How do I get rid of that bogging/hesitation I feel when I launch my 04 G35 coupe 6MT?

 

Learn to launch

 

When was the last time your spark plugs were changed or maf sensor was cleaned?

 

I did both immediately after I bought the car.

 

Turn vdc off?

 

That would be a big one. Otherwise you just have too much grip and not enough HP.. decrease grip or increase HP

 

Is it possible your clutch is slipping?

 

This... as soon as you start to break the rear end loose... VDC will cause the bogging effect as it reduces engine power to compensate for what the ECU thinks is the vehicle loosing traction..

The bogging down is a typical response to a slip detection.

 

Thanks. This happens with the VDC off. I put an aftermarket y pipe on yesterday. That seems to have helped some.

 

You might just need a driving style adjustment. What type of vehicle(s) are you coming from? If its from a big torque V8 automatic (maybe with a nice high stall torque converter even) then you will need to keep in mind that although this V6 makes decent torque it isn't going have that off the line punch you might be used to. You may just need to practice clutch engagement on launching.

 

That could be part of it. I also drive an LS1 occasionally. My 03 maxima had more punch than the 04 g35. I had a full exhaust, timing bump and light weight crank pulley. I hear the pulley and axle back do little for the G35.

 

A ypipe helped? Hmmmm. Makes me think your cats may be clogged. Drive it for a while then lay under it and see if the cats are glowing red