Quote:
Originally Posted by Element Tuning
I'm not running a factory ecu, I'm running a Hydra EMS first off. The direct injection to port injection strategy differs from the factory ecu. Now while you could tune your Hydra to very closely mimic the factory strategy I've chosen to tune them more independently and I run as much fuel as I can through the DI injector to help keep it cool and to cool the combustion process. I then use the port injectors to suppliment the DI and to provide the overall fuel volume I need for more power. We also have DI pump control and in some areas I may be easier on the DI pump and other areas run it harder to get the extra DI flow I want.
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Thank you for the explanation. Since the DI have rubber seals on them that can get too hot and melt. Couldn't there be a different way; maybe a different head or work around that can use say a metal threaded injectors instead of rubber seals so the cylinders don't leak from the direct injectors? Your engine sounds fantastic... but that's doing a whole tear down and rebuilt for racing which is quite a different need for a street car like mine that will never track. 100% agree if you can build a reliable track car that the street car can be reliable too; but the cost associated is significantly more.
Is it the only way to fix the DI seal issue is to do as you said where you reverse the way the engine is fueled? The DI gets all the fuel it can to cool the rubber seals and the port injectors are the supplement.... can it be though if the engine still gets to hot that the seals eventually will still cause a leak from heat damage of the seals?
So if I had force induction bolted on...then I got an engine tune where the DI are the main fuel source and the port injectors are the supplement fuel supply...will that be enough for say 250 to 300WHP and have a reliable motor?
I'm sure the motor will need an oil cooler and intercooler, but just want to know how reliable is this route given your experience and expertise in this matter. Thanks for the advice Phil.