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Old 09-24-2009, 12:23 PM   #1
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Default MegaTune not opening on PC

I am new to the MS PNP and am planning to install a turbocharger on my car, initially however I would like to get the MS PNP running well with the stock engine setup so I can learn how to tune this way before the forced induction.
Last night I installed a 9093 PNP on my 90 miata using all the stock sensors and everything has gone well, the car already runs better than with the stock ECU, when I went to adjust ignition timing however I realized that there is a problem with megatune not working properly.
I loaded it initially with the MS serial cable unplugged a couple of weeks ago but never opened it, now when I click the mega tune icon with or without the serial cable connected to MS and ignition on the Window with the choice for installation type appears, I select the 9093 with MAF and press enter Only to have the Windows disappear and no other Window opens.
When I try to re-open mega tune again a warning Windows appears saying that mega tune is already running and it does not let me start mega tune again until I turn the computer off and re start it.
I un-installed mega tune from the pc and re-installed it with the latest version form DNI but the same problem continues.
I was not able to find anyone with this particular problem in the forum any suggestions?
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Old 09-25-2009, 01:05 AM   #2
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I assume you've tried restarting the PC since this happened? I've seen the same thing happen, where megatune will crash but the process will not die. You have to kill megatune.exe with the task manager or restart the pc to clear out the process.

Your problem is likely more complicated than that... but start there
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Old 09-25-2009, 09:24 PM   #3
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Thank You for the advise, Russ Patrick from DIY got me trough the initial problem, he had me un-install the old software and re-name the left over files, after downloading their newest version from MegaSquirtPNP by DIYAutoTune.com is now is communicating (on Tuner suite), I set base ignition on it but have not calibrated air and water temp sensors, I also played with the rev limiter a little (put it at 2K just to see if it works) , there is a new firmware available for my PNP 029Y but I have not installed it yet because I have an error message “Failed to subscribe to output channel config error! OC please see to valid output channel” that I need to figure out.
I will be getting a timing curve from a friend that had his car dyno tuned and is running the engine same setup that I currently have, I’ll leave the fuel map alone until I install a wide band.
The engine is really running well for an out of the box tune, it starts and settle to a nice idle when cold or hot and does not die when coming off the throttle like I have seen posted on this site and I think that it has a better throttle response from 2 to 5K RPM than the stock ECU, the only issue is that the idle is a little low when the AC is on.
I can see how this is addictive, having all that control is great but can get you in trouble if you do not have all the tools or get giddy specially with forced induction.
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Old 09-26-2009, 01:22 AM   #4
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Glad you got it working. Skip 029Y and download HR_10g. The engine will feel smoother and will idle better. If you're going to use the fuel tune that it comes with, be sure to take some logs and be certain that it's not running lean during full throttle, otherwise you could run into problems.

I just noticed your username. Are you Gus's brother, Harold? If you're referring to their spark tune, you won't be able to use it since they're using the AFM (no MAP sensor). I built Geoff's MS and created the baseline spark tune, which was based on the spark tune from the ITA msq on mspnp.com:

http://www.megasquirtpnp.com/models/...Map_102908.msq

Shane said it was pretty good right off the bat, so you might want to try it. If you do some logging you should be able to duplicate their timing advance curve.
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Old 09-26-2009, 09:04 AM   #5
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Hello Justin, I will try the HR_10g. and I am Harold, Gus brother and I was planning to put Jeff’s timing curve, I know that he runs the AFM, I may be wrong but I was planning to make a knock lessening devise like Shane has and try their timing map, my thought was that as long as the mixture is not too lean (using the base map) their timing map may be pretty close? But I will start with the ITA map if that is your recommendation.
I am going to have Shane dyno tune it when I install the forced induction in order to get full potential from that setup.
By the way Jeff’s car was fantastic power-wise at nationals, it really had a ton of torque you did a great job with their ECU, we just did not have the grip and personally the talent to make it happen.
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Old 09-28-2009, 05:52 PM   #6
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Glad the ECU worked out! Sorry to hear of all the car troubles. Bad timing!

Your car would barely run with Geoff's spark map. His ECU runs in a completely different mode. The y-axis on his fuel/spark tables is AFM volts (0-5 volts). Since you're using a MAP sensor, the y-axis is vacuum, from about 0-100kpa. You could modify your ECU to run in AFM mode, but you're better off just sticking with what you have.
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