Hi, you will always be limited what injectors you can run with an L1 ecu, if you can afford the cost ,swap to either an L8 ecu from a 4x4 Sapphire or an aftermarket modern ecu which will give you lots of choices for high impedence injectors.Old school injectors are low impedence but big injectors like I run in my 2wd Sapphire ,Siemens 890cc are hard to find these days and are expensive plus you need an extra baby board driver. Cheers Richard.