Speed Density is a must for those with high powered Subaru's or anyone that wants to use a vent to atmosphere blow off valve.

When calibrated properly there is no sacrifice in drive ability, your car will drive just like stock. But to properly calculate SD Based fueling you'll need to move the air intake temperature sensor from you pre-intercooler location to a post-intercooler location.

This kit allows you to move the intake air temperature sensor from the factory MAF Housing to the Upper intercooler upper pipe without cutting any wires

• 100% PLUG AND PLAY HARNESS

• Easy to install

• Custom tuning required

• ALUMINUM BUNG Included (Installation required)

Speed Density (Kit A)

Perfect for those who plan on installing MAF-LESS Intake Pipes

• Completely Plug & Play Wiring Harness
• Requires bung to be welded in for IAT Sensor

Speed Density (Kit B)

Perfect for those who want to go Speed Density but don't want to remove the MAFs, perfect for running hybrid tuning.

• Completely Plug & Play Wiring Harness
• Requires bung to be welded in for IAT Sensor

Important Note:

Plug & Play AEM Wire Harness is included with kits purchased with AEM Sensors