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well...
sorry to be a pedant
what I have found out recently is ...
if the car is trionic there are two eprom chips holding the map..
these can be replaced with others holding different maps
so you are both right
practically they remove the chips and re-map them so they still hold all the "other stuff" which these chips hold... for tcs/alarm etc
I believe on the 93 trionic board the chips are hard wired..later ones they use a holder ..
 

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Originally posted by Mark E:
[qb]  QUOTE
Originally posted by ylee coyote:
[qb] I believe on  the 93 trionic board the chips are hard wired..later ones they use a holder .. [/qb][/b]
Correct. [/qb][/b][/quote]Not necessarily. Yes, the '93 EPROMs are soldered in, but so are all the later ones I've seen too. The difference is that the '94-on chips are reprogrammable in-situ, which is how Maptun do it. Other tuners might remove the chips, especially if they don't have the special equipment required to do the job in-situ. If they did this, it would be logical to fit sockets when they refit the chips, for easier removal in the future. This may be why people have seen socketed chips.
 
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