I frequently repair Honda racecars, install stuff, do maintenance and tuning.
Although we are quite well off with all mechanical, air (intake, exhaust...), hydraulic (eg. VTEC) systems, we are often short of good tunable ECMs and tools.
I started to browse around [pgmfig] which is a nice site.Unfortunately I speak only a little English, I get some help from time to time with English and internet.
Current engine projects
- MembersPage/GeorgSzabo/BMW 4cyl BMW
- Honda Civic VTI 1992-1996 SR3 B16A2 engine OBDI MembersPage/GeorgSzabo/HondaVTI
- Honda Integra Type-R with B18 engine OBDI (OBDII?)
- Honda Civic Type-R with K20 engine OBDII
To my knowledge the above OBD# are correct.
There are some [datalogging] related info (the wiki part of pgmfi site is great).
From [this page] it seems it's a simple serial port with non-standard baud-rate and [some hack] needed.
I wonder if the Uberdata1.70.zip can tune or only monitor. It seems that only monitor, and EEPROM swap is needed for tuning.
Can someone provide info on logging and tuning the above ECM-s (maybe pgmfi.org links) ?
The RT tuning HW (eeprom-emulator for a specific honda ECM) found:
- [Ostrich] for $175 + $9 (cable) + shipping. We heard that someone had it working with chrome software
- Transtronics EPROM Emulator ~$176
eeprom emulators that might not integrate well with chrome sw:
- http://www.futurlec.com/EPROMEmulator.shtml
- http://www.sparetimegizmos.com/Hardware/EPROM_Emulator.htm
EEPROM programmer
Even after realtime tuning, the data must be programmed into the EEPROM.
- http://w3.enternet.hu/mklub/prices.htm#mikropo "EPROM égető IBM PC-hez" (28-pin EEPROM): 13000 + 2400 HUF = appr. 80 USD
- http://www.batronix.com/electronic/circuits/eeprommer-layouts.shtml with eagle files
- Eprom Programmer 3.4 for $80
- http://progshop.com/shop/programmer/index.shtml
- ...
Problems
- no knock (newer ECM-s with knock cannot be tuned the way honda-hackers tune old ones, see obd1 below)
- most software does not support realtime tuning
- actually eeprom emulator HW needed for realtime-tuning, see Ostrich above
- no closed-loop WOT capability
- logging format ?
uberdata is compatible only with a few ECUs and they are all obd1. for obd0 take a look at turbo edit... for obd2 you better put a conversion harness to go back to obd1 or buy $$ hondata.
i've been using uberdata for a couple of years now, its very stable, but support is horrible.
uberdata can be used to log, but that is not one of its main features in my opinion. It is mainly used to remap the fuel maps and ignition maps. There are a total of 4 maps for vtec motors and 2 maps for nonvtec motors. Uberdata allows you to turbo the car which is another one of its key features. I havnt upgraded my uberdata version in atleast a year. So there are probably many other features on the new version.
Some features are
1. Full throttle launch (build boost in netrual
2. Full throttle shift
3. boost cut
to install ubderdata is very simiple.
1. remove and socket the ECU (remeber only certain ecus are compatible, thay are all obd1)
2. open uberdata software
3. guess new fuel and ignition maps
4. write to eeprom
5. install in the car
6. tune the car and goto step 2 until you are statisfied
This is a very slow process, with many iterations and risks. It takes days or weeks instead of hours. Expect money spent on dyno time to be $500 instead of $100. For every modified engine. A tool (for $200..$300) that can be used for real-time tuning seems like a good investment.
Nick