Quote:
Originally Posted by FA20Club.com
you can change how much of the total ratio is used from DI vs port. so that varies but both need supply. if you have larger injectors you will empty the rail faster without flow from the intank supply. i can lower port duty cycle by using more of the DI system but the DI system will require more supply so it doesnt drop pressure in the system. hope that makes more sense to you guys. this isnt a std fuel system so normal theory isnt solid here. i have learned from my experience tuning these kits as well as other with different size injectors and pumps.
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So the injector results vs pump results are dependant on how much the tuner uses the DI system?
That makes me wonder about something else.. I wonder if the people having DI seal issues are running really low DI duty cycles at WOT. The fuel could be cooling the injectors, and a low dc might be letting the injectors overheat and weaken the seals. Dunno, just a sudden thought..
But back OT: So it seems to me, that there's a noticeable divide between the tuning philosophies out there. If some are getting results on just injectors and some with just a pump, it seems some tuners perfer to use the PI system instead of the DI system.
I see long threads of heated discussion in the near future...