Since 2002 when I started boosting my LT1 I wanted ALARM LED's, visible somewhere infront of me like by the TACH, or SPEEDO, or even Windshield to let me know if something's horribly wrong... the closest I could find was SCANMASTER for LT1... it was ok... pretty useless really since it had to real time triggers/outputs.
So using the two Digital Outputs on the MVPI Pro I found a way to accurately signal a PE AFR lean condition... and also KNOCK. Very accurately!
(So far I haven't found info on how to set this up... maybe it's out there, but I got it working exactly how I wanted so figured I'd post again help someone out like me!)
Setup the way they are, they both will Trigger after a short delay or period of being lean/knocking... (in my case, either mroe than 0.4AFR lean longer than 10 frames, or more than 2 degrees KR longer than 2 frames then hold the RED/LED ON condition long enough that you should be able to see it... then clear on it's own. I figure it's nice to auto clear since this way you will likely see it clear all by itself during one gear range, maybe 1.5 as long as the condition goes away! Also would be nice to have another stay on (out of line of site) until manually cleared so you know you have logging to do... But.. We need more settings to be able to do this... ( guess a simple arduino setup could take care of this...) With knock Alarm, Auto clear at a max of 99 frames after the situ goes away is about all you get. Still way better than running blind!
PE AFR LEAN ALARM works VERY good. It auto resets, but stay's RED long enough for me to look over at the laptop after a WOT blast to see if it was lean... then it clears itself shortly after if I was lean and now running good though only after you let off the throttle to below 105kpa.... So when you let off throttle and return to normal driving, the RED turns back to green... ready for another WOT run! I may try removing this "only reset under 105kpa" thing to see if I can still catch it during a full throttle run but normally I dont like to look anywhere but straight... so I save looking over at the laptop until I let off throttle... BUT, with a manual, during a shift... it could have time to reset that way... so we'll see.
1) PE AFR Lean ALARM:
PE LEAN ALARM.JPG
2) PE AFR Lean Settings:
PE LEAN ALARM Settings.JPG
3) Knock Alarm Settings: (havent had a run with knock to test.. but it should work the same way as PE LEAN trigger and release...)
Knock ALARM Settings.JPG