Should I solder the resistors for fuel injectors in the engine bay or should i crimp and is there a way for me to do them in the car?

 

There are two wires to each injector. You can place a resistor in either of the two wires. You can choose to do this either in the engine bay or the inside of the car. The ECU contains one of the two wires which runs to each injector.

 

So it won't matter crimping or soldering because im kinda worried about the high temperature breaking the solder bond

 

If you place the resistors in the car (by the ECU) then you don't have to worry about temps affecting solder.

 

If your engine bay is hot enough to melt solder, it's on fire.

 

Yeah, and if it is the lead free ****, your engine block would melt first.