what is the use of a resistor box? im trying to install some dsm 460 injectors
and it came with a resistor box i have a rev-hard turbo kit will these injectors
help evenif its not tuned yet.

 

you'll need to get it tuned to run right.

When you install larger injectors, it needs to get tuned.

 

what if i dont tune it?

 

what injectors can i buy so i wont have to tune my car?

 

if you dont tune it, chances are you'll be having fun with doing a rebuild.

 

If you won't tune, car won't work. You're doubling the amount of fuel going into the engine with 440+ injectors. have fun rebuilding that.

If you're really going to cheap it out, the max you can get are 310 injectors. those are at the limit of the ecu's 30% ability to compensate.