MMCB

Hi guys I've noticed that after I've driven my S2000 hard on track when I come into the pits it runs very lumpy and wants to stall? Any ideas? I also use this car daily and it's normally fine

MMCB

no-one?

tbpom1003

that's weird. my car runs better after I drive hard on the track.

what mod have you done?? do you have the same symptom at idle or neutral?

MMCB

The car is completely standard engine wise. I come off track turn of the engine. Then when I restart it say 20 mins later it's runs very rough

AZfury

maybe just heatsoaked?

vtec9

When you say running rough or lumpy, are you referring to idle, or power delivery when on the throttle, or both?

MMCB

when I restart the engine after track work the idle is very very low and wants to stall with the car shaking badly, once the rpm is ups it seems to be ok

S2K_Vtec

Pop the hood and let everything cool down. Everything is heat soaked including the intake so all the air coming in is hot, the intake temp sensor reads this and leans the fuel out thus less fuel less power. Mine does it on hot muggy days.

vtec9

That is my thought as well. ECU isn't adjusting idle properly to account for intake air temp change.

MMCB

Thanks for the replies guys I will keep an eye on things