Desperate for some Help With Microsquirt, Beyond Frustrated |
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Desperate for some Help With Microsquirt, Beyond Frustrated |
Mblizzard |
Aug 25 2017, 04:54 PM
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#1
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
I have been trying to get my conversion done in time for Okteenerfest. I have run up against a brick wall and just cant seem to figure out what i am doing wrong.
If anyone can help me by looking at my tune files or providing insight it will be very much appreciated. I can get th car to idle but nothing beyond that. Any use of the throttle is less than impressive and almost useless. Meaning it bogs down and does not accelerate at all. I have no clue what i am missing. 2056 with new low impeadance injectors. Bosch Wideband O2 sensor. Really need some suggestions. Not sure if i can post the tune files here. But will try. |
McMark |
Aug 30 2017, 12:34 PM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Somewhere in the menus you can pull up the 'Realtime Display' which shows all of the readings from the sensors. Actually, realtime display pulls up graphs, and then there's a button to see all the actual numeric values. Post a picture of that, with the key on, but not running. I've recently realized how vital understanding the 'non-running' readings of sensors is. For example, your MAP sensor should be reading around 100kpa while not-running (at sea level). It's pretty easy, once you know, to look at the gauges before you start the car and see if that looks right. Also, when the engine is cold, the CHT and Intake Air Temp sensors should read about the same. If they don't, one of them is configured wrong.
Also, have you used a timing light to confirm the timing displayed on the laptop matches what you see in real life? Oh, and finally, I think it's prudent to turn off all closed-loop interaction while tuning. If you're trying to tune the VE table, and the AFR table is fiddling with things 'behind your back' then you're going to have a tough time because you'll make a change in the VE table, and then the AFR controls will put it back where it was (essentially). Tune the VE table open loop, then once it's running well turn on closed loop. This will make it run worse, until you tweak the AFR table so it runs back where it was. At the end of that process you have a tuned VE table and a tuned AFR table and everything is happy. (IMG:style_emoticons/default/wink.gif) |
Mblizzard |
Aug 30 2017, 12:38 PM
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#3
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
Somewhere in the menus you can pull up the 'Realtime Display' which shows all of the readings from the sensors. Actually, realtime display pulls up graphs, and then there's a button to see all the actual numeric values. Post a picture of that, with the key on, but not running. I've recently realized how vital understanding the 'non-running' readings of sensors is. For example, your MAP sensor should be reading around 100kpa while not-running (at sea level). It's pretty easy, once you know, to look at the gauges before you start the car and see if that looks right. Also, when the engine is cold, the CHT and Intake Air Temp sensors should read about the same. If they don't, one of them is configured wrong. Also, have you used a timing light to confirm the timing displayed on the laptop matches what you see in real life? Oh, and finally, I think it's prudent to turn off all closed-loop interaction while tuning. If you're trying to tune the VE table, and the AFR table is fiddling with things 'behind your back' then you're going to have a tough time because you'll make a change in the VE table, and then the AFR controls will put it back where it was (essentially). Tune the VE table open loop, then once it's running well turn on closed loop. This will make it run worse, until you tweak the AFR table so it runs back where it was. At the end of that process you have a tuned VE table and a tuned AFR table and everything is happy. (IMG:style_emoticons/default/wink.gif) I think I got caught by the closed loop problem on my first attempt. Will see if I can find that display. |
Mark Henry |
Sep 1 2017, 06:49 AM
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#4
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
I think I got caught by the closed loop problem on my first attempt. Will see if I can find that display. Ahhhh! You have to tune in Open Loop! Always! Closed loop is something you could try after tuning in open loop. Closed loop may always run too lean for our cars that like things a little rich side. On the injectors 270cc is fine if they do that at 30-35 PSI. I totally hate increasing pressure to increase flow, to me it's a terrible way to compensate for incorrect injector sizing. I run at 35 psi. |
JamesM |
Sep 1 2017, 10:41 AM
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#5
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Senior Member Group: Members Posts: 1,895 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
I think I got caught by the closed loop problem on my first attempt. Will see if I can find that display. Ahhhh! You have to tune in Open Loop! Always! Closed loop is something you could try after tuning in open loop. Closed loop may always run too lean for our cars that like things a little rich side. On the injectors 270cc is fine if they do that at 30-35 PSI. I totally hate increasing pressure to increase flow, to me it's a terrible way to compensate for incorrect injector sizing. I run at 35 psi. Not always, it depends on how you are tuning. If you are tweaking things manually than closed loop will probably make things difficult you. If you are tuning your VE table via log analysis though having closed loop on while you are collecting your data will actually give the analyzer more data points to work with and speed up the process. Doing things manually is a royal PITA given the number of data points we are working with. The autotune feature available in the paid version of Tunerstudio is worth WAY more than what they charge for it as is the log analyzer in MegaLogViewer. You will turn weeks of tuning into hours and get things a hell of a lot more accurate in the end. again SCIENCE!! If you are only going to pay for one get the registered version of Tunerstudio for the autotune feature. I like having both because i nerd out on data. |
Mblizzard |
Sep 1 2017, 10:47 AM
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#6
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
I think I got caught by the closed loop problem on my first attempt. Will see if I can find that display. Ahhhh! You have to tune in Open Loop! Always! Closed loop is something you could try after tuning in open loop. Closed loop may always run too lean for our cars that like things a little rich side. On the injectors 270cc is fine if they do that at 30-35 PSI. I totally hate increasing pressure to increase flow, to me it's a terrible way to compensate for incorrect injector sizing. I run at 35 psi. Not always, it depends on how you are tuning. If you are tweaking things manually than closed loop will probably make things difficult you. If you are tuning your VE table via log analysis though having closed loop on while you are collecting your data will actually give the analyzer more data points to work with and speed up the process. Doing things manually is a royal PITA given the number of data points we are working with. The autotune feature available in the paid version of Tunerstudio is worth WAY more than what they charge for it as is the log analyzer in MegaLogViewer. You will turn weeks of tuning into hours and get things a hell of a lot more accurate in the end. again SCIENCE!! If you are only going to pay for one get the registered version of Tunerstudio for the autotune feature. I like having both because i nerd out on data. Yes I agree. I have both full versions. Like you said there is just too much data too manage for the new person. While you can grasp the interrelation of the varies data points and the impacts your changes are suppose to have. I just find it frustrating when because of your own lack of knowledge you don't get the expected change. the end it is your fault because you had a setting incorrect but I guess that is just part of it all! Hope I don't have weeks required to complete. Have to drive this to Okteenerfest! |
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