Subject	Yes, there is a ROM table to control Idle timing
Posted by	zromtech on March 03, 2013 at 8:39 PM
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In Reply To	Has anyone found the ECU code controlling the On Idle Timing posted by Gordo 93TT Daytona on March 01, 2013 at 10:02 PM
Message	There is a 16-byte table at ROM location 0xF520 that controls the timing used during idle. It is indexed via RPM / 200 and contains the desired idle timing value + 128. The OEM table (in hex): $8F, $8F, $8F, $8F, $8F, $8F, $8F, $8F, $8F, $8F, $94, $94, $94, $94, $94, $94 (in decimal): 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 148, 148, 148, 148, 148, 148 subtracting 128 results in actual timing values: 15, 15, 15 ,15, 15, 15, 15, 15, 15, 15, 20, 20, 20, 20, 20, 20 So, like you observed, the Idle On timing transitions from 20 to 15 degrees right at 2000RPM. Can anyone confirm if Zem/Nistune let you modify this table?
Follow Ups	Has anyone found the ECU code controlling the On Idle Timing - Gordo 93TT Daytona 22:02:34 03/01/13 Sounds like you need a standalone - TTZ2NV(EPTmotorsports) 00:23:49 03/02/13 I'm using the Zemulator to set timing and fuel maps - Gordo 93TT Daytona 17:42:13 03/02/13 get a nistune and retain your ash internal boost controller - Dane (Houston) 01:22:19 03/02/13 why don't you advertise that you're a nistune dealer? - aliaZ 08:40:41 03/02/13 I do locally in Houston but started including it in my - Dane (Houston) 04:57:39 03/04/13 that's true (n/m) - aliaZ 15:28:20 03/04/13 Get rid of the boost jets and your boost will hit harder - TTZ2NV(EPTmotorsports) 09:02:11 03/02/13 Can Nistune configure ON IDLE Status functions? - Gordo 93TT Daytona 17:49:39 03/02/13 Re: Has anyone found the ECU code controlling the On Idle Timing - zromtech 15:30:19 03/02/13 yes, the engine is fully warmed. The issue of concern - Gordo 93TT Daytona 17:40:08 03/02/13 Yes, there is a ROM table to control Idle timing - zromtech 20:39:25 03/03/13 Anyone know if Zem/Nistune lets you modify this table? (n/m) - Gordo 93TT Daytona 10:22:49 03/04/13
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