It's also going to depend on how you GET that 350hp or so. Intercoolers can only remove so much % of thermal energy for surface area - but if you start with a 24PSi aircharge that's 200 degrees, you'll get less benefit than if you have a bigger turbo or more efficient system that can get that 350hp at 18 PSi and 160 degrees - so you'd need a bigger intercooler with that less efficient system to get the same temp at the throttle body.