Hi there people wondering if anyone can help me? My friend has a 98 bravo hgt 147bhp and he was wondering if he could put the hgt 155bhp ecu on his for a quick power gain? Any help would be much appreciated. Thanks

147 = cable throttle and no VIS.
155 has VIS (Variable Intake System, shorter intake on high rpms).

Ecu are different plugs

The 147 has a big rectangular plug
The 155 has two square plugs

They are not comparable

He can get a chip from FC Performance which will take the car to 158bhp and only costs around £80

the VIS has different cams too