Shaking When Launched?!?!?!?

[MADGT4]

Hey People i own a R32 GTS4 and when i launch it which isn't all that often i can feel the front of the car vibrate like when i'm taking off during like 1st and 2nd but when i hit 3rd it goes away.....

But when i'm in Rear Wheel drive it doesn't do it which i don't understand.....

Someone told me it could be my CV joint or something along those lines...... If this is the problem wot will i be looking at for repairs etc etc

Please help someone, i don't want my baby ****in up on me

Any help will be GREAT Thanx

[blind_elk]

It could be something simple like the ATTESSA 4WD cutting in and out. It initially detects rear slip, so activates 4WD, then slip goes away so it goes to RWD which then starts slipping....