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Message: <blockquote data-quote="Northiswara" data-source="post: 2759007" data-attributes="member: 21138">the connector is sth like the IDE hard disk connector but it is not IDE connector. dont think u can buy the connector. u know proton has a palm that can connect to the ecu? well that is the device they use to read the info from ecu and re-program some setting, eg idle rpm, air con on rpm,ignition timing(depending on ecu model and type. old wira engine is not 100% control by the ecu, newer wira using siemens ecu are all contol by the ecu so u need the palm to program idle and ignition timing degree, etc etc); those basic stuff.the ecu itself is not built from 1 chip. it contains capacitors, transitors and a few chips inside. if u can read the circuit board then maybe u can figure out how to copy out the setting then replace the ROM with RAM. i not electronic engineer. so cant help u on this. u have to find electronic sifu or ecu sifu.another way to tune the air fuel ratio is u can actually buy a AF controller which is cheaper a bit than the piggyback ecu. or u can DIY make it; surf for more info from the net to build it. currently a fren is thinking of building this device so far no news yet.u can also try to install adjustable fuel regulator to tune the fuel pressure, then u can see some performance and fuel saving also. as far as i know wira is running on richer air fuel so u can lower the fuel pressure a bit to gain performance and fuel saving. this takes a bit time for u to adjust the regulator then test run then adjust again.other than this i not sure, better ask mechanic.</blockquote>