before anyone says it yes im a *****

went to give my soleniod a clean to sort some boosting problems, went to give it a try to see if it was boosting ok and it shot up to 1.6bar

later realised not paying attention that the two hoses at them bottom connected wrong way..... anways connected properly but no the car is missing my mate said its possible could of melted a spark plug as there only standard.

so im upgrading the plugs for some platinum ones if this doesnt cure it does anyone have a idea what else it could be.

my car is my93 import wrx , k and n induction and hks 3" back box.