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  1. ECMlink Help with tuning SD. What next?

    Like Justin said, my understanding is thay we should tune to get combined fuel trim closer to zero at idle, when fully warmed up.
  2. ECMlink Help with tuning SD. What next?

    UPDATE:Recap: We had retarded the intake cam, from 6 degrees advance, closer toward "normal", and set it to 3 degrees advance.I had to increase VE several % to get airflow back to 0.25g/s. The vacuum at idle with this new cam timing was slightly more robust, and after changing the settings a...
  3. ECMlink Help with tuning SD. What next?

    Definately DA timing affects closed loop.But something else is also acting on it.
  4. ECMlink Help with tuning SD. What next?

    I worked to keep airflow/rev the same, 0.25g/s
  5. ECMlink Help with tuning SD. What next?

    I appreciate the clarification. We have taken steps to minimize the hunting by keeping the differences in that area smaller.This car doesn't seem to like the timing so low at idle, so I'm thinking we might have to try moving it a little higher.There is also a reasonable possibility that this...
  6. ECMlink Help with tuning SD. What next?

    I had increased the timing on the top left corner of the table to mostly 12s, ie. in between Evo8 and 2G base settings.Next time I work on this, I do believe I will try increasing the base timing around the idle area a few degrees more i.e. closer to 15 degrees like the 2G timing at 1000rpm...
  7. ECMlink Help with tuning SD. What next?

    This is a very useful explanation. I just changed mine to 470. It does seem to be helping. Log attached.Unfortunately, I didn't read your entire post before I started logging today, so I didn't capture the ISC position before startup. However, I did capture the keyoff, and we can verify that...
  8. ECMlink Help with tuning SD. What next?

    We have tried a variety of idle rpm settings. It seems to like 850-900 best.I've also tried various settings for this, typically between 100 and 200. I haven't found that it provides any significant improvement or really any difference at all. I would love to learn more about how this feature...
  9. ECMlink Help with tuning SD. What next?

    Idle problems not fixed.I can confirm that the ISC is the same model, "STANDARD MOTOR PRODUCTS AC146," mentioned above, but it does not seem to be working properly IMO.We have the BISS set to provide a baseline ISC position of ~30 at warm idle. When we rev it up, the ISC position rises, then...
  10. ECMlink Help with tuning SD. What next?

    I removed and disassembled the throttle body again last night. I messaged the brass plate with a file to remove some high spots to help give it a better seal, and smashed the throttle plate screws with a punch to ensure they can never fall out. We also replaced the BISS o-ring with an official...
  11. ECMlink Help with tuning SD. What next?

    Yes, we already replaced the ISC with a RockAuto inventory item. Seems to be responding as expected.Thanks for this. I'll try that.Exactly!Yes, I believe they are the real deal. We will probably take it to the 1/4 mile drag strip sometime this summer and try this. Some of the other racers...
  12. ECMlink Help with tuning SD. What next?

    91 :-(We did run a full tank of 93 in it, but it really didn't seem to make any significant difference.Worked on it for a few more hours today: - moved variable intake cam setting to 3degrees advance. (was 6) - triple check base timing = 5degrees - double check TPS sensor (got 5V with full...
  13. ECMlink Help with tuning SD. What next?

    We installed the BPR8ES plugs yesterday. Car runs fine, but still seeing excessive knock at part throttle. Picture of plug and log attached.
  14. 1G Where to buy 1G knock sensors in 2024

    I'm having trouble figuring out where we can purchase replacement knock sensors in 2024. I've read some older threads, and read a few mentions of alternate Mitsubishi part numbers that could work.We keep seeing this phantom knock in our logs.The goo seems to have leaked out of our sensor so...
  15. ECMlink Help with tuning SD. What next?

    Installed brand new NGK BPR7ES plugs gapped at 0.027.We did one WOT pull and spent a bit of time idling, while we were checking timing and BISS.Any plug reading gurus out there? (Photo attached)The old plugs are NGK BR7ES which were gapped at ~0.029. I have attached of picture of it as...
  16. ECMlink Help with tuning SD. What next?

    not sure yet... when we tried to remove it, the fittings on those lines were all seized. We did blast them with anti-seize but it's still on the "to-do" list.In other news, we got the alternator replaced and I continue to refine the SD/VE table. It's running better and better.Another thing...
  17. ECMlink Help with tuning SD. What next?

    That looks like a really good solution. Thanks for sharing that!
  18. ECMlink Help with tuning SD. What next?

    Thank you. I will certainly make this change... I was scared of grounding anything directly into ECU harness, just in case the ECU ground was not great, I didn't want to put any extra load on that tiny ECU ground wire. Grounding to the same location makes sense though.Where is the ECU...
  19. ECMlink Help with tuning SD. What next?

    Right, I meant to say closed loop.
  20. ECMlink Help with tuning SD. What next?

    Exactly. I typically use fuel trims to tune VE in open loop closed loop anyway, but when they didn't match it was confusing me.I just looked again at one of my recent logs, and I think 1.05 Lamba would help make the AFR agree more closely with ECU fuel trims around the 14.7 AFR range.Yes, I...
  21. ECMlink Help with tuning SD. What next?

    I feel pretty old... but l'll take that as a compliment. 😎
  22. ECMlink Help with tuning SD. What next?

    This gauge is supposed to have a range of 10-17.I did change the 4v Lambda value a tiny bit lower than the factory says it should be, to help get my AFR readings in ECM link better aligned with what the engine was doing with fuel trums under closed loop conditions. I found with the "normal"...
  23. ECMlink Help with tuning SD. What next?

    I noticed that. We had an intermittent wiring issue on the back of the WB gauge. I think it goes to a minimum of 10.1 when it isn't working properly. Thankfully we aren't simulating the narrowband signal with it.
  24. ECMlink Help with tuning SD. What next?

    It's been a while, so I figured I should post an update.I had the car running well but still not satisfied with some of the log data, I continued to tweak and refine the tune. Each time I spent some time tuning, it ran just a little better and a little stronger, so I persisted in working on it...
  25. 1991 Eagle Talon Tsi AWD

    It's been a while, I figured I should post an update.I had the car running quite well but still not satisfied with the log data, I continued to tweak and refine the tune. Each time the tune got better, and the car ran a little stronger, so I persisted to keep working on it.I think I have the...
  26. ECMlink Help with tuning SD. What next?

    Once I got my SD table sorted out a little better, it became clear I needed to take my global fuel a little lower. I subtracted 2% more from Global.It was able to pull to almost 7k rpm without running out of Injector duty and power didn't start to drop off rapidly until nearly ~6500 now...
  27. ECMlink Help with tuning SD. What next?

    I feel like some of the drop off after 6k is not just the possibility that the turbo might fail to maintain adequate boost and/or airflow, but also that our injectors are _really_ running out of juice anywhere after about 4500rpm. The injector time simply does not stay linear after approximately...
  28. ECMlink Help with tuning SD. What next?

    I also really appreciate the insight into your timing table and feedback on ours. Also thank you for all that turbo information and advice. I am a novice when it comes to this DSM/4g63 stuff.The other car will probably get the Turbonetics back that we got with it. It seems as though it is a...
  29. ECMlink Help with tuning SD. What next?

    I had to retard the timing a bit more in a few places to eliminate knock. Most of it was at fairly low RPM, e.g. the knock I complained about earlier.Power is still really good. I could probably add a bit of timing up top, but I think I'll wait a while. I would rather keep it safe/reliable for...
  30. ECMlink Help with tuning SD. What next?

    Took some more logs today. Removed some timing again to stop knock at part throttle.
  31. ECMlink Help with tuning SD. What next?

    I don't really understand what this means... do I need a bigger turbo? 😂 :sneaky:
  32. ECMlink Help with tuning SD. What next?

    It really seems like a bug in the software implementon IMO. If mashing the throttle doesn't generate a significant TPSDelta, what would?I have seen a TPSDelta of 2-3, but only once or twice in the ~100 logs I have collected in the last several weeks.Reading other tuning guides on this forum...
  33. ECMlink Help with tuning SD. What next?

    I didn't capture a log including the knock at low/part throttle, but the log attached clearly show the temporary lean condition on TPS change scenario fairly well.I would expect BaseTipInTPSAdj (aka accelerator pump in the old days) to be the right solution to this problem, but given we see...
  34. ECMlink Help with tuning SD. What next?

    Yes. I have posted these questions directly to ECMLink on their private forum for feedback/advice. I will post back here if/when I get anyYeah, it doesn't make sense to me eitherI think I'll wait a bit for some clarity/advice from EMCLink, before I touch anything. It seems like the software...
  35. ECMlink Help with tuning SD. What next?

    We still get a little knock when starting out, i.e. just coming out of corners, at low speed.This scenario, still in closed loop, does show quite lean for about 2 second until the STFT ramp starts to catch up. and the logs don't show any TPSDelta in this either. Similarly, the quick WOT punch...
  36. ECMlink Help with tuning SD. What next?

    We haven't grabbed another log yet, but I think this car's tuning is nearly complete..As far as I can tell, the existing turbo is very likely a td05-16b. The turbo is only rated at ~40lbs/min or ~505cfm.I think we are flowing very near max already: ~300gm/s indicated in our logs is close to...
  37. ECMlink Help with tuning SD. What next?

    I suspect the lack of movement on the wastegate has something to do with the big spring holding it closed. LOLYeah, that's what I thought. I should remove, or at least loosen that spring, and then consider adding a proper boost control to add more boost as desired.Yes, I noticed that. I had...
  38. ECMlink Help with tuning SD. What next?

    Aside from dropping boost, that's pretty much what we just finished working on. I richened the mixture slightly while in boost, and we were able to add about 4 degrees to much of the chart... but that's about it. We seem to be stuck at ~5 degrees @3000 and 12 degrees @6500. Not sure we can push...
  39. ECMlink Help with tuning SD. What next?

    by "keep the timing" I presume you mean, try to keep timing closer to factory numbers? or "keep the timing" where we are at?I feel like I have pulled so much timing out that we could be leaving a lot on the table.
  40. ECMlink Help with tuning SD. What next?

    I thought we had 93 Octane but the best readily available fuel around here is 91 octane. Maybe my AFR targets are just too lean to push the timing much higher?
  41. ECMlink Help with tuning SD. What next?

    Reduced Global Fuel as far as -34.4 but it seemed like it was a little too lean everywhere. (log attached)So, we put global fuel back to -33.4 and it seems like this might be pretty close to where we should be. It still doesn't feel quite right to be going so far astray from the recommended...
  42. ECMlink Help with tuning SD. What next?

    Whoops. Yes, Cyclone. :heystupid:We do have coyotes around here though :)
  43. ECMlink Help with tuning SD. What next?

    So far, boost is holding +23lbs from 4000 to 6000. We haven't taken it further yet. It's a T05 setup. (TD05? I don't know anything about these turbo setups, except that I suspect this one is not entirely a "stock", or otherwise factory setup.I deleted the aftermarket "manual boost controller"...
  44. ECMlink Help with tuning SD. What next?

    Found some "answers" to this question.https://www.dsmtuners.com/threads/anyone-runin-with-the-exhaust-cam-retarded-1-tooth.96264/The "consensus" on that thread, if there was any, seems to be that it works fairly well, and results in pushing the power a little higher in the RPM range:and...
  45. ECMlink Help with tuning SD. What next?

    Yeah, that's my understanding as well.The spark/timing is what it is... the timing light will flash when the cam sensor fires the spark, and the flashing light on the bottom pully will show actual timing.However, this is where it gets a little confusing: Since the crank sensor is on the...
  46. ECMlink Help with tuning SD. What next?

    Just as I explained this, it occurred to me, this could be why our timing is out from expected: Could the intake cam timing having been advanced by 6 degrees make the whole system 6 degrees more advanced than what we measure at the crank? (*edit: No. the spark occurs precisely when it occurs...
  47. ECMlink Help with tuning SD. What next?

    I believe the best we have readily available in our area is rated at 93 (there are a very few stations around here with 94Oct)Yes, we toggled the diagnostic mode in ECU when checking the base timing. It looked like it was very slightly advanced when I started. We therefore moved the cam...
  48. ECMlink Help with tuning SD. What next?

    I was already logging it but didn't have any idea what HPbyAir could be used for. :thumb:Where exactly do you think my timing might be lower than optimum?It seems like it is pretty much on the ragged edge already because I had to pull timing back in several spots to stop knocking. I believe...
  49. ECMlink Help with tuning SD. What next?

    We set global to -31.6 and it is getting closer to target. It ran pretty lean in a few spots, mostly at very low RPMs so I tuned out some of the intermittant knocking. Got a really good pull attached. Looks like we put out ~300ftlbs between 4-5k :hellyeah:I also found this article...
  50. ECMlink Help with tuning SD. What next?

    That makes sense. thank you.I should get a fuel pressure gauge we can log with...
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