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#241
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Re: Gearshift Maps Thread Hijack
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Those posting more or less on a commercial front, surely should separate their promotions accordingly.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#242
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Re: Gearshift Maps
I have no qualms about removing or moving my posts.
I've been posting here because I like to support Phil's transmission control unit work and it's my hope that the Ecutuner software/interface package will result in exponentially increasing his library of TCU and ECU firmware. My appologies |
#243
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Re: Gearshift Maps
Good stuff Mike, thanks for sharing.
Any chance I can get a copy of your software to play with when it's ready? Phil.
__________________
Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II |
#244
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Re: Gearshift Maps
Yep, the software will be a public download but the coms will require the use of a ttl232r cable which has been purchased from/programmed by me. I'll send you a cable.
I'm working on data and table editing features now. The features and tabs involved in communicating with the control unit, everything from set up to monitoring parameters, monitoring bitmaps, clearing memory, and downloading firmware is complete (including debugging and optimizing). I just stopped posting progress after being scolded for jacking your thread. |
#245
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Re: Gearshift Maps
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I can understand how this may have happened. The commumication hardware does seem, at first, to have direct application. However, everything not related to downloading the TCU ROM doesn't. Starting here put you on a slippery slope. Failing to correct the situation after you were alearted to it might be a scoldable offense, but I have no interest in doing so. What you do about this reflects more on your character than your work. |
#246
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Re: Gearshift Maps
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At long last, another who in spite of possible negative reaction, has the courage to make a statement, due and necessary in the interest of members.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#247
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Re: Gearshift Maps
A member here recently sent me an email asking this question
Quote:
The subroutine that determines the Sol A Duty cycle is at address EBAA in the USDM TCU (rom id:705404). First it chooses a map from a list of thirty seven 16bit map addresses at location C870. Code:
0000C870 C9 0E C9 26 C9 3E C9 56 C9 0E C9 0E C9 6E C9 86 0000C880 C9 B6 C9 CE C9 0E C9 9E C9 E6 C9 FE CA 16 C9 0E 0000C890 CA 2E CA 46 CA 5E CA 76 CA 8E CA A6 CA BE CA D6 0000C8A0 CA EE CA A6 CA A6 CB 06 CB 1E CB 4E CB 66 CA A6 0000C8B0 CB 36 CB 7E CB 96 CB AE CA A6 The next address CA2E (at C890) is used for Reverse gear. The next four addresses (CA46,CA5E,CA76,CA8E), I'm not quite sure about. Maybe they are used under some kind of error condition. The 1st one related to 1st gear, the 2nd for 2nd gear etc. The important part is the final block of 16 addresses from C89A to C8B9. These are split as follows Code:
Want_1 Want_2 Want_3 Want_4 Gear_1 CAA6 CABE CAD6 CAEE Gear_2 CAA6 CAA6 CB06 CB1E Gear_3 CB4E CB66 CAA6 CB36 Gear_4 CB7E CB96 CBAE CAA6 Now I'll explain how to decode the maps, taking the one at CAA6 as an example: Code:
0000CAA0 xx xx xx xx xx xx 0F 7D 23 28 1F FA 1B 58 2F 96 0000CAB0 27 D8 5F 00 43 F8 FF 00 43 F8 xx xx xx xx xx xx Code:
TPS M C 0F 7D 2328 1F FA 1B58 2F 96 27D8 5F 00 43F8 FF 00 43F8 Code:
TPS M C 15 125 9000 31 250 7000 47 150 10200 95 0 17400 255 0 17400 Now we use the straight line formula y=mx+c. For example, if we have 10% throttle, that's a TPS value of 25, so we select the 2nd line of the table, M=250 and C=7000. Now we do y = (250*25)+7000 = 13250. The duty cycles in the TCU are represented by numbers from 0 to 20000. So 13250 is about 66% duty. I've plotted some graphs to show the different maps. That's how the base Sol A duty cycle is calculated. Using the information above, you should be able to recalibrate the line pressure. But there is a little bit more to it. After calculating the base duty cycle, it applies a compensation based on the atmospheric pressure signal. It compares the barometric pressure to a list of 8 thresholds at address CBC6 and chooses the corresponding map address from a list of C8BA. Code:
0000C8B0 xx xx xx xx xx xx xx xx xx xx CB CE CB E6 CB FE 0000C8C0 CC 16 CC 2E CC 46 CC 5E CC 76 xx xx xx xx xx xx Code:
TPS X Y Z 20 00 08 80 40 20 0C 82 60 40 0C 85 80 60 10 88 A0 80 08 8C FF A0 00 8E If the vehicle is not fitted with a barometic pressure sensor, or the sensor is faulty then the compensation is calculated differently based on current gear and vehicle speed. I haven't fully analysed it because it should not happen in the normal case. I hope that information is helpful. I should also add that the first block of 16 maps at C870, the ones that are used if the torque control signal fails, are decoded in exactly the same way as the normal case ones at C89A. I have not looked at the non-USDM code. The VTD boxes may work differently.
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II Last edited by b3lha; 12-08-2009 at 05:18 PM. |
#248
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Re: Gearshift Maps
That's awesome Phil,
Adjusting the bottoms of the 3rd want 3 and 4th want 4 maps aught to extend the lives of a lot of transmissions that don't have performance valve bodies. |
#249
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Re: Gearshift Maps
Phil,
One of your cars is JDM right? Is the TCU case on the JDM the same as the US model? Someone has sent me a TCU that he got with a JDM transmission which was supposed to be a JDM SVX TCU but the case is different and I'm suspecting it's something else. The case sticker is KM. |
#250
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Re: Gearshift Maps
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Not the same, the JDM TCU case is mirror image to the US case, mounting under RHD-driver side. I might be able to contribute more, What is the trans number on the front diff?
__________________
Special Thanks to Our Friends and Sponsors: * http://www.alcyone.org.uk/ssm http://www.PhenixWheels.com http://www.dba.com.au/ http://www.ClassicSoftTrim.com http://ToyoTires.com/tire/pattern/versado-lx Gillman Subaru of Houston "QuickChange" http://www.TransGo.com/ http://www.PlanetSVX.com Bontrager Works, '92 Subaru SVX LS-L Claret ORIGINAL OWNER '92 LS-L Pearl~ '92 LS Pearl~ '92 LS-L Teal~ '92 LS-L Silver~ '95 LSi Polo~ '92 JDM Alcyone SVX Version-L 4WS Pearl~ http://www.subaru-svx.net/forum/showthread.php?t=54143 '92 JDM Alcyone SVX Version-L 4WS Ebony~ http://www.subaru-svx.net/forum/showthread.php?t=54117 |
#251
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Re: Gearshift Maps
Quote:
__________________
Special Thanks to Our Friends and Sponsors: * http://www.alcyone.org.uk/ssm http://www.PhenixWheels.com http://www.dba.com.au/ http://www.ClassicSoftTrim.com http://ToyoTires.com/tire/pattern/versado-lx Gillman Subaru of Houston "QuickChange" http://www.TransGo.com/ http://www.PlanetSVX.com Bontrager Works, '92 Subaru SVX LS-L Claret ORIGINAL OWNER '92 LS-L Pearl~ '92 LS Pearl~ '92 LS-L Teal~ '92 LS-L Silver~ '95 LSi Polo~ '92 JDM Alcyone SVX Version-L 4WS Pearl~ http://www.subaru-svx.net/forum/showthread.php?t=54143 '92 JDM Alcyone SVX Version-L 4WS Ebony~ http://www.subaru-svx.net/forum/showthread.php?t=54117 |
#252
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Re: Gearshift Maps
I don't have the transmission. I'm just supposed to socket the TCU and put my shift maps on it. The mount on this case isn't a mirror image of the US case. It's about a 3/4" high by 3" long tab with two screw holes.
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#253
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Re: Gearshift Maps
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I wonder if the owner was told that the TCU was a match to the trans? All JDM/UK TCU cases that I have seen are exact mirror image to US
__________________
Special Thanks to Our Friends and Sponsors: * http://www.alcyone.org.uk/ssm http://www.PhenixWheels.com http://www.dba.com.au/ http://www.ClassicSoftTrim.com http://ToyoTires.com/tire/pattern/versado-lx Gillman Subaru of Houston "QuickChange" http://www.TransGo.com/ http://www.PlanetSVX.com Bontrager Works, '92 Subaru SVX LS-L Claret ORIGINAL OWNER '92 LS-L Pearl~ '92 LS Pearl~ '92 LS-L Teal~ '92 LS-L Silver~ '95 LSi Polo~ '92 JDM Alcyone SVX Version-L 4WS Pearl~ http://www.subaru-svx.net/forum/showthread.php?t=54143 '92 JDM Alcyone SVX Version-L 4WS Ebony~ http://www.subaru-svx.net/forum/showthread.php?t=54117 |
#254
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Re: Gearshift Maps
Ya, I'll ask him. I suspect the transmission and tcu he was sold are in fact jdm but are jdm something else not svx. Who knows but hopefully we'll be able to figure it out.
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#255
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Re: Gearshift Maps
I'm familiar with several JDM trans and associated numbers. I'll be glad to help. If you get the number, I'll check the list twice
__________________
Special Thanks to Our Friends and Sponsors: * http://www.alcyone.org.uk/ssm http://www.PhenixWheels.com http://www.dba.com.au/ http://www.ClassicSoftTrim.com http://ToyoTires.com/tire/pattern/versado-lx Gillman Subaru of Houston "QuickChange" http://www.TransGo.com/ http://www.PlanetSVX.com Bontrager Works, '92 Subaru SVX LS-L Claret ORIGINAL OWNER '92 LS-L Pearl~ '92 LS Pearl~ '92 LS-L Teal~ '92 LS-L Silver~ '95 LSi Polo~ '92 JDM Alcyone SVX Version-L 4WS Pearl~ http://www.subaru-svx.net/forum/showthread.php?t=54143 '92 JDM Alcyone SVX Version-L 4WS Ebony~ http://www.subaru-svx.net/forum/showthread.php?t=54117 |
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