So long LSX :( Welcome GEN V Engine family
10-28-2012 | 11:40 PM
#41
Thread Starter
Piss Pumps for Sale
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From: Moncton, New Brunswick, Canada, The True North Strong and Free!
thats what I liek to hear! They did say the pcm would be HARDER to crack, doesnt mean they will be hard, as far as I know no company ever had trouble hacking gm pcms. Also what I ment by 1500 for headers were 1500 for stainless long tubes, american made, LPP's dont count
10-29-2012 | 12:02 AM
#42
thats what I liek to hear! They did say the pcm would be HARDER to crack, doesnt mean they will be hard, as far as I know no company ever had trouble hacking gm pcms. Also what I ment by 1500 for headers were 1500 for stainless long tubes, american made, LPP's dont count
10-29-2012 | 01:34 PM
#46
Staging Lane
Joined: Oct 2011
Posts: 81
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From: Mesa, AZ
2011 and newer diesels are not supported by EFI Live or HP Tuners.
H&S supports them, but it's not custom tuning.
SCT is supposed to release something eventually and I heard that Banks just released tuning support. Again not a custom tuning option.
H&S supports them, but it's not custom tuning.
SCT is supposed to release something eventually and I heard that Banks just released tuning support. Again not a custom tuning option.
10-29-2012 | 02:48 PM
#47
I have a gauge for that
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From: Huntsville, AL
Greg Banish had an excellent point on the hptuners forum...
Damn 
Originally Posted by Banish
You guys are forgetting that the available injection window for DI is MUCH smaller than it is for port fuel. Port fuel injectors have the luxury of injecting pretty much any time and using up to 100% on-time to get the fuel in the charge. (We usually keep this to less than 80-90% duty cycle to protect the ECU's drivers though.)
With DI, you have a much smaller window of opportunity to complete the fuel delivery. Added to that, the fuel requires some small amount of time to evaporate prior to combustion as well. This means that we now only have ~25% of the previous window available, so we NEED injectors that at almost 4x larger flow rate just to keep up. Part of this is accomplished with higher pressure, and part of it is the injectors themselves having greater flow rates.
Oh by the way, the high pressure pump is also a big limiting factor on available fuel flow. These are neither cheap nor readily upgraded in the aftermarket due to the complexity of the ECU controls for them.
I will not be the least bit surprised when people start running out of fuel delivery on these engines with significant modifications.
With DI, you have a much smaller window of opportunity to complete the fuel delivery. Added to that, the fuel requires some small amount of time to evaporate prior to combustion as well. This means that we now only have ~25% of the previous window available, so we NEED injectors that at almost 4x larger flow rate just to keep up. Part of this is accomplished with higher pressure, and part of it is the injectors themselves having greater flow rates.
Oh by the way, the high pressure pump is also a big limiting factor on available fuel flow. These are neither cheap nor readily upgraded in the aftermarket due to the complexity of the ECU controls for them.
I will not be the least bit surprised when people start running out of fuel delivery on these engines with significant modifications.
10-29-2012 | 03:48 PM
#48
TECH Fanatic
Joined: Jul 2006
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From: K.C.
10-29-2012 | 07:47 PM
#50
GFYS and STFU
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From: Here and sometimes there too.
Wow, I figured that the window would be smaller but I didn't think it would affect it that much. I guess we know why they have injectors that can flow so much! 
Gotcha!! Wasn't aware of that. Glad my D-max is an 06'!
Gotcha!! Wasn't aware of that. Glad my D-max is an 06'!