ok i was at the track a week ago and i was seeing all the wrx and wrx STI people were putting bags of ice on there tmic. does that really work? i dont think it does but im curious

 

Why wouldn't it work? Keep the TMIC really cold for those 12-15 seconds

Might work a little bit!

 

I think they do that so the air temp's don't get too hot. I have seen subaru guy's put ice on your TMIC and autox with the ice; fill up again after their run.

Wouldn't they have to worry about the motor cracking with hot motor and cold water dripping on it? That doesn't seem like a good idea to me.

 

I was doing a lil bracket racing in my 91 TII and was dialed in at 13.9 doing really well on not breaking out.

Left a bag of ice on the tmic for about 15 minutes. Ran a 13.72...I broke out big time and lost. Kinda mellodramatic

Edit - Yeah, I double bagged my 5lbs bag of ice...so water didn't drip down on the hot parts.

 

just get a fogger and put it on your tmic

 

There is so little water dripping onto the engine that whatever does fall down will just quickly evaporate. I haven't heard of anyone "cracking" their engine just by putting a bag of ice on top of it!

Ice and dry ice cal also be used to cure vapor lock.