GUYS, I hope I found the problem. After much deliberating, I removed my 850cc low impedence injectors and put in my 190cc hi impedence injectors. I took it for a spin and instantly passed 3500rpm. I got it up to 4258rpm at that point my afr started leaning out and stumbled abit. Not sure if the size of the injectors, tuning, and spark, is the reason why. In the data logs I captured , from what I can see I had no spikes. So would just buying large hi impedence injectors be my best bet? Can someone look at my log and see what they think?

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