first off hi to all. im a proud owner of a 98 sc300, and i want to turbo it. before i do though i was wondering how many people are making 450 to 550 horse or better on the stock internals. i know there not as tuff as the older non vvti motors, but my cousin swears they are'nt that much different. also what about holding a tune, is it harder to tune a vvti motor, or get it to hold one?

 

uhm vvti is not in any way better when going na-t then the older non-vvti motors. harder to tune actually.

the motors are very similar.

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