These are our go to plugs for our E36 and E46 platform's (excluding s54 motors).
We offer 5 variants of plugs that we have tested hundreds of times over. These plugs alone will offer better idle, better fuel economy, and offer higher performance than any other plug on the market for their prescribed power level.
1. Our base plug is a stock replacement NGK Race plug.
2. Our next plug up is good for Extreme Na builds into low boost applications. Up to 400BHP
3. This is our low to medium boost plug race spec plug. Good for up to 600BHP and 15psi
4. This is our high boost plug good for 600-900BHP and up to 30psi
5. This is our highest standard offering plug, only to be used in builds consistently pushing 30+ Psi and 850BHP++