BUT its simply bastardising the injector to get it "Close" well as close as you can in an engine. Most people who claim to do these magical things do their trimming on the dyno. Depending on the size we chose we could then be trimming in the low 15% of the Injector trim range allowing for a possible 85% Gain by way of Trim allocation. However if we fit a larger nozzle than listed in the Flash file the engine will produce more HP and we can then trim down the injector to reduce its output and lower HP. However there is a large window from the lowest to the highest but in 95% of case Injectors are Trimmed from the factory Mid range in the case of a C15 for example so you wont see the HP gain of the magnitude above. These is NO Magical numbers as I have tested every single one and plotted them. these groups then can be used to Calibrate an injector to flow across the whole RPM and load range possible. these can then be divided into groups and reduced into some 460 groups. However not all possibilities are used on each ECM so for example a C15 will only take 1/2 of the theoretical 8999 possible trim numbers. The Trim algo uses an and encrypted 4 didget code between 10. The total Gain attainable can be as much as 150HP depending on many factors and the most influential being the Nozzle orifice size.Īcert Trims on 625 or 550 will be lucky to gain 40HP due to the way the factory trims them in the top 30% whereas the older 3406 and C15 etc were trimmed mostly in the 50% range leaving a bigger window to trim up. The injectors you had must have been on the lowest possible trim numbers or was it set to the lowest before the dyno so that when they were then changed to the highest it showed 150HP gain?
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