GrimmSpeed Top Mount Intercooler Kit w/ Splitter - Subaru WRX 2015-2021 Tool Tray Does not require any cutting

Does not require any cutting or modification of stock components

Justification for the second came after installing other intakes

They give you the factory fitment you have been waiting for

Countless revisions were tested in flow simulation before they finally found exactly the characteristics that they wanted

GrimmSpeed Top Mount Intercooler Kit w/ Splitter - Subaru WRX 2015-2021 Tool Tray Does not require any cuttingReplace that undersized, plastic stock intercooler with a GrimmSpeed Top Mount Intercooler Kit, featuring cast aluminum end tanks, large bar and plate core and TIG welded construction. The factory FA20dit TMIC is well suited for stock applications, but when boost levels are increased, the higher post turbo air temps contribute to pre detonation (or 'knock') and loss in power. The GrimmSpeed intercooler is designed to keep charge temps consistent