Just drove back from the shops on the dual carridgeway, put my foot to the floor and the acceleration seemed wavy. i.e its wasnt smooth but slightly fluctuated, could see the rev counter jump up a little every sec rather than a smooth movement and you could hear the sounds of the exhaust slightly dipping in sound every sec too.

 

Im thinking its due to boost controller and boost leak, so the boost pressure drops slightly but the controller keeps topping it up?

 

Any idea's?

Mine was doing the same earlier, used the exact same words to describe it :eek:

Sure it wasn't rain getting on the MAF through a cone filter? Causes similar symptoms.

Nope it was dry at the time, havent noticed it before

sounded like this

 

rrrrrrrrrrmmmmmmmrrrrrrrrrrrmmmmmmmmrrrrrrrrrmmmmmmmrrrrrrrrmmmmmmmm

stab in the dark: TPS? clean connections?

dint do it today so with boost turned down, thus i sure its related to boost leak.