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Does the wideband connect to the ECU in addition to a bluetooth device? If so, is it via the 0-5v or is it canbus?
What's the strategy for idle control? IAC valve or just via timing?
Are there any extra inputs being integrated into the harness? Connections for boost control MAC valve?
Knock sensing/control?
Would be interested in seeing more on the harness when it's complete.
Wideband connects to bluetooth in addition to ECU. Has both 0-5v and canbus communiction options.
IAC Valve
Yes, can use for boost control. I believe there are 8 unused i/o's?
It does not support knock control. Their engineers don't believe in using OEM style knock sensors on modified engines.
We will have Alan's production harness in the next couple weeks. The one used on my car previously used production materials but was not routed and shortened correctly.
Their engineers don't believe in using OEM style knock sensors on modified engines...
Hahahahaha 🤣 that's aggressive; are there other types of knock sensors we can use that they'd be willing to work with? Or is this a "full send, don't worry about it" sort of situation?
Hahahahaha 🤣 that's aggressive; are there other types of knock sensors we can use that they'd be willing to work with? Or is this a "full send, don't worry about it" sort of situation?
I think that is a slight misunderstanding; it is not the sensor that is the problem (a knock sensor is a pretty basic device), but it is more about the control strategy, which is unique to each engine block and application. The OEM engineers spend countless hours tuning the knock control to each application (this is mostly based on the specific engine block, bore size, possible accessory drive interference, etc), and it is difficult to replicate in the aftermarket world. The VEMS ECU that I run in my 951 engine offers the capability of full knock control, but it is a lengthy process to set up, so I have it disabled at the moment.
I recommend checking out the HP Academy courses for the full lowdown on aftermarket knock control if you plan on an aggressive tune.
I think that is a slight misunderstanding; it is not the sensor that is the problem (a knock sensor is a pretty basic device), but it is more about the control strategy, which is unique to each engine block and application. The OEM engineers spend countless hours tuning the knock control to each application (this is mostly based on the specific engine block, bore size, possible accessory drive interference, etc), and it is difficult to replicate in the aftermarket world. The VEMS ECU that I run in my 951 engine offers the capability of full knock control, but it is a lengthy process to set up, so I have it disabled at the moment.
I recommend checking out the HP Academy courses for the full lowdown on aftermarket knock control if you plan on an aggressive tune.
This is a good explanation. Even something like the motor mounts has a massive effect on knock control and there are too many variables to count on knock control as a means to save an engine. It is better to leave 5% power on the table in the tune than run it on the ragged edge and use knock control to pull timing.
02-15-2020, 12:40 PM
Performance Electronics 8400 ECU
