gtune - custom firmware

gurov · 2008-10-21 12:31:19

something i'm going to start doing as requests for this stuff come in and as i figure out

this is one feature darsondriss asked for, his overrun fuel cut was not "sticking" enough, so i added hysterisis to overrun fuel cut.

you set the KPa at which overrun kicks in, and set the gap that must be covered for overrun to get turned off.

i.e. overrun kicks on at 25 kpa, the gap is set to 5 KPa, so the engine MAP can increase up to 30 before overrun correction gets turned off as opposed to getting turned off once MAP rises past the original engagement point (25)

i'll be adding more and more of these little hacks as people discover little quirks with the specvs and the weird shit drive by wire does.

download: http://myspecv.com/gtune.rar

you will need to reconfigure the project if you have a 4 bar map sensor, contact me for how to do this.

that's the distribution that i test all the boxes with... and it has the compiled firmware in the proper spot already, along with all the files needed for megatune to run right

gurov · 2008-10-21 14:31:54

pimpsmurf wrote:
Did you just hack the firmware to add a 5kpa hysteris, or did you mod the megatune source to include setting it?

confused as to if that is the dead zone listed at the bottom, and don't have my box with me. I run tunerstudio, but for an awsome feature such as this, it would be worth booting up megatune to set params.

-JNY

i added the deadzone box at the bottom, and it makes changes inside the firmware, this can be used with normal HR distribution of megatune, it just won't change the deadzone.

gurov · 2008-10-21 16:17:26

pimpsmurf wrote:
gurov wrote:
pimpsmurf wrote:
Did you just hack the firmware to add a 5kpa hysteris, or did you mod the megatune source to include setting it?

confused as to if that is the dead zone listed at the bottom, and don't have my box with me. I run tunerstudio, but for an awsome feature such as this, it would be worth booting up megatune to set params.

-JNY
i added the deadzone box at the bottom, and it makes changes inside the firmware, this can be used with normal HR distribution of megatune, it just won't change the deadzone.
sweet, so the firmware comes with a default and with the modded megatune you can tune it in the interface?

correct

gurov · 2008-10-21 16:37:34

pimpsmurf wrote:
fantastic developments! I'll see if I can make any good suggestions on improvements for our funny little engine.

When do you think you will release the binary/source?

-JNY

whenever someone wants it,
it's just a .s19 file and a new msns-extra.ini that you put in the project directory

gurov · 2008-10-24 03:33:28

http://myspecv.com/gtune.rar

that's the distribution that i test all the boxes with... and it has the compiled firmware in the proper spot already, along with all the files needed for megatune to run right

gurov · 2008-10-24 03:37:42

the deadzone function is pending testing in real life to see if it makes things a bit easier

darsondriss · 2008-10-30 17:44:51

all i can say about this is FUCKING AMAZING AWESOME. everyone with ms needs to get this shit. the offset makes overrun stick good, yet the TPS makes it come out right when needed. Also idk about other people but i was having an issue where the overrun would engauge at light crusing speed becuz of the high vacuum/low throttle. This allows you to set the TPS threshold a few points lower and avoid that problem as well. Now you basically have next to no pressure on the throttle to get the overrun engauged.

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2008-10-21 12:31:19 (11 weeks 1 day 12 hours 47 minutes 24 seconds) #1899695 | | view posts since this #1

gtune - custom firmware

2008-10-21 14:31:54 (11 weeks 1 day 10 hours 46 minutes 49 seconds) #1899786 | | view posts since this #2

Re: gtune - custom firmware

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2008-10-21 16:17:26 (11 weeks 1 day 9 hours 1 minute 17 seconds) #1899860 | | view posts since this #3

Re: gtune - custom firmware

pimpsmurf wrote:

gurov wrote:

pimpsmurf wrote:

2008-10-21 16:37:34 (11 weeks 1 day 8 hours 41 minutes 9 seconds) #1899879 | | view posts since this #4

Re: gtune - custom firmware

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2008-10-24 03:33:28 (10 weeks 5 days 21 hours 45 minutes 15 seconds) #1902809 | | view posts since this #5

Re: gtune - custom firmware

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Re: gtune - custom firmware

2008-10-30 17:44:51 (9 weeks 6 days 7 hours 33 minutes 52 seconds) #1909531 | | view posts since this #7

Re: gtune - custom firmware