Yank's brick with MS3X (Noob tuner FTL)
#1
Yank's brick with MS3X (Noob tuner FTL)
Ill keep my tuning related issues in this section.
For reference. Build Thread.
https://www.miataturbo.net/build-threads-57/build-thread-fe3-rx7-tii-efr-6258-ms3-58140/
Finished assembling the MS3 main board earlier this year after i put together the jimstim v1.5. tested it out the best i know how and it looks as though things are functioning properly. (i turn the ***** on the stim and the gauges on my screen move.)
I pulled the stepper style ICV off my car today which came from a jeep grand cherokee 4L and hooked it up to the stim to make sure it works and it looks as though it is also working. Its not very smooth though. probably adjusts 3 or 4 times from CLT pot full off to full on.
Currently not working. (i could be hooking it up wrong) is the throttle position sensor. I made reference to this link via google search..
http://townhall-talk.edmunds.com/dir...w/.f0f8b2b/677
Valid info being...
*****Throttle Position Sensor - check voltage across the (+) wire (Purple/white) and the (-) wire (black/blue). Voltage should be 5.0 volts. Next check signal voltage across the (+) wire (orange/blue) and ground. It should be 0.5 volts. Move the throttle to a fully open position and voltage should increase to 4.5 - 5.0 volts*****
So i hooked up the 3 wires to a 5 volt source on the stim, the ground to ground and the orange /blue (mine is actually Green /red or i'm color blind) to the TPS screw down input. took measurements from ground to make sure i had 5v and also from the TPS input. The 5V checked out fine but the TPS measured 3mV when closed and 12.8mV when full open.
I tried to calibrate it at these low voltage outputs but its way to sensitive to register a gradual change. Any ideas on why this isnt working?
Im also looking for a base tune to start playing with. MS2 or MS3 will work from what i understand. I realize our engines and setups are completely different but i have to start somewhere. I plan on starting out with around 8 to 10 psi to start out. Im also wired for sequential fuel and spark so if its already set up then great, if not i can figure out that bit. Shoot me a PM if you have something i can use.
Thanks guys!
For reference. Build Thread.
https://www.miataturbo.net/build-threads-57/build-thread-fe3-rx7-tii-efr-6258-ms3-58140/
Finished assembling the MS3 main board earlier this year after i put together the jimstim v1.5. tested it out the best i know how and it looks as though things are functioning properly. (i turn the ***** on the stim and the gauges on my screen move.)
I pulled the stepper style ICV off my car today which came from a jeep grand cherokee 4L and hooked it up to the stim to make sure it works and it looks as though it is also working. Its not very smooth though. probably adjusts 3 or 4 times from CLT pot full off to full on.
Currently not working. (i could be hooking it up wrong) is the throttle position sensor. I made reference to this link via google search..
http://townhall-talk.edmunds.com/dir...w/.f0f8b2b/677
Valid info being...
*****Throttle Position Sensor - check voltage across the (+) wire (Purple/white) and the (-) wire (black/blue). Voltage should be 5.0 volts. Next check signal voltage across the (+) wire (orange/blue) and ground. It should be 0.5 volts. Move the throttle to a fully open position and voltage should increase to 4.5 - 5.0 volts*****
So i hooked up the 3 wires to a 5 volt source on the stim, the ground to ground and the orange /blue (mine is actually Green /red or i'm color blind) to the TPS screw down input. took measurements from ground to make sure i had 5v and also from the TPS input. The 5V checked out fine but the TPS measured 3mV when closed and 12.8mV when full open.
I tried to calibrate it at these low voltage outputs but its way to sensitive to register a gradual change. Any ideas on why this isnt working?
Im also looking for a base tune to start playing with. MS2 or MS3 will work from what i understand. I realize our engines and setups are completely different but i have to start somewhere. I plan on starting out with around 8 to 10 psi to start out. Im also wired for sequential fuel and spark so if its already set up then great, if not i can figure out that bit. Shoot me a PM if you have something i can use.
Thanks guys!
#13
I found thirdgen's old AFR table and a few spark tables.. im sure i can find a fuel load one too (good old google search) but the values of this would completely depend on fuel pressure and injector size. What all do i need AFR target, Spark, fuel load,...? I just need to sit down and spend some serious time researching and exploring tuner studio. its hard to devote time to this right now when the car isn't all the way put together though.
#16
I would agrue on the ground thing I've seen difference in voltage from using various grounds, also there is reasons certain devices want two grounds done for reference reasons.
Personally if its calling for a sensor ground, I would run it to a sensor ground wire from the harness.
yank for the fuel whats your injector size and type, for spark table you could probably just uses diyautotunes ms2 base spark map and interoplate to 16x16 cells
Personally if its calling for a sensor ground, I would run it to a sensor ground wire from the harness.
yank for the fuel whats your injector size and type, for spark table you could probably just uses diyautotunes ms2 base spark map and interoplate to 16x16 cells
#17
I would agrue on the ground thing I've seen difference in voltage from using various grounds, also there is reasons certain devices want two grounds done for reference reasons.
Personally if its calling for a sensor ground, I would run it to a sensor ground wire from the harness.
yank for the fuel whats your injector size and type, for spark table you could probably just uses diyautotunes ms2 base spark map and interoplate to 16x16 cells
Personally if its calling for a sensor ground, I would run it to a sensor ground wire from the harness.
yank for the fuel whats your injector size and type, for spark table you could probably just uses diyautotunes ms2 base spark map and interoplate to 16x16 cells
#18
I would agrue on the ground thing I've seen difference in voltage from using various grounds, also there is reasons certain devices want two grounds done for reference reasons.
Personally if its calling for a sensor ground, I would run it to a sensor ground wire from the harness.
yank for the fuel whats your injector size and type, for spark table you could probably just uses diyautotunes ms2 base spark map and interoplate to 16x16 cells
Personally if its calling for a sensor ground, I would run it to a sensor ground wire from the harness.
yank for the fuel whats your injector size and type, for spark table you could probably just uses diyautotunes ms2 base spark map and interoplate to 16x16 cells
Techsalvager thanks for the help! injectors are ID1000s, fuel pump is highflowperformance 255LPH, FPR is a FueLab 52501. Let me know what i should set my fuel pressure at to start out. Ill check the spark map you're referencing and do the interpolation. (Learned to interpolate in my thermo II class last year. haha putting that college education to use.)
Back to the garage.
#19
wait a sec. Dude that's the purpose of REQ fuel in the software. So you can change injectors and fuel pressure and not have to start over.
If you configure your injector cc and psi, the req fuel value will change and should scale your fuel map to be equal. It won't be spot on, but should be close enough that you can sort it.
I have absolutely 0 empirical evidence to support this, but I like to run higher than typical fuel pressure, hoping that it makes atomization mo-betta. Plus it gives your injectors more headroom, which should not be a factor for you.
Industry standard is 43.5psi. I usually go for 80 if you have a pump that can handle it.
If you configure your injector cc and psi, the req fuel value will change and should scale your fuel map to be equal. It won't be spot on, but should be close enough that you can sort it.
I have absolutely 0 empirical evidence to support this, but I like to run higher than typical fuel pressure, hoping that it makes atomization mo-betta. Plus it gives your injectors more headroom, which should not be a factor for you.
Industry standard is 43.5psi. I usually go for 80 if you have a pump that can handle it.
#20
Originally Posted by Ben Berusch
Yes, sensor ground can be called signal ground or sensor return.
Thanks for the help everyone!