This has happened for a few weeks for me now. My 8 never had any major issues before and all of a sudden it start doing this. When I drive soft or hard and reach around 5-6k rpm, the engine stutters a little. Same with second gear, but it doens't always stutter at 5-6k, sometimes it could be 7k or even 8k, anyone have this problem? I checked the air filter and maf sensor and they seemed to be ok, mine is a 04 GT manual, nothing modded. Anyone? Thanks!

 

Have you changed your spark plugs?

 

I bet you it's your coils and plugs. Change your wires while you are at it.

Goodluck.

Edit: damn 3 posts in 3 minutes. Incredible.

 

Haven't changed the plugs since I brought it in to the shop awhile ago for those recall issues. I'll look into it I guess. Thanks for the quick responses guys!