Basic 808 terminology Q's
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Basic 808 terminology Q's
I'm digging thru the 808 ECU and want to make sure I'm clear on some of the terminology so I can modify it if I need to.
A/D: What does this mean?
Threshold: My guess is that it's a data point that must be crossed before "X" can happen. Correct?
"Fan 1 enable speed AC ON -5 MPH retard": What is the -5mph retard, and why is it there?
"fuel pump slow run": What's it do? If it's like it sounds, why would I want to run this? Wouldn't it lean the motor out pretty good?
Difference between sync and asynch delivery?
Delta? Once again it sounds like a point that needs to be crossed to enable something.
"Block Learn-Integrator Window Value": Whats this? This and a few other things are rated in UNITS. What UNITS is it referring to?
"Block Learn-Minimum BLM Boundary" The high for blm boundary is 1.09val, and the low is .86val. How do I equate this to the 108-160 like I'm used to seeing?
"Block Learn-BLM Learn Window - RPM radius (7 max)" and "Block Learn-BLM Learn Window - MAP radius (31 max)": Whatsitdo? Same thing with the VE versions of them.
What is "sag mode"?
"Inverse temperature term"?
ACSP coolant sensor?
"manfuel"?
"ADBAT"?
JohnL was kind enough to provide info on the injector constant conversions, so I'm good there.
Everything else I have searched on and really didn't come up with anything difinitive.
Thanks guys
A/D: What does this mean?
Threshold: My guess is that it's a data point that must be crossed before "X" can happen. Correct?
"Fan 1 enable speed AC ON -5 MPH retard": What is the -5mph retard, and why is it there?
"fuel pump slow run": What's it do? If it's like it sounds, why would I want to run this? Wouldn't it lean the motor out pretty good?
Difference between sync and asynch delivery?
Delta? Once again it sounds like a point that needs to be crossed to enable something.
"Block Learn-Integrator Window Value": Whats this? This and a few other things are rated in UNITS. What UNITS is it referring to?
"Block Learn-Minimum BLM Boundary" The high for blm boundary is 1.09val, and the low is .86val. How do I equate this to the 108-160 like I'm used to seeing?
"Block Learn-BLM Learn Window - RPM radius (7 max)" and "Block Learn-BLM Learn Window - MAP radius (31 max)": Whatsitdo? Same thing with the VE versions of them.
What is "sag mode"?
"Inverse temperature term"?
ACSP coolant sensor?
"manfuel"?
"ADBAT"?
JohnL was kind enough to provide info on the injector constant conversions, so I'm good there.
Everything else I have searched on and really didn't come up with anything difinitive.
Thanks guys
Last edited by onebinky; 07-10-2004 at 02:09 AM.
#2
i dont know about the rest of the stuff since im new to the 808, but delta means the amount of change like if your tps is at 10% and you squish the throttle to 50% there is a 40% delta..is this right or im i just full of it? anyone ?
oh hey your update to the 808 is looking pretty good from were i stand. thanks again for the file..
oh hey your update to the 808 is looking pretty good from were i stand. thanks again for the file..
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Re: Basic 808 terminology Q's
Originally posted by onebinky
I'm digging thru the 808 ECU and want to make sure I'm clear on some of the terminology so I can modify it if I need to.
A/D: What does this mean?
I'm digging thru the 808 ECU and want to make sure I'm clear on some of the terminology so I can modify it if I need to.
A/D: What does this mean?
Threshold: My guess is that it's a data point that must be crossed before "X" can happen. Correct?
"fuel pump slow run": What's it do? If it's like it sounds, why would I want to run this? Wouldn't it lean the motor out pretty good?
Difference between sync and asynch delivery?
Delta? Once again it sounds like a point that needs to be crossed to enable something.
"ADBAT"?
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Thanks guys, that knocks out a bunch of them for me
Here's the remaining list:
"Fan 1 enable speed AC ON -5 MPH retard": What is the -5mph retard, and why is it there?
"Block Learn-Integrator Window Value": Whats this? This and a few other things are rated in UNITS. What UNITS is it referring to?
"Block Learn-Minimum BLM Boundary" The high for blm boundary is 1.09val, and the low is .86val. How do I equate this to the 108-160 like I'm used to seeing?
"Block Learn-BLM Learn Window - RPM radius (7 max)" and "Block Learn-BLM Learn Window - MAP radius (31 max)": Whatsitdo? Same thing with the VE versions of them.
What is "sag mode"?
"Inverse temperature term"?
ACSP coolant sensor?
"manfuel"?
"LEM"?
Gunny, I forgot to tell you that there is one measurement I couldn't convert. One of the tables is rated in kelvin. I couldn't convert it to F and keep the resolution, and I don't know how to modify the code to add resolution. So if you know how, have at it
Here's the remaining list:
"Fan 1 enable speed AC ON -5 MPH retard": What is the -5mph retard, and why is it there?
"Block Learn-Integrator Window Value": Whats this? This and a few other things are rated in UNITS. What UNITS is it referring to?
"Block Learn-Minimum BLM Boundary" The high for blm boundary is 1.09val, and the low is .86val. How do I equate this to the 108-160 like I'm used to seeing?
"Block Learn-BLM Learn Window - RPM radius (7 max)" and "Block Learn-BLM Learn Window - MAP radius (31 max)": Whatsitdo? Same thing with the VE versions of them.
What is "sag mode"?
"Inverse temperature term"?
ACSP coolant sensor?
"manfuel"?
"LEM"?
Gunny, I forgot to tell you that there is one measurement I couldn't convert. One of the tables is rated in kelvin. I couldn't convert it to F and keep the resolution, and I don't know how to modify the code to add resolution. So if you know how, have at it
Last edited by onebinky; 07-10-2004 at 12:37 PM.
#5
kelvien huh, ill break out the temp formulas to give em a look then only if i need to..he he thanks for the heads up - if you get in a updated or super for it would like a newer copy if no trouble thanks
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"Fan 1 enable speed AC ON -5 MPH retard": What is the -5mph retard, and why is it there?
fuel pump slow run?
ACSP coolant sensor?
sag mode?
"manfuel"?
"LEM"?
(richens the BPW when idle RPM is below the desired value)
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That just answered alot of questions for me, like why the car runs persistantly rich. And why I still have 140+ IAC counts even when I have all the IAC tables 0'd out.
Thanks
Thanks
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"If the conditions are suitable, a dropping resistor can be swithed in to slow the fuel pump and reduce the fuel pump noise."
Does this require some sort of external module to work?
"Manifold fuel"
Can you elaborate on this one?
Does this require some sort of external module to work?
"Manifold fuel"
Can you elaborate on this one?
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Re: Basic 808 terminology Q's
Originally posted by onebinky
Difference between sync and asynch delivery?
Difference between sync and asynch delivery?
Async, means every 12.5 msecs, and based on clock cycles, rather then DRPs.
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Re: Re: Basic 808 terminology Q's
Originally posted by Grumpy
Sync means in sync with distributor reference pulses.
Async, means every 12.5 msecs, and based on clock cycles, rather then DRPs.
Sync means in sync with distributor reference pulses.
Async, means every 12.5 msecs, and based on clock cycles, rather then DRPs.
Three items left to ID:
"Block Learn-Integrator Window Value": Whats this? This and a few other things are rated in UNITS. What UNITS is it referring to?
"Block Learn-BLM Learn Window - RPM radius (7 max)" and "Block Learn-BLM Learn Window - MAP radius (31 max)": Whatsitdo? Same thing with the VE versions of them.
This one I think I figured out:
"Block Learn-Minimum BLM Boundary" The high for blm boundary is 1.09val, and the low is .86val. Since I'm converting this from analog to digital, I just multiply the value by 128 to give me my number with the swing point of 128. Correct? EXAMPLE: .86x128=mnimum BLM of 110.8
Thanks guys
Last edited by onebinky; 07-11-2004 at 06:40 PM.
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Anybody know these last couple?
The issues I'm having with the 808 are slowly ironing out.
High idle is taken care of except for the occasional flare, and I'm getting the o2 reading down slowly but surely.
With very minimal tuning the car feels MUCH more responsive than it did with 3 months of MAF tuning. All you guys preaching MAP are definately on the right track
Also, contrary to what alot of people are saying, it seems to be much more straightforward to tune a MAP car compared to MAF. I won't say it's easier, but definately seems more straightforward
The issues I'm having with the 808 are slowly ironing out.
High idle is taken care of except for the occasional flare, and I'm getting the o2 reading down slowly but surely.
With very minimal tuning the car feels MUCH more responsive than it did with 3 months of MAF tuning. All you guys preaching MAP are definately on the right track
Also, contrary to what alot of people are saying, it seems to be much more straightforward to tune a MAP car compared to MAF. I won't say it's easier, but definately seems more straightforward
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Car: Australian 1990 Nissan N13 Pulsar
Engine: F18E
Greetings all. I'm new to these forums, so hello from Australia!
I've been tuning my car (F18E equiped) based on the '808 and the $5D ECU mask with much success (of which a good portion must be attributed to JohnL via the Pulsar forums in Oz), but I'm still in the dark regarding many of the parameters in the mask. 'AE' and 'manfuel' mean nothing to me presently.
"Manifold Fuel" sounds great, but it still means nothing to me. Can anyone help?
"AE" could stand for Accelerator Enrichment I suppose, but I'm used to the expression throttle enrichment. Are we talking about the same thing here?
Any help anyone can provide is much appreciated!
Dave.
I've been tuning my car (F18E equiped) based on the '808 and the $5D ECU mask with much success (of which a good portion must be attributed to JohnL via the Pulsar forums in Oz), but I'm still in the dark regarding many of the parameters in the mask. 'AE' and 'manfuel' mean nothing to me presently.
"Manifold Fuel" sounds great, but it still means nothing to me. Can anyone help?
"AE" could stand for Accelerator Enrichment I suppose, but I'm used to the expression throttle enrichment. Are we talking about the same thing here?
Any help anyone can provide is much appreciated!
Dave.
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Car: 1967 C10 Pickup
Engine: TPI 305, Megasquirt
Transmission: TH400
I am starting a 165 to MAP project right now.
I currently have a 305 TPI with Megasquirt II.
I have a 165 ECU kicking around and a 87 vette memcal i'll throw a EEPROM on and use the $5D code.
I am using 1989 Throttle Bodie ECM connectors, all the power/data wires are in the correct location for the 165, and most of the wire colors match a 165 schematic. This should be easy.
anyways....just chiming in.
I currently have a 305 TPI with Megasquirt II.
I have a 165 ECU kicking around and a 87 vette memcal i'll throw a EEPROM on and use the $5D code.
I am using 1989 Throttle Bodie ECM connectors, all the power/data wires are in the correct location for the 165, and most of the wire colors match a 165 schematic. This should be easy.
anyways....just chiming in.
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