horsepower

Has anyone that owns a 08 G35 (Journey model) had any issues with the variable timing solenoid? I had a diagnostic done and they said that was my issue so i bought the new part and had it installed but my car still shut off on the freeway and is idling funny. Im confused after the diagnostic was...

Modified an Infiniti G37S Coupe with a 6 speed manual to over 500hp and took an unsuspecting salesman for a test drive. See what ampted up the horsepower and Scared this passenger! Youtube video of walkaround and test drive surprise (less than 3 minutes) Your feedback would be appreciated! :)