by mushroom_curry » Tue Mar 17, 2015 2:17 pm
One thing that a tune could likely govern is injector spray duration.
Now if the time the injector is spraying is limited by the window of time that the injector has to fire (RPM), then there still must be some wiggle room here to spray longer or shorter durations of time... although these would be very small changes.
SO unless the tune really focuses on the expected moment in time that boost builds in the RPM range, and then trims or expands injector spray time accordingly, then I can appreciate why there would be a different tune catered to a specific big turbo. However, in the K04 and GT28RS category, I would imagine the two are faiiiirly interchangeable. Not optimal, but it would all still work, except for maybe running a bit rich down low and some odd spikes through the power band where boost production differs.
I saw somewhere that some newer cars instead of using a chip have a tuning system that piggy-backs off the injectors to increase power? If this is achieved by managing injectors and say working within the limitations of time during a full engine cycle/rotation to up fuel volumes by a certain percentage, then this makes sense as a power increasing tactic.... even on an N/A vehicle.
Which, come to think of it, makes me wonder how much HP my VR6 is making on standalone with the current tune I have loaded... and how much a chip in an N/A setup really does to improve power via injector control (especially when the chip is a cam-specific one that considers valve timing).
Which, come to think of it, makes me wonder how much HP my VR6 is making on standalone with the current tune I have loaded... and how much a chip in an N/A setup really does to improve power via injector control (especially when the chip is a cam-specific one that considers valve timing).
Last edited by
mushroom_curry on Tue Mar 17, 2015 2:32 pm, edited 2 times in total.
you won't curry any favours with me.