I have RC750cc injectors and I am upgrading to some Precision 1000cc. I do not know if I need a resistor box though, could someone help me with this?? Thanks

 

you will need one.

 

Are they peak and hold or saturated? Any part numbers on the 1000cc units you have?

 

Those Precision 1000cc are a Delphi Injector, they will require a resistor box from the OP's SLH750cc injectors. It may even be the batch that used to be 440ccs that had their pintle's modified to flow at 750cc and then fail horribly.. so its good he's switching up.

 

Shodan, great info as always. think you could link me with the correct box? I am wondering if the RC750s I have had the box. I dont know...if they do have the box will it be usable with the pte1000?

 

Hard to say. you can simply use a voltmeter and find out if they are low or high impedence. IIRC, the range for Low Imp, read like 2.5ohms, while High Imp read 12.5+ohms. Someone please correct me if I'm wrong on that, though. its been a while.