Chrysler Hemi Trigger
Since fw 1.2.17 also supported with camsync
- In (new) VemsTune, from the primary trigger dialog, choose the Chrysler Hemi configlet (with camsync or without)
- preferrably after config from a similar (eg 8 cyl) engine is uploaded
- Original implementation (2012-03-28 in 1.1.99) was without camsync
- The pattern might NOT appear in the "trigger visual" in VemsTune
- even if configured to this "number of teeth on wheel"=32 and 8 cyl
- For this trigger, neglect any settings proposed by the "trigger visual" dialog.
Pattern (codename m324 / M324)
17 teeth, 2 missing, 15 teeth, 2 missing tooth-pattern found on a V8 Chrysler HEMI engine, works perfect (thanks to Emil Larsson).
Note:
- choose the primary trigger edge, so that in the triggerlog, a block of 17 teeth is followed by a block of 15 teeth
- if the wrong edge is chosen, blocks of 16 appear (not good !)
- with some trick and camsync, it might (?) be possible to get that configured also (as N-2 missing-tooth trigger with wasted spark - but only supported with the correct setting: 17 / 15 teeth)
- if the wrong edge is chosen, blocks of 16 appear (not good !)
Example (first spark after ~1 camrot):
Need help to sync Dodge Dakota V8 - a "High-Output" version of the 4.7 L PowerTech engine y. 2007.
here is triggerlog:
http://www.vems.hu/files/GintsK/Chrysler/v3.3_u008395-2013-12-18-19.45.29.triggerlog
I did not find how to sync it properly. Engines fires-up in 50% cases and shows too many sec trigger error all the time. 1.2.17 Secondary trigger is set to "rising", but seems it wouldn't change the signal timing significantly:
A: This primary trigger is supported by HEMI trigger, the secondary trigger pattern is not, is it possible to reduce secondary to one pulse per cam rotation ? - DB
- Just theoretically. In praxis it is single cam pushrod engine and access to cam wheel requires lot of work. Existing filtering options aren't applicable, like "secignore"? - GintsK