possible.
Also, when you buy a "Racing Chip" or "Engine Balance" or most of the engine NA Stage upgrades, it will reset the cars computer and it will usually have a higher "Fuel Shutoff" point after you have done some upgrades.
If you race with auto trans, and you want to keep revving past the "Red-Line" and rev all the way to the "Fuel Sutoff" (The higher you rev the faster you go, no matter what, so you always want to rev as far past the "red-line" as possible and as close to the "Fuel shutoff") hold R2 until you reach the point right before the "fuel shutoff", which you will have to remember where this is in your head. let it go right before you are at the spot where the engine will surge.
Go out and experiment with finding the Fuel Shutoff points on certain cars you have upgraded and tell me how much faster your 0-400m's are when you rev to the red-line and when you rev to the fuel shutoff point.