Injector resistor

[szewczyd]

After installation of my PTE 1000cc injectors I have had nothing but problems. I was reading something about whether they were high or low resistance and then I would or would not need a resistor pack? Any info would be appreciated, also when u test the resistance on the injectors do you want the car warmed up or does it not matter?

 

[luv2rallye]

Car/engine temp does not matter for measuring injector resistance. Most injectors need series resistors to limit current flow (especially when they turn off since being inductive they will produce a voltage spike). Your new injectors should specify what resistors are necessary (if any). If they don't ask. Stock injectors have 2-3 ohms resistance and use 5.5-6.5 ohm series resistors (mounted on the firewall). Your larger injectors probably need more current so if you are still using the stock series resistors, I can see a problem (resistors are limiting current flow too much). You most likely need smaller resistors or maybe even none (they have their own internal resistors) - you'll have to ask.