My Supras now uses HHKS F-con Vpro v3.3!
82 Supra GTE
1994 One Lap Supra now uses HHKS F-con Vpro v3.3
The pictures of the laptop screen show the 7M-GTE ignition and fuel maps as well as one of the tracing screens of the 7m-GTE TCCS maps outlining comparisons of the ignition maps for the 7M-GTE stock and Lexus Stage 2 spec.
This new software has taken the original Lexus upgrade to a higher power level with a full re-mapping of the fuel and ignition to allow for no change in learned value system across the much higher load areas some of us run these engines. The three register areas of the ROM data that Techtom Japan-(G-Force) have already outlined in the code are still available. As well I will be adding curb idle adjustment, O2 feedback table re scaling and a few other areas are also in the mix with my software for the TechTom ROM boards for 7M-GT Lexus fuel upgrade.
I have now completed design and CNC manufacturing of the spacer plate that I originally intended for use on the 89-92 7M-GTE as well as some 87 & 88 7M-GTE ECUS. The first production batch was ready on Feb 12/2002. I have discovered that fitment of my spacer plate allows all of the 7M-GTE ECU's to have more needed room in the computer to allow the RCTS dual or single program ROM board to fit inside the ECU without requiring the modifications to re-locate a lot of parts inside the ECU. Also, the plate allows for more heat dissipation inside the ECU. For these reasons I will be using the spacer plates on all of the 7M-GTE ECU's. The plates also have a custom CNC engraved RCTS logo and carry the Toyota factory fit and finish. Techtom supplies a cast spacer for the dual board 2JZ-GTE TCCS but nothing has been available for the 7M-GTE TCCS until now!
Trick new RCTS CANADA CNC 7M-GTE and GE Spacer Plate
Spacer Plate in action on a 87 Supra Turbo ECU
See below for other areas I will be working on. Techtom Japan-(G-Force)
had already outlined register areas of the ROM data hex code for fuel-cut
and Rev Limit. RCTS has identified a number of previously unknown maps
and full registration areas in the 7M-GTE TCCS.
As of today the complete list of known Hex registration located is as follows:
*Rev Limit (fully adjustable from 700rpm to 9000rpm+/- I can work out
the hex value and tell you exactly, 50rpm per hex number, hex FF max, Dec
*Load-Cut (yes load cut, I can set it so my car will not make a hill in third gear at one setting and make it up the hill, two number values higher)
*Fuel-Cut (Yes, and it is fully adjustable from about 1 psi to no cut at all)
*closed throttle deceleration fuel cut
*Cold Idle Open Loop Table
*Ignition Map (full 3D map x-Rpm y-Load)
*Open Loop lookup Map
*O2 Sensor Closed Loop Lookup Table
*Idle Speed Lookup Table
Coming soon: Sound of the Supra GTE dual switching between Valet and
This new software takes the original 550 Injector and Lexus AFM upgrade to a higher level with addition of full re-mapping of the fuel and ignition to allow for Toyota stock idle and street performance coupled with a much higher load map and boost potential while still keeping the safety of the fuel-cut at a higher than ever point.
The Supra GTE has been running up to 1.3 bar of boost on the track and
open road for the past 4 months, With countless hard 1.3 bar pulls on road
tests, making fine adjustments to the Ignition, Load Fuel-cut, Boost Fuel-cut
and Fuel maps, the gains from the software have done amazing things to
the old Supra GTE's already fantastic 7M-GTE performance.
TCCS ECU's in the 1994 & 1995 JZA-80 require two ROM boards for complete control. One board is for ignition mapping and boost management for Twin Turbochargers and the another board for Fuel Mapping. The board for Fuel Mapping is where the Hex Data is saved for Rev-Limiter, Speed-Limiter and Trace registration these registration areas are located in the Fuel board software hex file.
Development is in progress in Japan for ROM Boards for the 1996 to 1998 OBD II Supra ECU's, more on this as we get word on availability!
These ROM boards with good software made a huge difference to the performance of the 2JZ-GTE when running larger single turbochargers. I have made a number of changes to the software in my One Lap Supra, mainly in turbo response and reduction of lag. The Ignition map for a Single turbo 2JZ-GTE is completely different than the stock maps for the twins. Because the stock ECU is expecting boost through the range that the single turbocharger is still in lag, the extra ignition timing in this area helps pull up bottom end turbo response. The Rev-Limiter can safely be raised to 7500 RPM with a big single setup and power will continue to rise to the limit point. We have run this for years of road racing with our One Lap Supra without any problems. This adds about seven hundred RPM to the power band of the 7M-GTE. Dual programs for the 2JZ-GTE allow the comparisons of the stock program to the custom one or like the notes above one of the two programs could be a valet mode with low Rev-Limiter and so on.
Software for 2JZ-GTE with stock Turbos does not offer huge improvements other than the Rev Limiter, Speed Limiter, and boost control using the stock TT VSV system to raise the boost while retaining factory waste gate control connections and hardware. However RCTS does not recommend more than 1.1 Bar of boost on the Stock Twin turbos for any length of time. Turbocharger damage will occur at these types of pressures with extended operation and daily cycling! More on this at the SONiC site.
As well we can change VPC chips based on backwards Engineering the software (not necessary to drive the car) by reading the file from the EPROM, then by editing the areas of the maps to move VPC O'clock dial maps and data around to meet specific VPC users requirements. The IDLE, GAIN and Option Out areas of all the independent VPC Dial O'clock Maps can be changes so the percentage change per click is more or less than the stock 2%. We can move any dial map's from 6 O'clock to 12 O'clock or whatever. As well we can make the range from 7 O'clock through to to 6 O'clock anything you want richer or leaner in any degree of % increase per click.
Another example would be to leave 12 O'clock where it is and make the
percent change per click more than 2 percent say 5%, 10 %, 15% to help
get a car that is not close to tune, in tune. Or less than 2% or maybe
1% changes could be used to dial in a car that is already in very close
tune. This is very useful for anyone that may be running a engine with
some non HKS program mods, off brand injectors, different fuel pumps, fuel
lines, Camshafts and other engine mechanical changes. Because the VPC is
a pressure sensor based speed density system, changes in particular engines
cause the fixed HKS program to be too far off the scale to get the engine
running in perfect tune again. With custom chips you can then dial the
particular car in again to meet your requirements.
-B Chip reading, editing and burning costs $250.00 USD for the first
chip and $95.00 USD for more sister chips if a series of chips is required.
Dual Program Switching Wire is Visible here. Just connect the two wires
and you have your hot program