Hi,

I have a '92 Saphire on K plate which has just had the head refurbished. The car is totally standard apart from a K+N panel filter. I plan to put greens etc to go stage three but want to make sure it goes allright before I do that.

My problem is it has a misfire or a hesitancy off boost but is OK when boosting. Does anyone know what could be causing it? The car has had new plugs, oil and filter recently.

Anyone give me any ideas. Can the fault codes be read easily or does it need to be done with a proper reader?

Any help appreciated.

Graham