razzmtazz Posted March 26, 2023 Report Share Posted March 26, 2023 hi i just installed a can keypad and want to increase boost through the can keypad but i dont want to change settings which are working fine so is there a way i can setup an other axis for the can keypad? radzflexcan.pclx Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 26, 2023 Report Share Posted March 26, 2023 The GP boost table could be used to adjust what is being commanded by the blended tables. Quote Link to comment Share on other sites More sharing options...
razzmtazz Posted March 28, 2023 Author Report Share Posted March 28, 2023 On 3/27/2023 at 4:56 AM, Adamw said: The GP boost table could be used to adjust what is being commanded by the blended tables. Can you please explain? Just now, razzmtazz said: Can you please explain? As you see it's already being used Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 28, 2023 Report Share Posted March 28, 2023 23 minutes ago, razzmtazz said: As you see it's already being used What is it being used for? From memory it had CAN DI1 on it which is not assigned to anything? Quote Link to comment Share on other sites More sharing options...
razzmtazz Posted March 29, 2023 Author Report Share Posted March 29, 2023 21 hours ago, Adamw said: What is it being used for? From memory it had CAN DI1 on it which is not assigned to anything? It's speed input as car is auto so seed based boost control Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 29, 2023 Report Share Posted March 29, 2023 My general advice when considering any control strategy is to always keep the KISS design principle in the front of your mind. For sure there are cases where "simple" isn't enough, but usually you still want the bare minimum that can achieve the result. At the moment your wastegate DC varies with RPM, boost, wheel speed, ECT, IAT, ethanol content, and now you want to add a CAN variable too. That is 7 dimensions of control to tune... However, if you really do want to add more complication, here is how I would do it: Enable a GP PWM table, set it up the same as your existing GP boost table. Note GP PWM tables can only take positive values so use the same numbers but without the negative sign in front. This table is where you will now adjust how much DC you want to remove for Speed Vs RPM. Now we use a math block to multiply the result value from that table back into a negative number: Now put your Math block Boost Vs Speed Vs RPM on one axis of your GP wastegate trim table and your CAN input on the other. Quote Link to comment Share on other sites More sharing options...
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