missing in top end

What do you mean by top end? How fast are you going when it misses?

Also, which engine do you have?

wen the car is in park step on gas it goes 2 4hundred rpm then drops to about 3and 1/2pm don't no 2 much about new cars wen idol miss a littiethen in driving plenty power in low end but sputter in top end feel a miss wen you put yourhand over the exhaust pipe hope this makes sense thankyou

v6 3800 seres

In park there is a rev limiter on this car. I'm assuming you mean 4000 rpm? The car, also has a top speed governor. It will cut back on fuel when you reach top speed. That's why I asked how fast you were going when it looses power. The tailpipe is not a good check for misfires. A check with an engine scanner will produce far better results, even if no check engine light is on.

ok taking it thurs.day thank you for your time