Pros
AEM keeps its customers happy knowing its website offers firmware updates and a dedicated forum for the Engine Management System (EMS). The EMS unit, with a built-in wideband UEGO controller for precision tuning, came in handy when it was time to tune the S2K on the new ITB setup. Pre-programmed with various base maps and onboard data logging, the EMS quickly plugged into our existing ECU harness as we uploaded some pre-programmed base maps and set some of the major parameters before the engine fired up without a hitch.
Cons
Tuning something as intricate as a set of ITBs requires some mechanical know-how, and experience behind a laptop and dyno, before you attempt to tackle a large project like this. Although the AEM EMS is designed with user-friendly instructions and an intuitive program sequence-for those who are electronically challenged-we recommend you take your vehicle to an authorized tuner or dyno facility with enough know-how to properly tune you vehicle.
Parts
EMS Unit, wideband O2 Sensor, wire leads, instructions, stickers
Tools
Laptop, knowledgeable tuning experience, screwdriver, pliers, crescent wrench, zip ties
Installation Time
120 minutes.
Notes
The S2K was quick to respond to the new maps and tuning performed on the EMS unit, as an overall improvement of 8 hp and 8 lb-ft of torque was recorded from our initial stab at the throttle. From 4,000 rpm to 5,800 rpm, we noticed a good pickup of 5 to 7 hp and torque, which remained consistent throughout the powerband. The largest margin of increase was recorded at 6,200 rpm as 17 hp and torque were increased over our previous dyno run-a significant horsepower bump when considering this vehicle is still naturally aspirated. Power numbers didn't stop there as we see a gain from 6,300 rpm to 7,700 rpm of 15 hp and 10 lb-ft of torque.