as above i cheked the fuel pressure today its about 50 psi on idle, also changed the injector seals, now as the car is coming on boost well its fine up to about 15 psi then when it gets to about 20psi it starts missing really bad, recently car has had new ect sensor cap rotor plugs re gapped iq37's got a set of ht leads on the way, car drove fine this morning, little bit missy on idle now and again, just a normal cossy untill this started was thinking map sensor is faulty

 

exactly what mine does,i'll keep an eye on this,post if you solve the problem

 

phase sensor maybe???? the wires go brittle and expose the inner cable

 

problem solved now it turned out to be a split in one of the new injector seals this was sending the map sensor all over the place on boost

mattman1234 i would check the injector seals and renew them and possible the plenum or inlet headers for air leaks, let me no how you get on if your not to far away i could always meet up with you and have a look with you.

 

will have a good inspection,as i put the head back on