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Going to go OT because not sure the OP even cares about this thread :)


cptnsx - Question for you please.  What kind of cooling are you seeing in your IAT?  Is it always relative to ambient?  Say... your cooler will always cool IAT to +/- XX F degrees consistently regardless of ambient temps?


Here's my latest data points from my most recent track events this year.  


- Streets of Willow ambient 110F/38C.  With water injection resulted in IATs of 125F/52C.  Delta 15F/14C

- Buttonwillow ambient 75F/24C.  With water injection resulted in IATs of 100F/42C.  Delta 25F/18C  <<<---- This as today


I've been logging some amazing results especially today.  I easily record deltas of 100F with the water injection turned off so only a 25F delta is more than I expected.  The interesting surprise is I logged .5-1psi of increased boost today.  My Autorotor typically maxes out at 7.1lbs in a typical sea level day.  I was hitting near 8lbs of boost today at Buttonwillow.  I recorded 38C of IAT at the time my boost is at it's highest.  The water chilled air may have had a lot to do with it.  Had to retune that section of the fuel map because didn't really expect it!  I also thought the additional water would kill my HP but it seemed to have power for days.  Car felt great all day long. 


What's interesting is when it's off boost and the IAT begins to heat soak.  I'll see cruising IATs of 60-65C.


Please share your results.  My biggest concern is if my IATs are too cold.  I might be willing to give up some cooler IAT if it means I dump less water into the cylinders.  I believe you're on the SOS Laminova?  If you're seeing this cool of IATs on your engine, it would make me feel better about a safety buffer in mine :)


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