[email protected] Posted February 25, 2020 Report Share Posted February 25, 2020 (edited) I would like to add a finger operated button launch control to my Toyota 2zz with Xtreme and drive by wire throttle. How do I wire this in? The car is used for targa rallies and we have multiple stop starts for passage controls, stop/go boxes per stage!! All help appreciated Edited February 25, 2020 by [email protected] Clarity of purpose Quote Link to comment Share on other sites More sharing options...
Simon Posted February 25, 2020 Report Share Posted February 25, 2020 The button would be wired to a Di, That Di is then assigned to control the Launch control function. A very simple setup shown below switch would have to be active for 1 second to turn on the launch control limit of 4000rpm Quote Link to comment Share on other sites More sharing options...
[email protected] Posted February 26, 2020 Author Report Share Posted February 26, 2020 Thanks Simon...I assume one would use a normally open switch to earth to activate?...any way to reduce the 1 second delay ? Cheers Peter Quote Link to comment Share on other sites More sharing options...
Adamw Posted February 26, 2020 Report Share Posted February 26, 2020 4 minutes ago, [email protected] said: I assume one would use a normally open switch to earth to activate? That is usually the easiest option, although the ECU is happy to work with a ground or +12V signal and normally open or normally closed is fine. 5 minutes ago, [email protected] said: any way to reduce the 1 second delay ? That is the 3rd setting down in the screenshot Simon attached. You can set it to zero if you like. The "arming time" setting is more commonly used when it is activated by a clutch switch, so you set it longer than a normal gear shift takes so it doesnt activate during a gearshift. Quote Link to comment Share on other sites More sharing options...
[email protected] Posted February 26, 2020 Author Report Share Posted February 26, 2020 Thanks Adam Perfect info!! We could have 6-10 stop/go boxes and passage controls per stage on UK targa rallies with 15-20 stages..that is a lots of stop-starts hence the steering wheel button is ideal!! Quote Link to comment Share on other sites More sharing options...
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