im working on my friends car its a 93 gsr with a b20 block and a 95 gsr head . when he bought the car it ran but didnt move the trans was messed up , so i put a new gsr trans in it and it runs great and drives smooth but as soon as i get rpms up to vtec it throws the check engine light so i put a new vtec soleniod on it still the same problem . any suggestions ? thanks