This is our NEW kit for the STI/WRX. We have received so many requests for the trunkmount version that we made a listing for the underhood and trunkmount. This version has our famous 1.5 Gallon trunkmount tank for ease of install. Your MAF sensor and your boost line will be connected to Vari-Cool. Vari-Cool will create an internal 2D map based on both inputs. By default, the system will weigh both inputs at 50%. This means both MAF and boost will have equal input on creating your 2D MAP. If any of the 2 inputs increase or decrease the flow will change to coorespond. This requires NO laptop. Just install and you are done. You are able to hook this up to your computer to change the map. If you want MAF or boost to have a greater impact on the flow output, you can easily set that up.

The knobs on Vari-Cool will relate to boost, set the MIN and MAX knobs for your starting and full boost, the MAF range is set within the software and is able to be customized if you wish.

This will allow you to have better control over injection than using just MAF or Just boost. This system will NOT create a stumble like some other systems on the market at startup. Your MAF sensor is always sent a 5V signal when you start your car. Due to our unique setup, you will not have that problem with this kit.