Can i run a N333 rtek ecu on a car that originally has a N332 ecu?
I'm asking because of the I have low imp injectors. does it make a difference?

 

Yes you can. The impedance difference is compensated for externally to the ECU with the resistor block.

 

So i would need a resistor block?

 

If your car is an 87, it should already have low impedence injectors so it would have a resistor block already in the harness. Easiest way to check is look under the stock airbox (if you still have one) and look to see if you you have a resistor block.

With that said, I am running an N332 in a car that originally had an N333 ECU on low imp injectors and my own resistor pack without issue.

 

both ecus see high impedence either way, so it shouldnt make a difference. there are no stock "low imp" ecus

 

So how did you add a resitor pack? Just add a resistor inline to the injectors? Like you would a S5 using low imp inj?