Originally posted by lstepnio
You should pickup the latest issue of SCC before you do anything in regards to your intercooler. They performed some experiments with the project WRX and a upgraded intercooler(APS top mount) vs the OEM WRX intercooler. The results are pretty suprising and the only benfit to the upgraded intercooler in their test was that it wouldn't heat up as quickly while sitting idle w/ the motor on. The problem was that it wouldn't cool off nearly as quickly once the car was moving again and it would actually increase in temp before it would start cooling off. They also ran into some other issues resulting in about the same power as they started with and drivability issues even after Vishnu dyno re-tuning the beast. Their car is pushing about 30 more HP on the dyno compared to a stock STi.
Read the article it has some good information.
but money for advertising sells all. sorry, i just cant justify $900 for a slightly thicker top mount. When the car is rolling, it doesnt matter.