i took mine up to the limiter on hwy 5 in the central valley of CA. got up to 105 MPH and the limiter kicked in. not bad though. it was nice, smooth, and quiet at 105.

 

Now the trick is to figure out how to remove or disable the limiter

 

I believe you can move the limiter 'up' to a higher speed, change shift points, etc...with one of those plug-in programmer tools. There are some listed here, but these aren't the ones I saw that change the limiter...I remember seeing one on the internet recently, but this is similar to what I'm talking about:
http://www.carolinaclassictrucks.com...m&contentframe

 

Dan SS2471,
What brand are the wheels on your Lightning? I've been looking for a set like that for my '04 STX. thanks,

 

I hit a buck-04, not a penny more. Tried it twice, sea-level and 7,300ft. Same both times.

 

Just saw your question. Those are the stockers. 18 X 9 1/2 painted wheels.