Had the car out of the garage when a buddy of mine showed up. He wanted to hear how good the V6 sounded. So I rev'ed her up.....a bit and only a bit. The computer apparently limits the out of gear car not moving rev's to 4000. Now I wasn't about to red line the engine mind you but it was strange running out of pedal in my drive way.

 

it is a loop in the CDI unit, the same thing pocket bikes have, there should be a work around out somewhere that jumps a lead between the speedo sending unit and the cdi control box, thereby allowing the full rpm range while not moving.

 

SCT Xcalibrator is another option

 

mine's an manual and it does not have a rev limitor the only thing it has is a speed limitor 111mph 4th gear @2500rpm.