is there any where were you can get bigger injectors and wat are the stock ones in a 98 altera (how many cc) and would this change the performence of the engine atr all ?

stock is 210cc!
and yes you can at most performance shops, most do on an exchange basis though!
cost dunno

p.s it's useless to upgrade injectors if you dont have a rising rate pressure regulatorand aftermarket fuel pump.

ok ill remember that thnxs

no problemo