Install patch 1.2 and FusionFix in it. Set DelayBeforeCenteringCameraKB to 5 and SkipIntro to 1 on GTAIV.EFLC.FusionFix.cfg.

VC:NE Patch v1.2 for GTA 4

Install Simple Native Trainer v6.0.

GTA 4 Simple Native Trainer v6.0 Mod - GTAinside.com