injector question for m20 turbo

[Jaxx_]

Incorrect. Mostly because power goals always end up increasing

As long as you have full control over injector output, use the biggest/highest quality injector you can get your hands on.

I have 2 1.8l cars running 1000 &1300 cc injectors with no issue. Both cars idle better than stock. 2000cc injectors in hand going into a 2.8L (also currently all motor)

I agree to both sides of this argument, to an extent. You shouldn't use a cheap injector with a 5ms opening time when going with big injectors. On a big motor it's less of a problem, but ideally you can use dual stage injection to combat the issues surrounding poor idle with shitty injectors. A high quality injector will generally be able to idle fine, up to a point. I still think that 2000cc/min injectors for a 2.5L motor running gasoline is overkill, though. You can only tune to a certain percentage, I don't know how difficult it might be to tune a motor with hugely oversized injectors.

With that said, my m10 runs 315cc/min injectors from a volvo and idles fine, even with only 55% duty cycle at redline.