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Message: <blockquote data-quote="Scorceror" data-source="post: 1091645" data-attributes="member: 3895">From what I can gather based on my limited experience, the 97 models (putra, wira 1.8 and staria's) were fitted with the MMC ecu (the computer box located in your car). This particular ecu could be tweaked in almost every aspect, ignition timing, idle timing, fuel mappings etc. The post 97 model up until 99 or early 2000 were also fitted with the MMC ecu, but the tweaking of the ECU was limited. From mid 2000 onwards, proton replaced the MMC ecu with the Siemens ones. The only benefit from this move was that the moving parts found inside the TB (throttle body) did not break easily as opposed to the MMC ones. As you may know for example, if you can alter the fuel mapping of a car (adjust the ecu) you can expect more HP due to higher air/fuel mixture. The 97 proton's ECU allowed you to modify and tune the car to perform better.That is probably the only reason for most people saying that the 97 models were a lot better.There may be other factors, but I'm rather unsure about this. The only thing I know for sure is the use of different ECU's (computer box or electronic brain). Hope this helps you. I'm open for corrections if I've supplied the wrong information.</blockquote>

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