Hi my st runs ok when cold but when it gets warms and i put my foot down it holds back and it sounds like it firing on 3 but it will rev ok at stand still it seems to be happening under presure?changed coil pack but if i unplug yhe MAF sensor it ok but slugish will this cause this problem?and iam only getting 1 code for rear lambda sensor can someone help please

 

anyone??????

 

bump................

 

problem solved with a set of plugs and leads happy days