boost fade

[chrisa4quat]

My car seems to pull quite well bottom end and starts to fade at about 4,000 rpm ish, any ideas?

 

[Rob_k]

the car will pull less well towards the redline as the torque id dropping down. how severe is it?

 

[GSB1]

Sure the torque curve tails off, but at 4Krpm you should be pretty much full kick.

Too early for you to feel anything tailing off.