Quote:
Originally Posted by steve shadows
The lag time control is ok to help scale the injector over it's entire operating range and you can adjust the hertz.It depends on tuning though and the quality of the injector.I dont suggest running larger than a 850 CC injector with the Power FC.
The more advanced standalones like the Haltech P1000 and P2000, the AEM EMS allow a lot more adjustment to the dead time, injector impedence selection and type of injector scaling and flow you are working with.
The PFCs even with all the right calibrations just never purr quite as well with the larger fuel injectors. Also don't use low impedence fuel injectors with the PFC. I suggest using only High Impedence direct drop in denso style fuel injectors for a street car.
It has a lot to do with VE also (Volumetric Effeciency) in my practical experience. The cars with more VE or larger tend to be able to runt he larger fuel injectors off the PFC without needing the more detailed injector mapping functions found on more advanced ems. However there are little things you notice like slight sputtering at idle or high idle condition even with IACV and prime map enabled and configured.
Good luck either way. I would go with a more precise unit if you are getting that serious.
You can get the PFC to run just about anything without having those very detailed dead time mapping controls and injector calibration tables for VE but the places you will see differences are in your low throttle tractive effort AFR response and possibly idle.
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hey steve. i spoke to you along time ago about doing a remote tune for my car and power fc. my set up was a lot different back then and i never got it running. I have since gone a much different route. i recently just told my friend ryan here in alberta about you and your services and you sent him a tune which worked out pretty well. well i was just about to contact you for a remote tune for my set up. i have already gone to top feed low impendence injectors with a resistor box, and would like to stick with that set up. i don't mind a rough or high idle. should i stick with my 1000's or get some 850's?