if you go to the SSX website they have a formula for figuring out the injector size you need for hp and cylinders you have. Lets face it our cars stock don't push alot of HP, the 14's are plenty for stock HP, 24's can support up to 250ish to 270 probably NA, so do you really think our whooping 150(120-35 at the wheels needs much more than 14lbers)??
the 19lbs in the 99+ can support the 193 HP easily so why put bigger injectors in them when it isn't needed??