Hey guyz, The time has come for a bit of a power upgrade/tune refinement where this time using 550cc injectors instead of the stock 370cc. What do you guys know about JECS yellow top 550cc? or JECS in general, other than being the OEM manufacturer for Nissan and I'm sure other brands too. A set of the 'new style' are now installed in my Z and the car idles and revs 'smooth as' with a 'base tune for 555's' just to allow the car to start and check for any issues prior to a proper tune. What baffles me though, is that I've been informed that JECS 550's are just normal injectors re-drilled to make them Hi-Flow. I thought... really? Z1 sell JECS as genuine new units of various flow rates here: https://www.z1motorsports.com/fuel-system/jecs/jecs-high-performance-fuel-injectors-p-4293.html so... what's going on? Also, I don't have latency times etc... the rough tune in the car currently is setup for 555's as mentioned earlier. Will the correct/appropriate latency/duration be determined during the tuning process? I'm asking this because I'm wondering... is the 555's injector values entered as a constant on Nistune or will they be adjusted during the tuning process based on air/flow ratios or whatever other data? What do you guys think?