QUOTE(JackNg1985 @ Jan 15 2012, 11:34 AM)
Then after three months satukali mod meh. Slow slow touch sikit sikit mah...
ask ask only ma....kena zha ....
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1. 4-2-1 type extractor
This setup gives power through out the rpm range. Drivability at lower rpm is quite good, making it the most suitable setup for street usage. Expect more top speed compare to 4-1 type.
Pro : Good power all across the rpm range, more top speed, good for cruising
Cons : Weak top end power, torque ends earlier
2. 4-1 type extractor
This setup gives more top end power. The low end power is weaker compare to 4-2-1 setup, but usually the power gain is significant from the midrange up to high rpm. This causes the torque range to come later, thus creating more horsepower at high range rpm compare to 4-2-1 setup. 4-1 is best for high revving motors like VTEC and MIVEC (just to name a few.
Pro : More midrange and top end power, higher hp, good for acceleration
Cons : Poor at lows, lower top speed compare to 4-2-1
source
http://forum.zhapalang.com.my/index.php?topic=6104.0;wap2