when on the motorway or any length of road really where u can get speed up for a bit, if u have it in 5th or 4th sumtimes n accelorate it pulls then it will stop rev's will go to nuthin soon as u let off it dumps then u can go again ... i been told its my boot limit or summot u reach it then it cuts it.... well blew head gasket n had it replaced for an uprated 1 think it was the grp N 1. appatently the car has been set pu rite so im told but it is slower now n it does that boost thing a hell of a lot more.... but now when it does it u get a big bang from the zorst never did it last time. lol.
can any1 shed sum light on this for me, got cam, intercooler, full zorst n filter maybe chipped but im not sure.... sorry as i have said in other posts i dont know full spec of engine it was mcpikies. cheers all, Maroo.