The heart of the ER Competition FMIC is the massive 20″x5.5″x6″ (26.5″x5.5″x3″ with end tanks) high density bar and plate intercooler core. It features 660 cubic inches of very efficient high density bar & plate core (35% larger) versus the factory 425 cubic inches of less efficient tube & fin core. Through extensive testing of different types of intercooler cores (tube & fin, bar & plate) we found that the high density bar and plate core to be the most efficient. Independent testing (all data & dynos shown below have been independently conducted by our customers) has shown that our FMIC is so efficient in cooling that it has cooled intake air temperatures (IAT) to almost ambient (outside) temperatures. We also did extensive testing on the proper size to use to effectively cool the hot charged air as well as fight off heatsoaking (when the intercooler cannot transfer heat away faster than the heat building up from the hot intake air). Heatsoaking is not an issue at all as shown by consistency of the IAT staying in the same temperature range throughout the WHOLE RPM powerband. Also our FMIC recovers so fast after a full throttle pull that once you shift, it recovers completely. This is why pull after pull, our FMIC does not heatsoak. Beat on it all day long and the IATs will consistently be near ambient temperatures. Our Competition FMIC is just what it is, designed for competition. The other intercoolers may be adequate if you lived your life a ¼ mile at a time (with hours between runs to cool down), they will definitely heatsoak under harsher conditions like road racing where youre at full throttle for at least 20 minutes. With numerous laps around our local racetracks in 100+ degree weather, heatsoak is not a problem on our 135i Time Attack race car. With it’s size and ability to support over 600hp, it is most likely the “last intercooler you will ever buy”.