No. Spawning the Infernus will not block any achievements or trophies.
To spawn the Infernus, bring up Niko’s in-game mobile phone and dial the following number: How to Activate the Code gta iv infernus cheat code
The Infernus isn't just for show. In a game governed by "Euphoria" physics, the Infernus stands out for several reasons: gta iv infernus cheat code
If you're experiencing issues with the Infernus cheat code, here are some common problems and solutions: gta iv infernus cheat code