I just got a used Tomei System 1 ECU installed today, I could immediately feel the difference. The max boost is still 1.3 bar controlled by the EBC, but the engine rev up a lot faster after 3000 rpm, and the turbo sounds louder I don't know why. The low end torque(below 3000 rpm) is noticeably weaker than stock, I guess too much fuel?? but it is still good trade off.

 

You don t have a aftermarket EBC.

 

where do you live? if its in the US, probably not a good idea to be running that ecu on US gas.

 

why not? US 93 is equal to japan's 98....just different calculations.

 

I do have a HKS EVC now.
I live in Hong Kong.
regarding the octane, Japan 100, Hong Kong 98.

I drove my friend home just now and we both thought the car sound and feel a lot more powerful from last night.

 

From what I ve been told the Tomei ECU will remove the boost limiter + you have a EVC

 

I just set it at 1.3bar because I was told the car can't handle more without mods.

 

how much was it

 

around US$450.
The guy said Tomei is more powerful than Ralliart and it could be used with or without a cam mod. The cam will only improve low end torque under 3000 rpm.