recently fitted a blitz sus induction kit, ever since torque has improved but if i put my foot to the floor, as the car is about too come on boost @ about 4000rpm the car jolts foward as if it has lost all boost,

also when car gets to about 80 mph it wont go much faster unless i apply gentle throttle and it sounds like the dump valve is constantly open as i can hear a loud rush of air from under the bonnet and will only go to about 90mph

any help much appreciated

p.s. cant put old panel filter on as i think some1 threw it out

cheers

 

check all pipes for leaks

 

Go and buy a good panel filter and bin the induction, kit unless you have a remap with it it will make it run worse mate.

 

i am having car remapped in a few weeks so will take it easy from now on, also i will check for boost leaks....

cheers