superstockneo

Hey @Adamw just wondering if you've managed to play around with this issue on bench. At the moment i'm still running open loop which runs just fine. I remember you saying a possibility of resistance in the throttle blade itself could cause this?

I've posted one here, it's been discussed but being a 5speed H pattern trans with now way of indicating to the ecu what gear you are in, it is a bit tricky.

Oh I didn't know the Haltech gaugeart can gauge is proprietary to work with haltech ecu only. My apologies.

Hi. Are you looking the set the gauge up or configure the canbus parameters in Link? If setting up the gauge you'd need to download the app (ios/android) and connect it via wifi.

Thanks @Adamw I'll try and give that a try

Just an update. I've reverted the idle base position table to span a single axis. and i have reverted to open loop idle. Was stuck in a 2 hour traffic jam yesterday with IAT hitting 69degC (kinda hot because i'm running an open pod). Seems to be running pretty good with barely noticeable undershoots or overshoots during AC operations. Only the neutral decel overhangs. But i did managed to max out the speed lockout. Open loop seems to run better, but I dont have a log for this. Will take one with i've got the time.

I tried the method of zeroing the AC offset table, and span the idle base position table vs ac request digital input. I've increase the clutch delay to 1sec. i did however left the AC Idle up actuator at 50rpm unchanged. it did slightly improve but occasionally i do get undershoots down to 900rpm before going back to target which is about 1050rpm. dont get me wrong 900rpm is fine for most engines but mine tends to idle comfortably slightly above 1000, also having solid engine mounts it helps reduces the vibration a bit. But i have to increase the base position on AC by 1. or i should say even numbers. it tends to react slowly on small increments which Adam suggested this could be a firmware issue, or something else in the hardware or tune. because it happens prominently during hot standing traffic or just sitting in the parking lot where IAT is almost 60degC. But Thanks @koracing for the tip

Thanks @koracing. I'll definitely have a go at that. Previously I did bring the timing in the region below 2000 down, it's roughly around 14-11degs now. My target idle ign is set at 10deg. I could try running a lower timing. But during neutral decel will in fall into idle control mode as i believe speed lockout is still activated. i've set my lockout to be at 20kmh if i recall correctly. unfortunately reducing clutch delay did not do anything. Maybe as another workaround i'd revert back to open loop idle for the time being. the issue is just prominent during hot conditions like traffic and such. or idle stationary when ect is around 80deg. i'm not sure if this is related to other tuning matters like fueling etc.

Hi @koracing, appreciate the input. I've tried messing about with the idle actuator integral gain but seems to not getting any changes. i've also tried messing about with increasing base positions. it reduces undershoots but still slow to respond and gets high overshoots during neutral decel. Spoken to @Adamw offline and he believes it could be firmware related. Thanks Adam for looking into this.

LinkEcus do not support direct EGT input as far as i know. Like @koracing mentioned, you would need a controller that can output analog voltage signals for the ecu to interpret. i've used a reveltronics egt-k thermocouple amplifier. they are pretty affordable.

I’ve done with Defi pressure sensors no issues. They’re basically pretty generic 5v 10bar/150psi sensors. Just use the 150psi ti calibration from the dropdown in pclink. As for temp sensors I’m not so sure, i havent gone to the extent of measuring them yet.

Hi, I looking for some advice. I've been chasing around this idle issue especially when conditions are hot (ie; stationary traffic) especially when AC is on. 1. My target idle tends to oscillates a bit 2. When in hot traffic and AC is on. When AC kicks in RPM would undershoot way below target badly and then recovers to target with AC step up after a while. But it happens the same when AC kicks off, RPM will undershoot below target before recovering to target as well. 3. If I try to overcome this by increasing base position or ac step up table, i will get high overshoots especially during situations when the car is moving and not under idle conditions. Such as coming down to a stop, decel and clutch in to neutral. It's on closed loop DBW. Appreciate the help and advice. Throttle is a bosch motorsports 68mm Link to the logs below OneDrive

You can try using the bosch 10bar calibration or the 1000kpa ti from the drop down. Should work fine.

Just an update on this, I did try the GP RPM for fuel cut method to mimic ORFC. But once fuel cut comes in during decel, throttle becomes very lumpy when tapped or blipped. Haven't got around to get a log but will try to get one. Did managed to get something silly with the cut off, but very mild pops i would say. Just pulled out timing on the 4d/5d ign, didn't add fuel tho.

Thanks @Vaughan. I'll give that a try. Time to get silly then. Also interested to know how can I achieve silly ness with the anti lag function tho. seems much simpler. but looks like it needs to with with tps/aps lockouts too.