I got my truck dyno tuned today made 424 hp and 480 tq ,The whole time my iat was at 120f to 150f at idle.This is with a stock eaton and 60 deg outside .Could it be vapor locked.the pump is working.any ideas

 

Pretty normal for a stock 'Heaton' being spun up with a pulley. If you see fluid circulating in the intercooler reservoir, it's not vapor locked.


Bird

 

My HD datalogged at 125 deg with an outside temp of 56deg.
I have a 9" lower pulley and 12lbs of boost.

 

do you have an open filter without a shroud? The pre-heated air under the hood will help push IAT II temps up. What did the IAT show at the filter? If it (IAT I) was much higher than ambient at idle then you may be drawing in hot air. Some folks put the shroud (most vendor CAI) around the filter to help keep the warm air out of the intake.