Warmup lean condition
#1
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So I've been driving my MS1 boosted 1.6 for a while now and mostly it runs great. Idles great, starts great, and once warmed up it cruises and fueling in boost is great too.
My one problem is that for about 90-120 seconds when the car is warming up (coolant temp around 110-120) the car runs super lean (19:1 AFR) and awful. Then you wait about two minutes if you can keep it running and it runs great again. I have tried to overcompensate for this by dumping fuel in with the warm-up enrichment but I know something is wrong and that is kind of a band-aid. Maybe something glaring is wrong. Most of my tuning has involved VEAL and since the car runs so well otherwise I have not messed with much. Some screenshots and my msq attached. Thanks for help!
![](https://www.miataturbo.net/attachments/megasquirt-18/172576-warmup-lean-condition-capture2_zpsprtgdrdr.png?dateline=1464295295)
My one problem is that for about 90-120 seconds when the car is warming up (coolant temp around 110-120) the car runs super lean (19:1 AFR) and awful. Then you wait about two minutes if you can keep it running and it runs great again. I have tried to overcompensate for this by dumping fuel in with the warm-up enrichment but I know something is wrong and that is kind of a band-aid. Maybe something glaring is wrong. Most of my tuning has involved VEAL and since the car runs so well otherwise I have not messed with much. Some screenshots and my msq attached. Thanks for help!
![](https://www.miataturbo.net/attachments/megasquirt-18/172576-warmup-lean-condition-capture2_zpsprtgdrdr.png?dateline=1464295295)
![](https://www.miataturbo.net/attachments/megasquirt-18/172577-warmup-lean-condition-capture_zpsawip428z.png?dateline=1464295295)
#6
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Yes it's getting warmer but this is unaffected by temperature. Car runs great hot or cold out, just awful for about 2 minutes when it's warming up (not immediately, it runs great on cold starts for the first 5 minutes or so, then randomly awful, and then perfect again)
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