Chris Wilson Posted November 14, 2008 Share Posted November 14, 2008 Thought I'd just browse the AEM ecu instructions on autobox control, I had no idea how complex this all was, note the warning that it's potentially harder to map than the engine There's PAGES more of the stuff on setting it up, no wonder people struggle. 7.14 Auto Transmission Auto Transmission The AEM EMS is capable of extensive automatic transmission control as long as the solenoids to be driven are compatible with the drivers in the AEM EMS. Note: It is important to determine the compatibility of the transmission solenoids with the AEM EMS, otherwise the EMS could be damaged. The automatic transmission control can be more complex than tuning an engine. User Definable Options for A/T A/T CClutch Period Units: mS Description: Frequency for converter clutch solenoid A/T CClutch Valve Units: User Selectable Output Description: Channel assigned to be converter clutch output control A/T CPress Period Units: mS Description: Frequency for converter clutch pressure solenoid A/T CPress Valve Units: User Selectable Output Description: Channel assigned to be converter clutch line pressure solenoid A/T LPress 1 Period Units: mS Description: Line pressure 1 frequency A/T LPress 1 Valve Units: User Selectable Output Description: Channel assigned to be line pressure 1 valve A/T LPress 2 Period Units: mS Description: Line pressure 2 frequency A/T LPress 2 Valve Units: User Selectable Output Description: Channel assigned to be line pressure 2 valve A/T LPress 3 Period Units: mS Description: Line pressure 3 frequency AEM EMS User Guide V2.0 193 2003 AEM A/T LPress 3 Valve Units: User Selectable Output Description: Channel assigned to be line pressure 3 valve A/T Shift 1 Period Units: mS Description: Shift solenoid 1 frequency A/T Shift 1 Valve Units: User Selectable Output Description: Channel assigned to be shift solenoid 1 A/T Shift 2 Period Units: mS Description: Shift solenoid 2 frequency A/T Shift 2 Valve Units: User Selectable Output Description: Channel assigned to be shift solenoid 2 A/T Shift 3 Period Units: mS Description: Shift solenoid 3 frequency A/T Shift 3 Valve Units: User Selectable Output Description: Channel assigned to be shift solenoid 3 A/T Gear 4 Input Units: User Selectable Switch Description: Input to use as overdrive gear 4 switch A/T Auto/Man Toggle Units: On/Off Description: Input to be used for selecting auto mode or manual mode. A/T Gear Control Units: On/Off Description: This activates the automatic shift scheme. A/T Gear Drive A Units: Multiplier Description: Used for testing purposes only A/T Gear Drive M Units: Multiplier Description: Used for testing purposes only Advanced Tuning 194 2003 AEM A/T Gear Hysterisis Units: On/Off Description: This adds an upshift/downshift delay for smoother driving conditions A/T Manual Input Units: User Selectable Switch Description: This selects what input will be used for manual gear selection. A/T Manual Output Units: User Selectable Output Description: This is an optional output to trigger a light to warn that manual gear selection is engaged A/T Gear Chg Mask Units: Multiplier Description: Used for testing purposes only. A/T WOT Gear Delay Units: mS Description: Programmable delay for wide open throttle shifting. A/T WOT Gear Max Units: Multiplier Description: Enter the maximum allowable forward gear for the specific automatic transmission used. A/T WOT Off Below Units: Throttle % Description: When under this throttle position all gear changes will be made from the A/T Gear Desired map. A/T WOT On Above Units: Throttle % Description: When above this throttle position all upshift gear changes will be made from the A/T WOT Shift Point table. Gear Hy Defeat Units: Throttle % Description: Sets the throttle position threshold for the A/T Gear Hysterisis option to be inactive. Switch Rtd Advance Units: Degrees Desciption: Advances the timing by this amount every 4.1 ms until the nominal timing is restored after the Switch Rtd function is turned OFF. The timing amount is returned to normal in steps, not all at once. A larger number here returns the timing to the normal faster. Typical value is 1 degree. AEM EMS User Guide V2.0 195 2003 AEM Switch Rtd Input Units: Switch Input Desciption: Switch input from which the Shift Rtd function triggers from. Switch Rtd Max Rtd Units: Degrees Desciption: Total amount if ignition retard desired while the Shift Rtd function is ON. Switch Rtd ReArm Units: mS Desciption: Time to wait after Shift Rtd is fully restored before allowing another Shift Rtd function to be recognized. Acts as a switch debounce. Typical value is 500 mS. Switch Rtd Step Units: Degrees Desciption: Retards the timing by this amount every 4.1 ms until the total retard amount specified in Switch Rtd Max Rtd is achieved. The timing amount is retarded in steps, not all at once. A larger number here retards the timing faster. Typical value is 1 degree. Switch Rtd Ign Cut Units: On/Off Desciption: Activates an ignition cut during the Shift Rtd. The ignition cut works with the ignition retard and only cuts the ignition after the full retard is achieved. After the Shift Rtd function is deactivated by the switch, the timing is then advanced back to normal according to Switch Rtd Advance and is rearmed after the time in Switch Rtd ReArm has elapsed. Switch Rtd Time Out Units: mS Desciption: Max switch ON time before it is assumed to be a failed switch input and kills the function. 2-D Tables for A/T A/T Gear Low/Hi Table Units: Volts vs Gear Volts Description: 100% makes the solenoid active in that gear position 0% makes it inactive Advanced Quote Link to comment Share on other sites More sharing options...
Wez Posted November 14, 2008 Share Posted November 14, 2008 Quote Link to comment Share on other sites More sharing options...
JamieP Posted November 14, 2008 Share Posted November 14, 2008 Ive never understood why the auto box control is made so hard, surely an ecu manufactuer could simply copy the controls from a stock ecu and upload it to their ecu? then just leaves the mapper to sort the engine tunning? sounds simple but im sure its not. Quote Link to comment Share on other sites More sharing options...
paul mac Posted November 14, 2008 Share Posted November 14, 2008 i know you dont approve of piggy backs Chris but that is precisely why i am using an e-manage ultimate and also listening to people like Ryan G Quote Link to comment Share on other sites More sharing options...
paul mac Posted November 14, 2008 Share Posted November 14, 2008 Ive never understood why the auto box control is made so hard, surely an ecu manufactuer could simply copy the controls from a stock ecu and upload it to their ecu? then just leaves the mapper to sort the engine tunning? sounds simple but im sure its not. its a fair point Jamie, but I'm sure car manufacturers would literally spend months making sure the auto map is capable of dealling with any situation you could throw at it, to just "suck" out all this info from a stock ecu would be impossible as the two would be completely incompatible unless they worked on the same operating system, there would also be copywrite (or whatever it is for software) issues as the big car manufacturers aren't going to give away all their R & D for nothing, Mr T would be able to afford some pretty expensive lawyers to sue your ass off Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted November 15, 2008 Share Posted November 15, 2008 i know you dont approve of piggy backs Chris but that is precisely why i am using an e-manage ultimate and also listening to people like Ryan G My thoughts exactly and the main reason I would never go standalone on an auto car more hassle then its worth imo Quote Link to comment Share on other sites More sharing options...
dude Posted November 16, 2008 Share Posted November 16, 2008 All i can say is that i had no issues with mine other than the box was really too weak for the power my car was making, Dimitri had mine changing how i wanted and when i wanted in no time at all. Quote Link to comment Share on other sites More sharing options...
paul mac Posted November 16, 2008 Share Posted November 16, 2008 All i can say is that i had no issues with mine other than the box was really too weak for the power my car was making, Dimitri had mine changing how i wanted and when i wanted in no time at all. holly moly fella have i just seen a ghost, never mind the AEM, is that really you ? welcome back Quote Link to comment Share on other sites More sharing options...
dude Posted November 16, 2008 Share Posted November 16, 2008 holly moly fella have i just seen a ghost, never mind the AEM, is that really you ? welcome back It is in deed me!!! Remember what they say...." Old dudes never die....they just get faster:eyebrows: Quote Link to comment Share on other sites More sharing options...
paul mac Posted November 16, 2008 Share Posted November 16, 2008 It is in deed me!!! Remember what they say...." Old dudes never die....they just get faster:eyebrows: the forum will indeed be a richer place with your presence and i thank you for some advice you gave me on the phone back when i was going single , anywho back on topic was your auto box a built tranny as these seem to be more "responsive" to an AEM Quote Link to comment Share on other sites More sharing options...
dude Posted November 16, 2008 Share Posted November 16, 2008 the forum will indeed be a richer place with your presence and i thank you for some advice you gave me on the phone back when i was going single , anywho back on topic was your auto box a built tranny as these seem to be more "responsive" to an AEM Yes it was a boostlogic one with a 4000 rpm stall converter and a lock up switch:eyebrows: Quote Link to comment Share on other sites More sharing options...
tDR Posted November 16, 2008 Share Posted November 16, 2008 Yes it was a boostlogic one with a 4000 rpm stall converter and a lock up switch:eyebrows: I did a 2nd gear sprag on my 1st BL box at BPU level by the way. I heard you went through a few as well....? Did you shift manually with yours? I was given that as the reason mine broke. The replacement BL box seems to be holding up ok to the drag abuse. I run a PI 4k stall, 3x trans coolers and a lock up switch. Cheers, Brian. Quote Link to comment Share on other sites More sharing options...
dude Posted November 16, 2008 Share Posted November 16, 2008 I did a 2nd gear sprag on my 1st BL box at BPU level by the way. I heard you went through a few as well....? Did you shift manually with yours? I was given that as the reason mine broke. The replacement BL box seems to be holding up ok to the drag abuse. I run a PI 4k stall, 3x trans coolers and a lock up switch. Cheers, Brian. Same set up as mine which BTW was completly goosed and gave up the ghost when Matt H picked the car up from my workshop. IMO the ONLY way to run big power and auto is to go TH400. Quote Link to comment Share on other sites More sharing options...
tDR Posted November 17, 2008 Share Posted November 17, 2008 Same set up as mine which BTW was completly goosed and gave up the ghost when Matt H picked the car up from my workshop. IMO the ONLY way to run big power and auto is to go TH400. Yeah I'd agree the BL isn't particularly up to it. Problem with the TH400 is the fact it's 3-Speed so you lose some of the streetability - have you seen the new 4L80E conversion Sound Performance have come up with? I think I'd rather go that route if sticking with auto / drag when going single as that trans is supposed to be as tough as the TH400 but with a 4th gear: http://www.supraforums.com/forum/showthread.php?t=424344 A snip at 8k US Cheers, Brian. Quote Link to comment Share on other sites More sharing options...
dude Posted November 17, 2008 Share Posted November 17, 2008 Yeah I'd agree the BL isn't particularly up to it. Problem with the TH400 is the fact it's 3-Speed so you lose some of the streetability - have you seen the new 4L80E conversion Sound Performance have come up with? I think I'd rather go that route if sticking with auto / drag when going single as that trans is supposed to be as tough as the TH400 but with a 4th gear: http://www.supraforums.com/forum/showthread.php?t=424344 A snip at 8k US Cheers, Brian. I'd be surprised if they are as strong as a TH400 but don't know too much about them, I would have changed to a 6 speed had the verdict been different!!! Quote Link to comment Share on other sites More sharing options...
tDR Posted November 17, 2008 Share Posted November 17, 2008 I'd be surprised if they are as strong as a TH400 but don't know too much about them, I would have changed to a 6 speed had the verdict been different!!! That's pretty much the plan for me next year now I've got the records for stock TT's 6-Speed and single, go track spec and have fun circuit racing like I used to before getting sidetracked with this drag stuff! Quote Link to comment Share on other sites More sharing options...
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