sparkplug

[Benjawan Kuecharoenwong <u3520170@au.ac.th>]

	Now my car finish service 30000 Km. ,they change all sparkplugs.
But I wonder why they are so expensive (double the price of splitfire).
They're $30 each. and at the box has this message "BOSCH oooo/VW Special"
"heavy-duty center electrode". Do you know,  does "special" means any 
difference from normal sparkplug ?
	Actually I think I gonna use Splitfire ,but when I saw that
the OEM is "heavy-duty center electrode" ,I'm not sure whether Splitfire
can long-lasting in turbo car.
	Any comments ? Should I buy Splitfire ?

			Thanks