I'm related so I get a title.
I had the gears changed from 259 to 373. At first everything was perfect. Car was awesome. I sent the computer to be flashed so the speedometer would be correct. Now when I stand on it the engine revs to 6k and seems to shift into neutral. It is an auotomatic. In other words, it won't shift unless you let off the gas. The throtte response is excellent. If I manually shift and don't floor the gas I can keep it from revving out. I wonder if the computer change had anything to do with this or is it a transmission problem? Has anyone had a problem like this?