I found the coolest thing!!
http://autospeed.com.au/A_2418/cms/article.htmlDigital Fuel Adjuster
> Modify air/fuel ratios
> Allow air-flow meter or injector swaps
> Change closed-loop running characteristics
> Overcome Boost cuts
Ref: Performance Electronics for Cars - Silicon Chip Magazine Publications.
This unit is a huge revolution in DIY automotive performance. It gives you the power to completely tune the air/fuel ratio throughout the entire load range, at 128 load points, providing incredible mapping resolution and brilliant drivability. It uses the Handheld Digital Controller - KC-5386, so there is no need for a laptop, and it supports both static and real-time mapping. It can be used on 0-5V and 0-12V signals, so it is compatible with all voltage output airflow meters and MAP sensors. It can also be set to work with 0-1V signals, allowing modification of EGO sensor signals. This unit has been extensively tested on a wide range of cars including Subaru Impreza WRX and STi, Nissan 200SX, BMW 735i, Lexus LS400, and Nissan Maxima. Kit supplied with a quality solder masked PCB with overlay, machined case with Processed panels, programmed micro and all electronic components.
Kit requires the Handheld Digital Controller - KC5386 and connecting cable WC-7502 (25 pin RS 232 extension cable with all pins connected).
"It is absolutely no exaggeration to say that the release of the Digital Fuel Adjuster is going to cause a revolution in the budget engine management modification." Julian Edgar, Silicon Chip Magazine.