I am having a problem with my 2000 TA WS6 M6. The problem starts when I am at wot and about 3-4k rpms. It feels like the engine is cutting out. THe ses light is not on but I do hear a rattle from underneath the car all the time. Any advice would be greatly appreciated. Thanks

 

ttt!!

 

do u have a stock cat on there or any cat for thet matter? if so try disconnecting the exhaust and take it for a SHORT ride and see if its better if so replace your cat

 

"cutting out" or just falling flat ?

This could be a wide varity of things from fuel and breathing to bent push rods......bent push rods will make you feel like the car is just falling off in the top end.

Good luck ! !

 

I would check the fuel filter.

 

Well the car just seems to flutter when it is at about 3-4k rpm. I also checked the cats and they are fine. One of my friends said that it could be spark knock. Does this seem like a possible cause?