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The VRSF 5″ Stepped HD and 7.5″ Competition Stepped HD Intercoolers are the most cost effective options to lower intake temps on a full bolt on car without compromise. With the 5″ Stepped HD intercooler you can expect to see a 4 degree rise during a 3rd gear pull on the stock turbos. In comparison, the OEM intercooler rises about 32 degrees during the same 3rd gear pull. If you’re upgrading turbos, our new 7.5″ HD Stepped Competition HD has been proven to support up to 850whp throughout a 3rd gear pull with only a 2 degree rise in intake temperatures. The VRSF 7.5″ HD Competition Intercooler is comprised of a much denser fin pack both internally and externally which offers better heat absorption internally as well as heat dissipation externally without sacrificing flow. It’s not uncommon to see intake temperatures drop at the end of a 2 – 4 gear pull due to the Competition HDs larger overall surface area. You can expect to see an intake temperature reduction on a stock turbo, full bolt on car during a 3rd gear pull which is why we recommend the Competition HD over the regular Performance intercooler if your budget allows. For anyone looking to run larger upgraded turbos above 850whp, we recommend our 7.5″ Race core.