| That makes me want to ask for more info. From what you've said it sounds like you have an 8 bit ecu with a 28 pin jwt eprom. If this is true and the eprom still has the jwt label on it you can remove it and send it to jwt to have them reprogram it for $100. Or you can send it to Harry at Ztuner.com to upgrade it. If you have a 16 bit ecu which doesn't use the 28 pin eprom you will need to send the ecu to jwt for an upgrade which will cost more (only one I would trust for that). In whichever case, either ecu can be upgraded to NISTune if you want to go that route. There has been some issues with NISTune and the 16 bit ecu's but Matt at NISTune has been able to work with them. See this link. [ http://forum.nistune.com/viewtopic.php?f=12&t=1224&start=0 ]
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