I'm new to the forum and to be honest BMWs (as far as performance goes at least). Albeit I am far from new to cars- at this point my daily is a 00 Civic si, to be a b20vetec turbo next year after car is paid off (wanted good credit is why i got the loan). My old school car is a 1978 280z about to have a big block Cadillac 500 stuffed in it. 5600 rpm about 500hp BUT has about 700 foot pounds at 2800 rpm the car now weighs in at 2530 with the motor swap should weigh about 2800 or so pounds perhaps a bit less.
So I will have my 4cyl turbo and a natural aspirated v8 car. I am now looking at BMWs for a l6 car. I've done quite a bit of reading though there are only many things I can find through Google and this sites (as well as others) search function. The best car it looks to be to start out with is a 1995 m3 (or a 325is) for the obd1 system even though the later models have a larger motor its better to have the obd1 (at least IMHO from my readings).
So that being said the one thing I can't find is this. In the ecm/ecu in the m3 or 325is 95 and older obd1 systems do they have a eprom chip inside of them? I have the ability to tune just about anything as long as it has a eprom chip in the ecu/ecm. (FOR MYSELF BTW please do not ask me to tune your car)
If it does have a eprom chip I also would like to know how many pins it has as well.
Lastly if it does not have a eprom is it a eeprom chip or is it like the Nissan computers that don't have either? Or does it run consult etc.
Basically- the way I've tuned cars in the past is not through a standalone or piggyback but through real time chip emulators - and at this point I am looking to see if it is possible to tune these cars the same way.
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