hey just a quik question about what to expect from tuning my jap spec b18c (98)

current mods:
2.5 mandrel bent cat back with hi-flow cat and flex pipe
stock headers
pod filter
70mm TB

i have a apexi fc with controller and want to get it tuned ( maybe 101motorcafe) and was wondering what to expect power wise? is 125 wheel kw's asking to much??? i have no idea, any help would be appreciated