I got an MY03 WRX STi and i am now going to fit The Greddy eManage Ultimate into it. At the moment the car runs quite modified it's got front mount intercooler, HKS Super Suction Racing Kit, HKS Twin Power unit and HKS EVC. IT runs on 1.4 bar of turbo and got whole HKS Hi Power exhaust system. I would like to know what will be the gain in terms of fuel consumption, car response, turbo and power after i fit in the emanage Ultimate.
Greddy Emanage is a horrible device.
Please get it Dynotuned from a tuner locally.
Your car is probably fast, but could really be opened up a lot more.
With the intercooler kit, i would buy the front mount intercooler spray, so cool the air down, as well as methanol 
and then you'll be killing everyone.
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