knupps

Past two summers, when weather is HOT and muggy (air temp above 80 and humidity up), 2009 Honda Odyssey sluggish from stop. Does not run rough - only like a turbo lag. Once it gets going its OK. At speed is OK. ONLY on hot days. First thing in the morning - runs great. At lunch after the weather warms up - very sluggish off the start. Had it to dealer 3X. Serviced the tranny and no change. It does not run hot itself - temp gauge OK. Dealer says no codes thrown. Any ideas? The dealer seems to have none since there are no codes.