# DBW as Idle control - cant get it under control **URL:** \ **Category:** EMU BLACK / CLASSIC\ **Created:** [May 10, 2025, 5:51pm UTC](https://community.ecumaster.com/t/dbw-as-idle-control-cant-get-it-under-control/3677 "2025-05-10T17:51:14Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![k420\_racing](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@k420\_racing](https://community.ecumaster.com/u/k420_racing)\ **Post date:** [May 10, 2025, 5:51pm UTC](https://community.ecumaster.com/t/dbw-as-idle-control-cant-get-it-under-control/3677/1 "2025-05-10T17:51:14Z")
EMU Black V2.175 plus FW Hey everyone. I am running a K20a with a Honda J37 DBW setup, I want to use DBW to control ASE,Warmup and Idle before handoff for efficiency and smooth control. The DBW is fully functional (I have another map that uses fuel/igniton for idle that is rough but works). Cranking is fine, it starts well, then the idle shoots right up to 2500rpm (and bounces off the soft limiter I have set) when it should be around 1400rpm when cold (depending on CLT), from the logs I can see two things: 1. Idle control is not active 2. DBW blade target is stuck at 7.5% which I think is the cause for the high rpm and probably related to (1). I’ve also noticed its stuck at 7.5% with the engine not cranking!!! Disclaimer: I am not an engine tuner, the MAP has been done already so have not touched the VE map, cam nor ignition tables (apart for 1 degree extra bottom left for low rpm cold starts). I’ve learnt and read loads before I started looking at this and I think I am very close, I just cant figure out the two issues I am seeing and I am STUCK. For diags, I;ve captured a few different parameter log files and the map is here: [EMUDBW](https://ztpam-my.sharepoint.com/:f:/g/personal/kev_sync24_com/Ety0C9fYAlhMt7kHEWXgylIBfSzdxMc0fXGh-xJaGaApdQ?e=AOxcfC) If it takes a professional to take a look then so be it, but I feel its just a simple config. I’d be very grateful if someone could help? Thanks in advance. Kev ---
**Author:** ![baxtercrafter](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/baxtercrafter/32/2130_2.png) [@baxtercrafter](https://community.ecumaster.com/u/baxtercrafter)\ **Post date:** [May 10, 2025, 8:24pm UTC](https://community.ecumaster.com/t/dbw-as-idle-control-cant-get-it-under-control/3677/2 "2025-05-10T20:24:35Z")
Minimum map for idle is at 100kpa , afterstart release rate is too low , idle range is set at 6% while max idle dc is also set at 6% , pid deadband rpm is also very low at 25 rpm, delay to activate also very low at 1ms ---
**Author:** ![k420\_racing](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@k420\_racing](https://community.ecumaster.com/u/k420_racing)\ **Post date:** [May 10, 2025, 9:59pm UTC](https://community.ecumaster.com/t/dbw-as-idle-control-cant-get-it-under-control/3677/3 "2025-05-10T21:59:15Z")
🙂 Better? PS Its High Compresson 12.5:1 with agressive cams. ![image](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/6/6d3b6793d06c25790dbf384e0e3272dd08ddf09f.png) ---
**Author:** ![baxtercrafter](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/baxtercrafter/32/2130_2.png) [@baxtercrafter](https://community.ecumaster.com/u/baxtercrafter)\ **Post date:** [May 10, 2025, 10:13pm UTC](https://community.ecumaster.com/t/dbw-as-idle-control-cant-get-it-under-control/3677/4 "2025-05-10T22:13:08Z")
No, not better. Just press the question mark and read the description, this will help you actually understanding what a parameter does before you enter random numbers✌🏾 97kpa is basically wide open throttle. Why should this be the minimum map for idle control to activate? ---
**Author:** ![k420\_racing](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@k420\_racing](https://community.ecumaster.com/u/k420_racing)\ **Post date:** [May 11, 2025, 2:57pm UTC](https://community.ecumaster.com/t/dbw-as-idle-control-cant-get-it-under-control/3677/5 "2025-05-11T14:57:18Z")
OK - I am at the limit of my knowledge, could someone recommend a tuner that knows the EMU black at a deep level who could help remotely, happy to pay for their time. I am in the UK I’ve tweaked the map as discussed by baxtercraft (and saved it in the directory link in my original post), but things have not improved. ---
**Author:** ![k420\_racing](https://avatars.discourse-cdn.com/v4/letter/k/e480ec/32.png) [@k420\_racing](https://community.ecumaster.com/u/k420_racing)\ **Post date:** [May 14, 2025, 8:16pm UTC](https://community.ecumaster.com/t/dbw-as-idle-control-cant-get-it-under-control/3677/6 "2025-05-14T20:16:36Z")
Issue turned out to be excessive ignition trim contributions, kpa being wrong and also the position min voltage needing to be 0.50v