Ryley Coker Posted May 9, 2021 Report Share Posted May 9, 2021 Already, I’ve got the car running! 1993 Subaru Legacy 2.2 turbo with 1050x top feed conversion. I’m running into an issue where my idle speed is no lower than 1500rpm. I’ve checked the cable and it’s not pulling, TPS was re calibrated just in case. Thoughts anyone? Quote Link to comment Share on other sites More sharing options...
dx4picco Posted May 9, 2021 Report Share Posted May 9, 2021 post your calibration file and a log of what you explained, so we get the best idea of what is going on Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 9, 2021 Report Share Posted May 9, 2021 High idle speed would generally mean too much air. Does it have for an idle valve? Is the 1500RPM with the valve fully closed? Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 9, 2021 Author Report Share Posted May 9, 2021 I has an Idle air control valve. With a 3 wire solenoid on top. Here is the tune I am currently running. 5-9 tune 2.pclx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 9, 2021 Report Share Posted May 9, 2021 That basemap doesn't have an idle solenoid output set. Assuming you do actually have one set I have two thoughts: Idle min clamp is 30% so it won't drop below that Are you sure that the wiring has been setup so that 0% is closed? This can be tested by changing the idle solenoid active state from high to low or vice versa to swap which way is considered open and closed. Unrelated to the above your idle target RPMs should probably be a little bigger than 35-52 RPM, I would expect more like 700-1000RPM and you should also change your RPM Lockout to more like 500 (is currently 1400) because the lockout value is added to the target. Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 9, 2021 Author Report Share Posted May 9, 2021 The IACV is the original 3 wire. I’m not sure where the output should go since I didn’t get wired in separately. Not sure how to adjust the clamp nor target rpms. Never been good with this part. Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 9, 2021 Report Share Posted May 9, 2021 The ECU won't be doing any idle control because it hasn't been told which pins are connected to the idle speed controller as shown in the attached picture. Which plugin ECU is it? WRXV1-2? Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 9, 2021 Author Report Share Posted May 9, 2021 1 minute ago, Vaughan said: The ECU won't be doing any idle control because it hasn't been told which pins are connected to the idle speed controller as shown in the attached picture. Which plugin ECU is it? WRXV1-2? Looks like I might need to tidy up some stuff in that provided sample map It is the link V1-2 ecu. Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 9, 2021 Report Share Posted May 9, 2021 Might be worth copying the idle settings from the supplied sample map for the WRXV1-2. From memory the Legacy pinouts are different to the Impreza pinouts, have you done any rewiring to make it work or just plugged it in? Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 9, 2021 Author Report Share Posted May 9, 2021 The ecu harness has a jumper harness so that it converts it from the legacy one to the version 1/2 wrx. All the pins should match v1-2 wrx. Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 9, 2021 Report Share Posted May 9, 2021 Have a go at copying the sample map values in then for the idle. poking through a 92 legacy pinout and it looks like they are waste spark where the Impreza is Direct spark, has this been fixed somehow in the loom too? This is actually the only difference I have spotted so far, I think the one I have played with previously was a 2.5 non turbo Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 9, 2021 Author Report Share Posted May 9, 2021 Yes I have direct spark with coil packs on there. Those got wired in with the jumper harness between the old and new ecu Alright I got the tables copied, now I am running lean and it doesnt want to idle at at. copied tables tune.pclx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 9, 2021 Report Share Posted May 9, 2021 I only meant copy the idle stuff, that looks like you changed a whole bunch more. Something more like this: 1562229005_5-9tune2 Idle modified.pclx Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 9, 2021 Author Report Share Posted May 9, 2021 I just copied the tables this time. And when I switch between the high and the low, it changes the idle from 1800 to a solid 650 5-9 tune 4 with copied tables.pclx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 9, 2021 Report Share Posted May 9, 2021 so with it in low mode set the Idle Ignition control Prop gain to 0 (just to disable it for this quick test) does increasing the base position table value make the idle speed increase or decrease? (you will have to adjust the cells that it is currently using as indicated by the yellow box) Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 10, 2021 Author Report Share Posted May 10, 2021 It seems to be running pretty well. Kinda smoky (rich) while driving but overall it’s pretty good. My last issue is the IAT sensor. I’ve ran it through the expansion loom with the ground. And I even got a new sensor just to check. But it either reads high/low voltage or 302 degrees. Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 10, 2021 Report Share Posted May 10, 2021 your tune didn't have an IAT sensor setup in it, what sensor is it and I assume you've wired it up to An Temp 2? Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 10, 2021 Author Report Share Posted May 10, 2021 53 minutes ago, Vaughan said: so with it in low mode set the Idle Ignition control Prop gain to 0 (just to disable it for this quick test) does increasing the base position table value make the idle speed increase or decrease? (you will have to adjust the cells that it is currently using as indicated by the yellow box) As for the prop gains it does not affect the idle up nor down. 3 minutes ago, Vaughan said: your tune didn't have an IAT sensor setup in it, what sensor is it and I assume you've wired it up to An Temp 2? I had to shut it off but I have a speed density setup. Yes it is wired in to An Temp 2 Here is the tune with the IAT on. Its showing error with voltage high. But Its wired to the ground of the expansion plug and to the an temp 2. 5-9 tune 5.pclx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 10, 2021 Report Share Posted May 10, 2021 17 minutes ago, Ryley Coker said: As for the prop gains it does not affect the idle up nor down. Turn off prop gain so it doesn't try hold an rpm with the ign timing, adjust base pos to open or close the solenoid to see which way it works. 21 minutes ago, Ryley Coker said: I had to shut it off but I have a speed density setup. Yes it is wired in to An Temp 2 Here is the tune with the IAT on. Its showing error with voltage high. But Its wired to the ground of the expansion plug and to the an temp 2. turn on the Analog Temperature 2 Pull-up resistor (probably 1 kohm (Internal) option) and then clear your fault codes, the voltage in there is showing almost 0 and it wouldn't surprise me if you had it setup while the sensor was unplugged. Quote Link to comment Share on other sites More sharing options...
Ryley Coker Posted May 10, 2021 Author Report Share Posted May 10, 2021 I’ll try that in a bit when I go for my first 50 miles Vaughan 1 Quote Link to comment Share on other sites More sharing options...
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