performance injectors

[TurboSDL]

Are these monark performance injectors a good upgrade to the 617 turbo motor? will i notice any increase in power or mileage? also how hard is it to just install new monark tips instead of purchasing the whole injector? there is a significant price difference.


http://www.**************.com/node/5646 the link i posted might not work i had to edit it so if it doesnt work the site is
www . mercedes source . com / node / 5646 just type in the link in the address bar without any of the spaces i put in there.