what fuel injectors to use?

[idosubaru]

i'm going to install an EJ25 intake manifold on an EJ18. YES, i know it doesn't "fit" blah, blah blah, i'll take care of all that. i have one question.

 

if i did that, which fuel injectors should i use? i'll be using an EJ25 ECU, which is why i want to retain everything from the EJ25 except the long block.

 

any comments on whether to use the EJ25 or EJ18 injectors? seems to me it would be best to keep everything from the EJ25.

[uniberp]

i'm going to install an EJ25 intake manifold on an EJ18. YES, i know it doesn't "fit" blah, blah blah, i'll take care of all that. i have one question.

 

if i did that, which fuel injectors should i use? i'll be using an EJ25 ECU, which is why i want to retain everything from the EJ25 except the long block.

 

any comments on whether to use the EJ25 or EJ18 injectors? seems to me it would be best to keep everything from the EJ25.

I would think the metering system should match throughout.

 

MAF-MAP, ecu, injectors, FPR should all match. There are probably blips in the curve/mapping that will cause you some oddity, but I think basically it would be like running a 2.5 with a restrictor plate.

 

Whaere can you even find flow specs for those injectors?

[WAWalker]

i'm going to install an EJ25 intake manifold on an EJ18.

 

I just have to ask. WHY?

 

I would use the EJ25 injectors. Shouldn't matter if they have the potental to flow more fuel, the engine management system should adjust injector puls width accordingly for the reduced mass air flow into the engine.

[idosubaru]

I would use the EJ25 injectors. Shouldn't matter if they have the potental to flow more fuel, the engine management system should adjust injector puls width accordingly for the reduced mass air flow into the engine.

that's what i was thinking. people do the EJ swaps enough that it doesn't seem to matter, they're usually just going the opposite direction. unless i find something very compelling i'm going with the EJ25 injectors.