Originally Posted by plAythiNG
i cant see how a "final drive" can only show performance low end rather than the entire rev range. It is the final drive that will shortern/lengthen gearing across the entire rev range.... perhaps at 60mph, the variables included ifferent RPM on the WRX and hence was at a time where max boost was available etc.... its a final drive, it increases/decreases accerlartion across the entire rev range...
The 4.30 or 4.44 is the best all round performer, you get better acceleration without much compromise. The Mazda 4.30/ 4.44 will also be OEM quiet when installed right.
The 4.56/4.57 Richmond gear ratio is also a best performer but, there is compromise with using these gears. These gears are no longer made and can be difficult to find and buy in good used condition. The other issue is, gear whine. These gears sing a bit and sound like a super charger.
The KIA 4.77 is a well made gear set and is OEM quiet but performance compromise is made with this choice. You get the best off the line acceleration to about 3rd/4th gear but after that the performance falls off. Each gear tops out very fast with the 4.77 and a car with a longer gear will catch up and pass you.
If you don't do much highway driving and your looking for 0 to 60mph fun this is a great choice.