Which plugs are best?
I have a 1.8 16v zetec turbo running T25 turbo and about 190bhp. When I bought the car, I replaced the plugs with NGK platinums for a standard 1.8 which I had been told were correct but I have a stutter on boost and I'm just wondering if the car is able to ignite the mixture correctly or if the spark is getting blown out. Gaps are about 0.7mm iirc
Should I be running FRS plugs or any others, or are the plugs I have fine?