I have a 1990 1.6 with a stock greddy kit, only thing i added to the kit so far is a FMIC. I will be adding a DIYPNP for engine management. I have 2 injectors what went out, confirmed this by swapping injectors to a different cylinder and the mis-fire followed. I don't plan on tuning it for big power(250+HP), I want reliable power as this is my track car. With that said what should I be looking at in terms of injectors?

Next question I have is a total noob questions, what controls the flow of fuel in the injectors? For example, 550cc injectors, does it flow 550cc all the time? Or does the ECU say hey I know you can flow 550cc, but I only want you to flow 300cc.

 

Buy these injectors: https://www.miataturbo.net/miata-par...-%24275-92630/

Injectors are controlled by ECU and are turned on for varying amounts of time based on the needed amount of fuel (as defined in your fuel map).

​​​​The rated flow of the fuel injector is based on it's flow at 100% duty cycle (wide open) at a given fuel pressure.

At least that's what the past 5 minutes of google fu have led me to believe...

 

I was just looking at that post.

 

I've got zero affiliation, but that's what everyone recommends for lower power goals on pump gas and that deal will save you a few bucks. I recently bought some stuff from Flow Force and was completely satisfied with the experience.

 

Flow force are good injectors. We have a set running on my friend's car with an old FM Link and what is left of a greddy kit. (Upgraded manifold and downpipe, fmic, different intake... So the turbo and turbo location are all that is left of the original kit.)