So my dad is really hell bent on getting as much power out of our 318ti autocross car so we’re going to “fogg” our airbox which just means adding another hole for air to enter. On our cars this has actually been shown to add about 3-4HP which is nice. He’s also been talking our mechanic who swears by Pulstar spark plugs and apparently thats enough for my dad. Now Im extremely skeptical that there’s anything to be gained with these spark plugs but the ones that are in there now are ancient and need to replaced anyway so I suppose theres no real harm in trying them for a few extra bucks.