Actually extractor mod makes your engine breathe better not increase hp, therefore technically no increase in power....lol
But it does feel different especially when it comes to torque. Noticed that it is also easier to reach higher speed than before. Still, there is some kind of improvement isn't it? From what I know, it helps in exhaust gas scavenging and allows quicker exhaust flow rate.
Bro., you say built quality not good, but if buy Inspira, is re-badged Mitsu, so many parts can be localized too, so might get same problems as Suprima?
If any parts got problem, can just replace it with ori Mitsubishi parts. But if Suprima, only got Proton parts as replacement.