| Author |
Message |
Richard Johnson
Tinkerer
Florida, USA
SC300 1JZ-GTE Swap
Posts: 85
Reg: 06-2006
|
It sparked some intrest here, so ill talk about it. I plan on my car very soon going to a stand alone engine ECU. The big question that comes up with automatic tranny owners is... how to control the transmission???
I've wired in and have been using a Latent Solutions SupraStick V4 for most of the year now. It's a stand alone automatic tranmission ECU fully programable.
It includes 2 base maps that are very good for the A340e (what its designed for anyways), and are fully modifiable. You can control all paramaters of the transmission, including torque converter lockup, delay, shift RPM, etc..
Also allows you to switch to a manual e-shift mode like the Altezza/IS300.
It's very easy to wire in, and the tech support they offer is outstanding. I have a JZZ30 install diagram for whoever wants it since the website is based towards the mkiii 1jzgte.
My current setup goes as:
ECT switch controls shift map 1/2
OD button controls auto/manual mode
Cruise control paddle controls up/down shift for manual mode
Shift LED light on a-pillar gauge pod.
The system runs by 12 volt leads (12v on, 0v off) for most of the options, so you can make the system work how ever you want. The paddle shift goes by voltages. For example, 4v upshift, 10v downshift. So a standard "paddle" shifter can be used (resistor type). The OEM cruise control works this way, and keeps the install very stealth.
I have a 16x2 Blue/White LCD serial display next to my SAFC2 where my radio used to be to display the ECU's outputs...
MPH
RPM
TPS volts
Auto/Man mode
what gear your in.
It plugs into ANY laptop to program it, and you just use any hyperterminal to connect to the ECU to program it. Its a very easy interface.
So what does this all mean?
It means you can run a PowerFC or any other stand alone ECU in your automatic soarer that doesnt control the transmission on its own.
Its $350usd
http://latentsolutions.com/suprastickuv.html |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 71
Reg: 10-2006
|
Hi Richard i read their install manual, does the 3000, 3500 and 4000 stall speed settings actually work with the factory torque convertor? I think i'll be ordering one very soon thanks for your info. |
Richard Johnson
Tinkerer
Florida, USA
SC300 1JZ-GTE Swap
Posts: 92
Reg: 06-2006
|
unfortunatly you cant change the stall on the torque converter... but how the transmission shift greatly depends that you have it set correctly in the ECU. You can TWEAK the shifting by changing those numbers (and alot others) |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 72
Reg: 10-2006
|
So the settings they show on the upshift downshift chart means what? And do you have to upgrade the factory converter to be able to engage the upshift stall speed settings?
I already shift kitted the trans, planning to do a stall converter possibly 3500 to 5000 rpm depending on when in rev range best power is made. My car is still being worked on doing a 2jzgte swap, waiting for tune results(see my profile for some details). cheers |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 73
Reg: 10-2006
|
Sorry i was reading the 1JZGTE installation manual not the SS-V4 they are different. |
Richard Johnson
Tinkerer
Florida, USA
SC300 1JZ-GTE Swap
Posts: 96
Reg: 06-2006
|
I 99% of the time use the SSV4 in auto mode. I love the shift maps i've made.
The only thing REALLY good i've found the manual mode for is dyno tuning. Its really nice to be able to put the car in 3rd gear at low RPM's and keep the TC locked for consistant results. |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 74
Reg: 10-2006
|
Do you run the factory torque converter or a stall converter? Do you know if the SSV4 can control the lock up of a custom 4500rpm stall conv either before or after 4500rpm, or at all?
(Option 2)Is it an idea to change the auto trans and converter to the supra one that was behind the 2JZGTE motor that's in my car now, and use the SS-1JZGTE? To get more control of stall speeds and lock up as well as setting shift patterns. Do you know if the supra trans is stronger with out rebuilding it?
I'm trying to achieve good drag strip results but maintain some drivability on the street, while comparing the cost and effectiveness of a custom stall converter in my shift kitted trans with the SS-V4 or option 2 with factory converter with the SS-1JZGTE. |
Richard Johnson
Tinkerer
Florida, USA
SC300 1JZ-GTE Swap
Posts: 100
Reg: 06-2006
|
Transmission fluid and fin design is the factor that changes the stall on your torque converter. The stall setting in the SSV4 lets the ECU know what the slip point is, to optimize shifting and its firmness.
Its very good to use a harsh shift kit with the SSV4, it makes for instant pushbutton shifts. On a stock transmission, its still slow.
Both transmissions are the same. They hold around 500whp (us hp) in their stock trim. The option that everyone goes here is.. we change to GM TH400 or TH700r4 or 4L60E transmissions.
The adapter kit is $700usd, and you can use the stock toyota flexplate with a GM torque converter, and unmodified GM bellhousing.
For the price of the conversion kit, shifter, linkage, and built transmission.. its alot cheaper then a A340E built up that cant take but half the HP.
With the SSV4, you can also set it so the TC stays locked during shifts! be careful with that tho!
I will soon be selling my SSV4 as i am going to a GM transmission due to costs, i wish i could keep it! |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 75
Reg: 10-2006
|
Richard Johnson wrote on Sunday, November 26, 2006 - 09:03 am:The SSV4 controls the lockup of any standard torque converter (no matter the stall). When I'm on the dyno, i put the car in 3rd gear with the TC locked up at idle.. it makes for alot of fun
Does this mean if i get a custom 4500+rpm stall converter for my trans lock up cannot be controlled? |
Richard Johnson
TryHard
Florida, USA
SC300 1JZ-GTE Swap
Posts: 101
Reg: 06-2006
|
As long as the torque converter is a standard toyota unit modified for higher stall, it will work perfect.
In otherwords, if you were to put that torque converter in a standard soarer with stock ecu, and it still locked up, the SSV4 will also lock it whenever you specify |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 76
Reg: 10-2006
|
I don't think you can get a lot of stall from the factory converter not enough any way? |
Richard Johnson
TryHard
Florida, USA
SC300 1JZ-GTE Swap
Posts: 102
Reg: 06-2006
|
To change the stall of the 1jzgte converter, they change the fin design in the torque converter itself.
Thats how all converters are made.
http://auto.howstuffworks.com/torque-converter.htm
For a street driven car, rule of thumb is, you never want to go higher then 3500rpm stall. |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 77
Reg: 10-2006
|
Yes good rule but having the ability to control the stall below say 4500 rpm would be nice. Could 3500 rpm stall be achieved from the factory unit? Thanks for all your info  |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 78
Reg: 10-2006
|
What converter do you run? |
Mark Paddick
Goo Roo
ACT
UZZ31 V8 Soarer , JZZ30 TT Soarer
Posts: 2955
Reg: 07-2005
|
With a 2J swap you shouildn't need too big a stall.
3000 is the first big step from standard and should be enough.
I have a 2700 in the V8 which is heaps and about 2800 in the TT. Both cars drive the same. 2800 is enough for steel wheel standard turbos and even when slowing boost with the controller so it doesn't happen at all 'til around 3500rpm that converter is enough.
For drag purposes, I reckon you'll have other things to sort out (rear end, traction) before ever needing to go higher.
MV Autos do a Kevlar replacement for the lock-up clutch which seems to work well. Much better than the standard clutch. It can hold while gear-changing but I wouldn't push it too hard. |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 79
Reg: 10-2006
|
I'll give MV's a call today to get some info, cheers |
Chris Davey
Goo Roo
QLD
Corona
Posts: 1088
Reg: 07-2005
|
Joe: you need to do some reading on that how stuff works link re torque converters.
I am not sure about 2jz converters but modded 1jz converters can be taken to 3400rpm with a different housing. 2800 is the limit for stock housings Mike said.
It is important to note that these are advertised stall speeds and may not be the same on your engine e.g. if you had a 3000rpm converter on a 1jz with stock turbos and it reached the 3000rpm stall and then fitted that same converter to a 1.5L 4 cylinder n/a it doesn't have the same torque (to multiply) and therefore it won't stall at the same rpm. It will be lower.
That is why it is very difficult to pick the right converter.
AFAIk this SSv4 needs the stall speed to determine shift speed.
If you go to a very high stall (smaller diameter) converter it is likely that they cannot fit a lockup clutch in it. Therefore, it doesn't matter if the SSv4 can control it as it would not be there to control.
The converter should be the last thing to do. You need to get the car running, dyno it and work out where it makes 5psi of boost and aim for a converter that stalls at that rpm.
Hope that helps. |
Aaron Mead
DieHard
NT
TT
Posts: 805
Reg: 03-2006
|
Ill take the SSv4 off your hands if you decide to sell it. |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 80
Reg: 10-2006
|
Chris thanks i spoke to mike from MV he said he can rebuild my 1jz converter and get up to 3800rpm stall behind 2jz with full lock up for around $650, he said best way to go and there are 10 second cars running same set up. Should be good |
Joe Radisic
Tinkerer
WA
2JZ GTE SingleTurbo
Posts: 81
Reg: 10-2006
|
I sent Richard PM this morning to buy his SSV4 when ready. |
Denys Hobbs
Tinkerer
Oxfordshire
Soarer TT Aristo TT
Posts: 15
Reg: 09-2005
|
Hi Richard, i also have the SupraStick V4 on my soarer TT great bit of kit, and would like to have the 16x2 LCD serial display but not sure how to get it set up any help would be most appreciated |
Mark Paddick
Goo Roo
ACT
UZZ31 V8 Soarer , JZZ30 TT Soarer
Posts: 3086
Reg: 07-2005
|
Mike's car is one of those 10 second cars too....and it's a bloody Rodeo. The guy has guts that's for sure, and knows his autos. |
Benjamin Burgess
DieHard
NSW
Toyota Soarer GT-TL
Posts: 818
Reg: 07-2005
|
I'm going to order one of these. Been told by Michael at MV that manually shifting the box actually gives you a higher MPH and lower ET cause of some way it changes how the box works. This one has one over mv's unit as this one can do auto mode, mv's is manual only so requires you to change out the tranny ecu to get auto again. He said that it was still in development. |
Richard Johnson
TryHard
Florida, USA
SC300 1JZ-GTE Swap
Posts: 113
Reg: 06-2006
|
the soarer doesn't have a seperate transmission ECI, its part of the main ecu.
You have to get a 16x2 serial display that supports 19200 baud. Theres plenty on the internets that have a 9 pin serial port on the back. They go for around $50usd in 12v form in any color. (most displays are 5v). |
Benjamin Burgess
DieHard
NSW
Toyota Soarer GT-TL
Posts: 819
Reg: 07-2005
|
I have a CarPC  |
Neil Griffiths
Trader
NSW
212Kw @ 8psi MANUAL Super Charged UZZ31
Posts: 3134
Reg: 07-2005
|
MV's Rodeo IDLES at 5psi Boost...hahahahah
So it can run upto 30 psi on throttle
It's either an 8/71 or 12/71 ! |
Mark Paddick
Goo Roo
ACT
UZZ31 V8 Soarer , JZZ30 TT Soarer
Posts: 3139
Reg: 07-2005
|
Bloody BIG balls! |
Andy Bathie
Tinkerer
None
Soarer TT Single conversion
Posts: 21
Reg: 11-2005
|
Hi Richard, I have just bought a suprastick and could really do with the wiring diagram, and any other info that would help.
Do you have the shift tables you mentioned as well? |
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