hi peeps, my s2 has recently just started popping and banging when it comes on to boost recently, the car also kinda jerks at the same time.

Any ideas as what could be the problem with her? shes stage 1 tuned i.e chip, bout 14psi, induction kit, s/s pipe, samcos etc.

someone said plug gaps, what should they be? as i always use ngk 705's i thought they were already pre-gapped from factory?

hope u can help peeps

cheers