what's the difference between the sport sequential shifter and just moving the shifter to 1 2 3 4 then d5? Is this harmful for your engine?

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Naples Gold Metallic 2000 3.2 TL
Wings West Kit Type-W
Comptech Exhausts
INSPIRE Tails
Cleared Out Custom HID's
00BMW Sidemarker DRLights
Custom Grill

 

Read the owner's manual on transmissions...they explain it quite well,

People should read their manuals after they get the car...explains many of your concerns...go do so now!