The APS dual entry top mount intercooler with twin induction to better spread the cooling effect on the incoming charge is designed for maximum street performance. With the significantly lower pressure drop across the intercooler, it's a perfect partner for a high output roller bearing turbocharger. 

For optimum performance, the intercooler core itself is internally finned with large internal charge air channels and has a huge intercooler core volume of over 6,900 cm3 (3900 cm3 standard). This results in huge cooling capacity with very high contact area for heat transfer and the highest volumetric air flow rate. Just as importantly, the APS cast alloy end tanks ensure even charge air distribution through the intercooler core without "hot spots" commonly found in aftermarket intercoolers. 
 

 And there's no general purpose plumbing behind it either. The APS high temperature silicone 3 ply connection hose guarantees reliable air and is designed to withstand and tested to extreme boost and temperature conditions.
As boost pressure is increased, the temperature of the inlet air increases and robs power from the engine. This APS intercooler utilizes ensures a cool inlet charge and is a perfect partner to the APS air entry duct. 
 
  
  
APSWRX-II MY97 - MY98 WRX
APSWRX-III MY99 - MY00 WRX and STI 2 Door Version 5, STI 4 Door Version 6
  

  

Dual Entry High Performance Intercooler