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Recent content by We're on Boost

  1. We're on Boost

    ECMlink Help with tuning SD. What next?

    I think if you don't already have an account at AliExpress and you go to the web page for the Chenho sensor in the next ~8 hours they will give you a price of $1.32 and free shipping 🤣 🤣 That's what I just did. They showed it as a new customer only offer, and quantity of 1 only, not more than...
  2. We're on Boost

    ECMlink Help with tuning SD. What next?

    This one, the Chenho, was $10 yesterday when I looked at it. Now it's $1.32 🤣This one I didn't see yesterday, but I see it is $17.77 today.But it sounds like you are saying that neither one of these is the one you bought? On your shipping updates, they would probably show the city of...
  3. We're on Boost

    ECMlink Help with tuning SD. What next?

    That's pretty interesting. Did you have tracking on the shipping? Wondering where the shipping to you started from. Is it a Chenho brand? I'll keep my eyes open for any updates you might have on these.Man, when I google "Ruian Chenho Auto Electric Co Lt" it gives me a ton of results. Even a...
  4. We're on Boost

    ECMlink Help with tuning SD. What next?

    Yes, it is a piezoelectric microphone.Yeah I think that's how it's going to turn out. I think an expensive meter like a Fluke 87 would do pretty well for the normal running (no knock) parts of it. But a meter like that costs $450 these days, and I don't know that it would pick up the knock...
  5. We're on Boost

    ECMlink Help with tuning SD. What next?

    I'm thinking the IAT input might not work at all for this, because maybe the knock sensor voltage is ac rather than dc. So then an ac voltmeter might be more like what you'd need (Vac on a multimeter). I can try to check this out sometime in the next week or 2 here on my car. I still have...
  6. We're on Boost

    ECMlink Help with tuning SD. What next?

    If you end up trying one of the non-OEM knock sensors that came up in this thread, or even trying to verify your old one for good or bad, we might be able to evaluate how close it is to a known good OEM sensor by comparing its behavior to logs like this where the knock sensor voltage has been...
  7. We're on Boost

    ECMlink Help with tuning SD. What next?

    Well that part of the log, from 173 sec to the end, looks good to me. I can even see there that when rpm starts to drop a little, that is when timing jumps up to a high advance. Which would help pick up the rpm. So it's like it says in the help, timing at idle is varied to help control idle...
  8. We're on Boost

    2G Smoke on cold start

    Yeah if the valve guide IDs are just a little too big it lets the valve stems wiggle around sideways too much and your new stem seals can go downhill pretty fast, or something like that. That's what it was the only time I've ever had this. That was on a 1970 Mercedes 250 sedan gasoline motor...
  9. We're on Boost

    ECMlink Help with tuning SD. What next?

    I just noticed that the ? help on the RPM/TPS page says that timing at idle is varied to help control idle speed. Not just the ISC. So maybe this is where the unexpected timing numbers are coming from, and why they don't match the chart we can see. I think it would be interesting if there was...
  10. We're on Boost

    ECMlink Help with tuning SD. What next?

    The 17-02 log looks pretty decent. I've been looking at the part after the throttle blip where the rpm gets down into the 700's at 8.4 seconds. At the same place the wideband gets maxed out full lean (even more than maxed out - it hits 4.14 raw volts LOL) Maybe you could say that it's all weak...
  11. We're on Boost

    ECMlink Help with tuning SD. What next?

    Basically, your ecu cuts the fuel to 0 (InjOn) whenever you take your foot off the gas (IdleSw=1) and your rpm is greater than your target idle + FCoffset. (There is actually a delay of about 0.7 seconds to do this cut). Then as your rpm drops (foot still off the gas), the fuel is supposed to...
  12. We're on Boost

    ECMlink Help with tuning SD. What next?

    You might have a vacuum leak or you might have a bad ISC. I don't think you've replaced yours have you? The ISC has a test or 2 but it's almost a waste of time because a bad ISC tests good usually from what I've seen. Anyway, in this last log, the 15-18 log, it looks pretty likely that the ISC...
  13. We're on Boost

    ECMlink Help with tuning SD. What next?

    Yes, I think if you have it adjusted so that the closed loop trims are a little negative ("pulling") in this region just before and as you go into open loop, then, as soon as it goes into open loop it should immediately switch from trying to be stoic to running whatever your table says which...
  14. We're on Boost

    Street Build ITFLYS - 1Gina2G

    In the install pdf they have a paragraph about the return orifice. It says "The DMR-RA is equipped with a removable flow orifice. Radium Engineering has optimized the size, shape, and material of this orifice for all single and multi-pump applications. The orifice will NOT need to be changed...
  15. We're on Boost

    ECMlink Help with tuning SD. What next?

    Do you know what model of fuel pump is in there? If we knew what pump it was, we could use the flow chart for it to estimate when it will be going over the edge.
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