modifiying standard injection

[Adrian R]

hello there... I'm new to the list, but it seems excellent

I have a question and it may seem strange, but My finances are not what I 
would like and I have everything I need to turbocharge My 1994 Toyota 
Corolla Sprinter EXCEPT a computer. Aftermarket computers are becoming 
prohibitivly expensive (which is strange seeing as MOST aftermarket systems 
are developed here)

I understand basic electronics and computers... I probably understand more 
advanced ones too as long as I take the time to read it properly.

I was wondering how far the inputs on a factory computer can be modified and 
by what means. I have seen simple variable pots do amazing things to factory 
computers but I am not sure of the processes or how well factory computers 
learn. I read an artical of a similar fit to what I want to do (on a 
different car). The writer wrote about "re-learning" the computer by 
disconnecting the O2 sensor and driving around (removing the computer's 
ability to close loop) manually adjusting fuel mixtures to keep them 
relativly correct using a simple circuit of pots to adjsut map sensor 
inputs. The artical continues to say that after only a few days of normal 
and hard driving, he was able to re-coonect the O2 sensor and the computer 
continued to run the car as if it was its normal prgramming.

I have even considered building My own micro-fueller, running 1 or 2 
injectors idependantly. I have a few ideas on how to do this but am still 
investigating

any ideas, comments or suggestions would be greatly appreciated. Please 
contact Me directly at ajrgsr at hotmail.com as I can not garruntee getting to 
the lists

thankyou

Adrian



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