Originally Posted by Big Dog
Reply With QuoteI wonder whether an injector upgrade is cost effective - at $80 per it's quite a chunk.
The thing is, what's important is achieving the optimum AFR. Bigger injectors will only help if that the std injector can't keep up i.e. is skewed by the engine breathing better by cam change, flowing , forced induction etc.
Maybe fitting a wide band 02 sensor and booking a bit of dyno time with someone really familiar with the Wolf may be a good start..
The other thing is that the std RV8 14CUX operates bank fire injection - 2 channels. The Wolf 3D afaik can run 4 channels so you can group the injectors in pairs to approximate the firing order i.e. 1+8, 4+3, 6+5, 7+2. Even so, whilst you're injecting into the nearest inlet runner most of the charge is into the plenum "cloud" i.e. the injection timing isn't anywhere as precise as the ignition timing.
So, I kinda wonder if getting gains with new injectors - better idle, response etc isn't more down to an injector in good nick as opposed to better atomisation et al?
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