megasquirted spec v #3

darsondriss · 2008-08-30 00:34:51

theres another spec v running around on megasquirt. I got the 1st one gurov built for a purpose other than to add to his collection... Install took me like 2.5 hours to wire everything including taking out my neo and stuff. Then i spent probably 30 minutes getting it squared away and drove it around my complex a few times. SO heres the videos of the huge mess in my car lol. I had install pics but my couldnt find my usb cable so i deleted them to make room for the videos... need to find my sd card.

gurov · 2008-08-30 00:43:48

w00t. success. after working through darsondriss through a few problems with settings, things became a whole lot more accurate so tuning could be done properly. there was some confusion with what profile to use for the innovate analog output. all better now, clearly.

darsondriss · 2008-08-30 00:47:11

yup and make sure the inc files are on the ms firmware and megatune settings lol

darsondriss · 2008-08-30 00:51:57

look at the crazy afr resolution now... it just bounces up and down

gurov · 2008-08-30 00:52:16

darsondriss wrote:
yup and make sure the inc files are on the ms firmware and megatune settings lol

to expand on this.

there are 3 files that are needed for the firmware to work properly, they are for the temperature sensors to work properly and the gauges to show up right.

gurov · 2008-08-30 03:45:24

pimpsmurf wrote:
gauges flashing red makes me think DANGER TO MANIFOLD!

I'll bet you can't wait to get her tuned!

-JNY

you can actually get it to flash DANGER TO MANIFOLD with the tunerstudio MS java program

darsondriss · 2008-08-30 13:28:32

well drove it around for about an hour today... runs pretty good. Havent gotten into boost yet or hit redline but its driveable around town and usually wont stall. My idle values were running pretty lean so it bogged a good bit during decel but the megalogviewer seems to have corrected that with the new map i need to put on. It idles alot better though... there is none of this high idle bullshit or it not dropping lower than 1400 on decel.

gurov · 2008-08-30 13:30:05

darsondriss wrote:
well drove it around for about an hour today... runs pretty good. Havent gotten into boost yet or hit redline but its driveable around town and usually wont stall. My idle values were running pretty lean so it bogged a good bit during decel but the megalogviewer seems to have corrected that with the new map i need to put on. It idles alot better though... there is none of this high idle bullshit or it not dropping lower than 1400 on decel.

you can set up the very immediate left RPM to richen up a bit to help the engine recover when it goes that low in rpm.

darsondriss · 2008-08-30 13:33:13

yea i know... i have been meaning to set the table up to 500 800 1000 for the low values to give it that rich recovery at 500 and then a good idle between 800 and 1000. and cold cranking needs alot of work... it was a Pain to get it started today and then it would misfire alot until operating temp. I think that was partly the bad ve map and then i need to mess with warmup enrichment.

gurov · 2008-08-30 13:37:02

yup... i think even the evo owners with AEM standalones have mess with those... i guess logs can be analyzed... get it run well under normal temp, then start it up cold log it, and take the GEGO corrections and compare them to the warmup enrichments

darsondriss · 2008-08-31 01:34:36

well made it through day one and the car still runs... Only had minor rpm read errors as the ms harness doesnt seem to like fucking hurricane rain. made it to 5 psi though

darsondriss · 2008-09-01 01:09:34

we figured out the rpm problem... very simple hardware fix, so the car is running better than ever. I need to mess with the enrichments a tad, its got a bit of a bog if you get on the pedal fast. Next up is the boost control and launch control.

darsondriss · 2008-09-01 11:55:21

pimpsmurf wrote:
darsondriss wrote:
we figured out the rpm problem... very simple hardware fix
What's that?

gurov used a different resistor becuz someone told him somethin g idk youd have to talk to him on that, but i guess it worked with the external trigger but not with the ignition taps way. But if you use the resistor that comes with the MS its the right one.

boogerboy72 · 2008-09-01 12:05:35

now the question i ask everyone with ms,

cel?

darsondriss · 2008-09-01 14:35:23

i dont think so... i have had a cel forever and just finally got around to clearing it so it hasnt come back but we will find out in due time.

darsondriss · 2008-09-01 20:09:05

nope i dont have any cels

gurov · 2008-09-01 20:10:02

pimpsmurf wrote:
CEL? Like CELine dion? No check engine lights here, again, because the ECU has no way to tell that it's signal isn't getting to the damned fuel injectors.

You won't even get a CEL if we had spark control (with a trigger wheel) because the damned coil on plug design has a signal, which the stock ECU also can't read.

How many times are you going to ask Clay? haha

The one thing I'm interested in seeing is how the ECU will respond to the MAF maxing out with high boost all of the time. It's been said that the stock ECU will hold it's current timing level when it hits 5v until it drops back below 5v. It can't cut fuel because it doesn't have fuel control. Possibly this could trigger a CEL after a while, but with a relay on the ECM Backup Power 12 supply (switching off the ECU's power overnight, everynight, automatically) it would clear the codes anyway.

-JNY

we're planning to use a maf clamp for that, it's a simple circuit.

darsondriss · 2008-09-01 20:10:57

i still need to plug mine in andsee if ti works lol.

gurov · 2008-09-01 20:11:24

i say leave it off till you hit the problem

boogerboy72 · 2008-09-01 20:13:53

gurov wrote:
i say leave it off till you hit the problem

/agree

im so getting one of these.

gurov · 2008-09-01 20:14:42

boogerboy72 wrote:
gurov wrote:
i say leave it off till you hit the problem
/agree

im so getting one of these.

these = megasquirt
or maf clamp ?

boogerboy72 · 2008-09-01 20:15:27

mega squirt

gurov · 2008-09-01 20:17:00

boogerboy72 wrote:
mega squirt

you do know i have a deal right now for a built one, right ? $250 for what this guy got

darsondriss · 2008-09-02 22:06:05

launch control and flat shift works

gurov · 2008-09-03 11:06:08

eh, it still shuts the throttle body.. and you lose boost... i'll figure out a way to keep the tb open during shifts. there's going to be another switch for flatshifting to not close the tb.

darsondriss · 2008-09-03 15:55:49

it doesnt close the thorttle....

gurov · 2008-09-03 18:37:31

Then what's the massive blue downward spike on the very bottom graph around the same time as you shifting ?

darsondriss · 2008-09-04 01:17:05

gurov wrote:
Then what's the massive blue downward spike on the very bottom graph around the same time as you shifting ?

that was me... look at the second one that i circled. no down spike there. I was kinda indecisive on that first shift and went to let off and then was like hmmm why not...

speedjunkie · 2008-09-04 05:42:05

so uh is this flatshifting or what? There was a guy on the neon forums who used the flatshifting feature, after two months his transmission grenaded. i will see if i can find pictures

inspected · 2008-09-04 10:41:59

yeah my 4 puck would destroy the tranny

gurov · 2008-09-04 10:55:23

that's why you tune this right. need to know the rpm your shifts land on

speedjunkie · 2008-09-04 14:42:35

let me get something straight flatshift = no clutch right

inspected · 2008-09-04 15:03:17

no it means clutch but the car is still floored. but you still loose boost normally powershifting but this way it will keep the boost up

gurov · 2008-09-04 15:13:33

speedjunkie wrote:
let me get something straight flatshift = no clutch right

throttle body stays open, a 3rd rev limiter is engaged at a set point, usually exactly where you would land on an upshift from redline. so you go redline to exact rev-match spot for all the gears. might help with the weird ass shifting issues actually

SpecV118 · 2008-09-04 15:16:20

i have to say this looks more confusing then it really is.

Looks like fun. I need one now.

darsondriss · 2008-09-04 17:53:16

this actually feels really smooth with a stage 2 clutch. For the most part a 4/5 fuel cut rev limit will cut pretty much all of the power so i think it shouldnt be tooo bad on the tranny. It almost seems to function like a regular shift as it when it goes to flat shift, rpm immediately stops gaining and stays around there Also with the way me and gurov has the clutch switch set up it will stay in rev limit mode until the clutch is fully engaged

darsondriss · 2008-09-05 01:26:09

accel enrichment has thrown me through a few loops lol. At first i started out with TPSdot, then switched to mapdot. But with mapdot i developed this lean spike whenever i gave it any throttle as map values do not seem to change as fast as it seems to want it to. i.e. threshold is 40 or so kpa/s and me full throttle stomp to rev only got to maybe 150 or so kpa/s.

So today i switched it back over to TPSdot and am liking it alot. the lean spot seems to have gotten alot better as it seems a tpsdot threshold of about .75v/s and enrichment at .9v/s will cover most throttle movement. I started at a very little v/s threshold, like .25v/s and a short but heavy enrichment lasting like .2 seconds. But the low threshold caused it to be a very bouncy ride and then i noticed that when i hit the throttle, it would read 12.x, 12.x, 17, 17, 14.x as a result of the short enrichment. So i moved the threshold up to the .75 after a looking at the v/s bar and seeing that it usually hit around .9 at easy throttle. Then i changed the duration to .5sec and leaned it a bit and its run great the last few times.

My other issue right now is the rev limiter. It is reccomended that the base number of events to pull is x/10. Right now i have mine set to x/5. But the 2 times i have moved it up to x/10 the car has run like shit. So i cant tell if it is just a conqunsidence or not but i havent been able to mess with it to much as i am on a short leash with my neighbors right now lol. So idk what i am going to do about that, 4/5 will rev past the set limit, so i am thinking about going to 5/5 full cut for a redline rev limit and 4/5 for launch control.

Tomorrow i will hopefully get the boost control stuff hooked up... i just so hate removing the ecu to get power fucking 02

gurov · 2008-09-05 15:24:10

you should try out the megatune's autotune feature

just change some settings in custom.ini to give it more freedom:

here's what i'm going to use, they seem like sane settings

Code::

table = veTable1Map
      allowAutoTune          = on
      corrector              = egoCorrection
      ; Tuning block parameters
      ;    Global limits on tuning, outside the box and nothing happens.
      xLimits = 600, 8000 ; RPM
      yLimits =   20,   250 ; MAP
      zLimits =   10,  200 ; VE
      ; Vertex tolerance parameters
      ;   How close you must be to a vertex before tuning takes place.
      xRadius = 600 ; RPM
      yRadius =   14 ; MAP

      initialStartupInterval = 1.0 ; Seconds before first adjustment
      updateInterval         = 1.0 ; Seconds between each consecutive adjustment.
      proportionalGain       = 0.5 ; Proportion of (100-corrector) to use for adjustment.
      lumpiness              = 5   ; Maximum percent adjustment above or below neighboring VE points.

in the process of tuning, just hit alt-b from time to time to save the tuned map in flas.

darsondriss · 2008-09-05 18:01:43

yea i messed around with that for a little bit but you gotta remember to turn off accel enrichments. It would be nice for its lumpyness feature... i have smoothed out my map by hand a few times now as megalogviewer seems to like to give one crazy high value and some lower values around it.

Last edited by darsondriss (2008-09-05 18:02:11)

speedjunkie · 2008-09-05 19:45:21

gurov wrote:

you should try out the megatune's autotune feature

just change some settings in custom.ini to give it more freedom:

here's what i'm going to use, they seem like sane settings

Code::

table = veTable1Map
      allowAutoTune          = on
      corrector              = egoCorrection
      ; Tuning block parameters
      ;    Global limits on tuning, outside the box and nothing happens.
      xLimits = 600, 8000 ; RPM
      yLimits =   20,   250 ; MAP
      zLimits =   10,  200 ; VE
      ; Vertex tolerance parameters
      ;   How close you must be to a vertex before tuning takes place.
      xRadius = 600 ; RPM
      yRadius =   14 ; MAP

      initialStartupInterval = 1.0 ; Seconds before first adjustment
      updateInterval         = 1.0 ; Seconds between each consecutive adjustment.
      proportionalGain       = 0.5 ; Proportion of (100-corrector) to use for adjustment.
      lumpiness              = 5   ; Maximum percent adjustment above or below neighboring VE points.

in the process of tuning, just hit alt-b from time to time to save the tuned map in flas.

make sure you change the correct section in the .ini file, for example, if you are using the megasquirt and spark extra code make sure you adjust the autotune factors for the megasquirt and spark extra section

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2008-08-30 00:34:51 (18 weeks 4 days 22 hours 54 minutes 1 second) #1851659 | | view posts since this #1