Paul Dare Posted January 20, 2021 Report Share Posted January 20, 2021 Hi Guys replacing fast xfi system with thunder (chalk and cheese) on 426 hemi using msd dual sync and struggling with trigger set up dual hall sensors in distributer trigger 1 type set to optical / hall filterlow trigger pull up on trigger edge rising trigger 2 optical filter low trigger pull up on trigger edge rising sync x1 sync position after cly one when cranking with timing light no flash of light nor spark when testing with plug on lead earthed have i missed something cheers Paul Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 21, 2021 Report Share Posted January 21, 2021 Yours setup doesnt sound far away from what Id expect to work. Do you have RPM showing in the software when cranking? Quote Link to comment Share on other sites More sharing options...
Paul Dare Posted January 21, 2021 Author Report Share Posted January 21, 2021 Just checked , yes i do have rpm while cranking Quote Link to comment Share on other sites More sharing options...
Paul Dare Posted January 21, 2021 Author Report Share Posted January 21, 2021 Also trigger type i have set to 1 tooth per tdc Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 21, 2021 Report Share Posted January 21, 2021 Ok that would usually suggest the trigger is working. But lets do a trigger scope just to confirm. Ill attach a video below to show how to do a triggerscope, make sure you only click the capture button when the engine is already turning. Save the scope as a log. Do us a short PC log of it cranking too. Attach the scope, the log, and a copy of your map here and Ill take a look. What's it got for an ignition system? MSD and single coil? How to do trigger scope: https://1drv.ms/v/s!AiYbYlZQuRHPmidU5V2CmTcv6t2y?e=FffhYa Quote Link to comment Share on other sites More sharing options...
Paul Dare Posted January 21, 2021 Author Report Share Posted January 21, 2021 Yes msd 7al2 plus and single hvc coil I have not set a map yet , waiting for my dealer to do a base map do you have a base map to get me to the tuner ? Getting the log not sure what you mean by pc capture Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 21, 2021 Report Share Posted January 21, 2021 Ok, tech support emailed me your files. BTW, you can just attach them here next time. There was no log file though - just 2 copies of the map and the trigger scope. I think I see the potential issue without seeing the log anyhow. The MAP sensor calibration is wrong, it is showing 238kpa with the engine off - it should show the same as the BAP (baro) which was 101.1kpa. Your MAP limit for your current coolant temp was 160Kpa, so you would have had a full ignition cut since it is "over boosting". Quote Link to comment Share on other sites More sharing options...
Paul Dare Posted January 21, 2021 Author Report Share Posted January 21, 2021 I saw that when i was going through the set up . I tried several different sensors and rechecked my wiring using a brand new 2 bar pat premier unit . I replaced all sensors and injectors when i installed the link system so that i started with a complete new system Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 21, 2021 Report Share Posted January 21, 2021 Yeah, but your calibration is obviously wrong. Why would a 2 bar sensor have a 450Kpa calibration point? Do you have a link to the sensor or a datasheet? Quote Link to comment Share on other sites More sharing options...
Paul Dare Posted January 21, 2021 Author Report Share Posted January 21, 2021 I agree totally i do not have a link to the calibration for my unit cheers Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 21, 2021 Report Share Posted January 21, 2021 For now set your MAP sensor calibration to Subaru V7-8, I reckon that should get it close enough to allow it to run. Quote Link to comment Share on other sites More sharing options...
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