Live Burns and Stalling remedy
On my MS2PNP, burning changes to the ecu while the car is running results in a split second where the car commits suicide. Sometimes it catches itself, sometimes it doesn't. I've been giving it a blip of throttle when I click burn and it runs fine. However, I'm wondering if this is in any way damaging to the ECU or engine. Is there a better way to burn live changes without upping to MS3? Or am I just paranoid?
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It doesn’t damage the engine any more than a typical fuel/ignition cut, but as far as I know there is no remedy. Set your idle to 1500 target while tuning.
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No damage done. Just do it while idling or blip the throttle and do the burn the moment you release the throttle.
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Perfect. It will still stall at idle (or very nearly catch itself around 250/300rpms, but blipping the throttle works very well. I'll keep doing that!
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This sounds rude, but it's not.
Tune your idle well enough so the blip doesn't kill the engine. It should easily recover from the blip. I know mine easily recovers from 600rpm idle. |
No offense taken, I’m completely new to tuning!
I feel like my idle is pretty solid. I’ve got the stock taper profile. Cold starts up to 1400 or so then drops down to 870-900ish. AFRs mid 13s (yes, low, I’ll try raising the target and see if it helps). Hot starts it drops down to 870 within a second. It seems to recover itself most of the time now, maybe 3/4 times. Maybe I’m missing something. I was blipping while burning, but tonight I tried both holding it at say 1500 and burning and burning after blipping, they both work well. Another weird issue is it sporadically stalls when I open tables. For example, I was messing with Accel enrich tonight, and multiple times I’d open the table and the car would stall/drop. Other times it didn’t. I’ve had the same happen with the VE table, and I think the AFR table too. Not sure what causes it, it seems to be common when I’m using VE Analyze live but I wasn’t paying close attention to what else I was doing in TS each time it happened. |
It’ll do a burn if needed any time you open a table/menu if you have VEAL running.
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That makes sense, thank you!
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finish and install your MS3 and it won't be an issue :)
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:p
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