Whats the power diff from a SL DOHC VR4

how much power does each one have from a sl all the way to a vr4
 

Originally the 3000Gt SL had 222 HP.  The original VR-4 had 300 HP.  In 1994, they increased the boost by 2 psi (from 9 to 11 psi), giving the VR-4 320 HP.  In 1997, modifications dropped the HP on the SL to 220 HP.  Also in 1997, they introduce the base model which only had 161 HP.  With very few modifications, one can increase the HP on the base or SL model by about 25 HP.  On the VR-4, one can simply modify the boost up to about 15 psi and probably end up with about 350 to 380 HP.  Beyond that, one would need to modify other components such as the injectors, fuel pump, waste-gates, etc.

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