2003 sxt - rusEfi test mule
2003 sxt - rusEfi test mule
My 2003 sxt is a test mule for my open source ECU project.
I hope I've got a great deal - less then $1k for a 101K miles manual with current inspection. Looks like there was a hit into one of the rear wheels or something since the bearing and strut mount are shot, but that's an easy fix.
As for the ECU project, the board is ready
I've already extracted a connector from a donor used ECU
So now it's the question of simply wiring everything up.
See also: http://forums.neons.org/viewtopic.php?f=18&t=410462
I hope I've got a great deal - less then $1k for a 101K miles manual with current inspection. Looks like there was a hit into one of the rear wheels or something since the bearing and strut mount are shot, but that's an easy fix.
As for the ECU project, the board is ready
I've already extracted a connector from a donor used ECU
So now it's the question of simply wiring everything up.
See also: http://forums.neons.org/viewtopic.php?f=18&t=410462
Last edited by russian on Fri Oct 31, 2014 6:57 am, edited 2 times in total.
When I've started this two years ago I did not realize that making an ECU from scratch would take so long. At this point I am just enjoying this as a hobby, hopefully I will run this ECU at a Lemons (amateur endurance road racing) race in 2015 or 2016. We'll seeGnuserup wrote:interesting, what are your plans ?
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Maybe link your thread from neons.org. We don't really have any issues with sharing info from other forums here. (If that's why you didn't)
The more knowledge the better.
The more knowledge the better.
Bill
1999 neon coupe 2.4 swap
2021 Forester
2000 Neon MTX swap with '02 R/T PCMOlha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
1999 neon coupe 2.4 swap
2021 Forester
neons link added into first post
Also I've finally started this thing today!
Ops, no youtube embedding here?
http://www.youtube.com/watch?v=PhIWAPaUnYM
Also I've finally started this thing today!
Ops, no youtube embedding here?
http://www.youtube.com/watch?v=PhIWAPaUnYM
So my 2ng gen does not have a timing mark right? I've made my own mark more or less where TDC should be - that's the longer mark. the other marks are 10 degree apart (at least I hope they are - 16mm should be 10 degrees considering 93mm pulley radius)
http://www.youtube.com/watch?v=QHzr-K8jmqA
that's rusEfi idling
http://www.youtube.com/watch?v=xcxzZYOdPJs
http://www.youtube.com/watch?v=QHzr-K8jmqA
that's rusEfi idling
http://www.youtube.com/watch?v=xcxzZYOdPJs
http://www.youtube.com/watch?v=14n-xKUQg5E
Does anyone know anything about alternator field wire? Is it ground or battery +, is it on/off or PWM?
Does anyone know anything about alternator field wire? Is it ground or battery +, is it on/off or PWM?
pwm to ground.
might be easier to go with an external regulator
http://www.msextra.com/forums/viewtopic ... 31&t=54320
might be easier to go with an external regulator
http://www.msextra.com/forums/viewtopic ... 31&t=54320
Great link but they do not specify if 1st gen or 2nd genfixit wrote:pwm to ground.
might be easier to go with an external regulator
http://www.msextra.com/forums/viewtopic ... 31&t=54320
Looks like 2nd gen the wire goes to battery, not ground.
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I think they changed it in 2003.
Bill
1999 neon coupe 2.4 swap
2021 Forester
2000 Neon MTX swap with '02 R/T PCMOlha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
1999 neon coupe 2.4 swap
2021 Forester
It's hard not to understand electronics, so far I am failing to control the alternator with my ecu. Here are the details:
Resistance between field wire and ground: 12 Ohm
With the car running with rusEfi, if I manually connect field wire directly to battery positive terminal I can see how the car RPMs go up (load goes up?) and the voltage goes from 12v to 16v. This tells me that's the right wire I am messing with
Next step - I am trying to control the alternator with my ecu.
I have 400Hz PWM via the hi-side TC4427 chips. I've tried 60% (~7v), 80% and 95% (~11v) PWM connected to alternator wire to no avail - the alternator does not seem to engage.
Now that I've typed this I've realized that I have a 100Ohm resistor after the TC4427 chip.
I guess my next step would be replacing that resistor with a 0ohm and hoping for the best.
Resistance between field wire and ground: 12 Ohm
With the car running with rusEfi, if I manually connect field wire directly to battery positive terminal I can see how the car RPMs go up (load goes up?) and the voltage goes from 12v to 16v. This tells me that's the right wire I am messing with
Next step - I am trying to control the alternator with my ecu.
I have 400Hz PWM via the hi-side TC4427 chips. I've tried 60% (~7v), 80% and 95% (~11v) PWM connected to alternator wire to no avail - the alternator does not seem to engage.
Now that I've typed this I've realized that I have a 100Ohm resistor after the TC4427 chip.
I guess my next step would be replacing that resistor with a 0ohm and hoping for the best.
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Are the voltages above actual measured at the field connector, or just mathematical equations?russian wrote:
I have 400Hz PWM via the hi-side TC4427 chips. I've tried 60% (~7v), 80% and 95% (~11v) PWM connected to alternator wire to no avail - the alternator does not seem to engage.
Now that I've typed this I've realized that I have a 100Ohm resistor after the TC4427 chip.
Bill
1999 neon coupe 2.4 swap
2021 Forester
2000 Neon MTX swap with '02 R/T PCMOlha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
1999 neon coupe 2.4 swap
2021 Forester
that's actual voltage measured on my control wire while it's not connected to alternator (the pieces are not connected yet since I am still trying to figure this out)occasional demons wrote:Are the voltages above actual measured at the field connector, or just mathematical equations?
I've removed the 100R resistance but it looks like I cannot provide enough current into this wire through my control transistor:
idling with rusEfi, +12V on battery => DMM => alternator field wire: 6.5A - engine is jerking up, probably charging. pretty large spark
idling with rusEfi, rusEfi control field control wire => DMM => alternator field wire: 0.5A - engine is maybe reacting a bit, not sure. the spark is pretty tiny. voltage on the battery does not change so I guess no charging
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I wonder if you could use a mosfet to handle the current. The rusEfi control could switch the mosfet for PWM. Mosfets have been successfully used to switch COP ignitions, so the alternator field shouldn't be an issue.
Bill
1999 neon coupe 2.4 swap
2021 Forester
2000 Neon MTX swap with '02 R/T PCMOlha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
1999 neon coupe 2.4 swap
2021 Forester
I am using a mosfet right now - TC4427 - but looks like it's just too weak with it's 1.5A peak rating. What's your favorite mosfet for this application?occasional demons wrote:I wonder if you could use a mosfet to handle the current. The rusEfi control could switch the mosfet for PWM.
I have a DPAK breakout module I can maybe use:
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- Location: Ashland Ohio
The BIP373's are what are used for COP set ups.
http://www.diyautotune.com/catalog/bosc ... p-230.html
http://megamanual.com/ms2/bip373_datasheet.pdf
Hopefully this is helpful.
I know on neons.org they have suggested going with the older external VR, but I can understand your desire to have it all in one package.
http://www.diyautotune.com/catalog/bosc ... p-230.html
http://megamanual.com/ms2/bip373_datasheet.pdf
Hopefully this is helpful.
I know on neons.org they have suggested going with the older external VR, but I can understand your desire to have it all in one package.
Bill
1999 neon coupe 2.4 swap
2021 Forester
2000 Neon MTX swap with '02 R/T PCMOlha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
1999 neon coupe 2.4 swap
2021 Forester
first rusEfi dyno run.
Stock ECU run: 121hp/127 lb-ft
1st rusEfi run ever - wooping 44hp/69 lb-ft. Right, 12 degrees advance does not work so cool
8 runs later: 123hp/128 lb-ft. More then stock ECU! better timing.
We did not tune fuel at all (Speed Density with default table), the plan for the day was to get close to stock values and just test everything. Mission accomplished
full logs
Stock ECU run: 121hp/127 lb-ft
1st rusEfi run ever - wooping 44hp/69 lb-ft. Right, 12 degrees advance does not work so cool
8 runs later: 123hp/128 lb-ft. More then stock ECU! better timing.
We did not tune fuel at all (Speed Density with default table), the plan for the day was to get close to stock values and just test everything. Mission accomplished
full logs