chrisH Posted April 25, 2019 Report Share Posted April 25, 2019 Looking for a base file for 800 arctic cat. Really though I seen it in a list at one point. thanks Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 25, 2019 Report Share Posted April 25, 2019 Map attached. Note the AC M800 ecu had unique hardware different to all our other ECU's at the time. It still used the VTS software but it was very different internally. So you can only use this map in a AC M800 ecu, it wont work in any other V series as far as I know. AC800 NOT TUNED.pcl Quote Link to comment Share on other sites More sharing options...
chrisH Posted April 25, 2019 Author Report Share Posted April 25, 2019 Awesome, thank you very much, yes it will be used I am ac 800 ecu. Quote Link to comment Share on other sites More sharing options...
Håvard Karlsen Posted June 7, 2021 Report Share Posted June 7, 2021 On 4/25/2019 at 9:08 AM, Adamw said: Map attached. Note the AC M800 ecu had unique hardware different to all our other ECU's at the time. It still used the VTS software but it was very different internally. So you can only use this map in a AC M800 ecu, it wont work in any other V series as far as I know. AC800 NOT TUNED.pcl 37.67 kB · 14 downloads What injector timing do this twostroke use? I have Link storm on my AC tripple turbo. In have no idea what settings for injector timing Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 7, 2021 Report Share Posted June 7, 2021 Notice the name of the file is "Not tuned" so I dont know if the injector timing is relevant or not. Quote Link to comment Share on other sites More sharing options...
Håvard Karlsen Posted June 8, 2021 Report Share Posted June 8, 2021 21 hours ago, Adamw said: Notice the name of the file is "Not tuned" so I dont know if the injector timing is relevant or not. Do you know when to fire injectors on a twostroke? Vipec does have maps for it? Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 9, 2021 Report Share Posted June 9, 2021 You need to determine that on the dyno, every engine/injector/exhaust design/etc will need something different. The ideal timing will likely be somewhere around when the transfer ports are open and the max scavanging pulse in the expansion chamber occurs, with the injection event finishing before the reverse pulse starts pushing back. Quote Link to comment Share on other sites More sharing options...
Håvard Karlsen Posted June 9, 2021 Report Share Posted June 9, 2021 3 hours ago, Adamw said: You need to determine that on the dyno, every engine/injector/exhaust design/etc will need something different. The ideal timing will likely be somewhere around when the transfer ports are open and the max scavanging pulse in the expansion chamber occurs, with the injection event finishing before the reverse pulse starts pushing back. I know vipec have software for Arctic Cat 800. Can you take a look at what injector timing they use? that will be a good start for me. I did see a Polaris layout on this forum. It looked like it had 95 btdc at 3000rpm and moved to 150 btdc at 7000rpm. (It will be when the reedvalva is open, and piston sucks gas in to the crankcase. If someone could check how AC-800 twostroke injector timing is, it would be great Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 10, 2021 Report Share Posted June 10, 2021 The screenshot I attached above is from our old AC800 base map, but as I already said it wasnt tuned, it is probably just a good guess as a starting point. Quote Link to comment Share on other sites More sharing options...
Jeff Farquharson Posted October 12, 2021 Report Share Posted October 12, 2021 I am in need of a Vipec AC 800 ecu! Help! Quote Link to comment Share on other sites More sharing options...
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