My 2006 Td5 has been running all well and good since I got it in October... until the hot weather! It is completely stock except for an ECU upgrade. When the Landy is out in the sun and warm air, I'll start it up, drive off and there will be about a 5 second delay between my foot on the throttle and the engine reacting! (Dangerous on motorways!!!!) If I pull over and re-start the engine all is fine. I've had it at my local Land rover workshop and they can't find anything wrong with it. They suggested an EGR bypass, but I don't want to invalidate the warranty incase it is something more serious. Before I go crazy... HELPPPPPPP