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IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now. Visit Preferences to set your user name Summary of change: vems v3.8 installed on mx5 nb vvt with cam sync using 36-2 crank trigger wheel to allow better sync cam sync modifed to one tooth to allow correct sync angle for vvt wiring The most likely cause of "p259" (=TPIC6A259) chip failure is '''insufficient ground connections.''' Please check GenBoard/Manual/GroundConnections (With good connections and no overload the chip will likely to work 30+ years. However, failing to fix the root cause will likely result in damaging the p259 chip, possibly again and again). It is best to use spare injector outputs, or spare power-IGBT (ignition) outputs to drive relays, solenoids, and only use p259 for warning light, LEDs (with series resistor) and similar signals. The car has a custom wiring loom for the engine. The original car loom has been spliced in to the ecu for the original gauges to work '''Alternator control''' The alternator is normally ecu controlled however I've fitted an aftermarket alternator controller board this is wired to the ecu to disable the alternator on startup and used on high tps to get more power http://www.vems.hu/files/lewisw%20mx5%20nb/v3.3_u023257-A-2026.01.24-16.08.32.vemscfg this is the lastest config at the point of write up. the car is up and running but not mapped yet Optional: Add document to category: Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.