Re: Help for Evo 6 Water Direct Port Injection
I'd go for at least the 0.4mm Typ c jets. That's what I was using on a way less powerfull engine.
For 500HP you should consider 0.5mm jets. Just ensure you can properly control the flow in case your ignition system can't cope.
Don't run too rich either. At any AFR (indicated on gauge as petrol equivalent, not true fluid flow) below 11.8 or indicated lambda of around 0.79 power will drop rather quickly with the water doing its thing.
If you get knock issues before hitting MBT at lambda 0.8 to 0.85, add more water/meth.
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