Ignition Coils?

[BrodyS]

I am looking to buy a JB4 and understand that I need to buy new spark plugs. However, do I need to replace the ignition coils as well? My buddy continues to question why I would only need to upgrade the spark plugs rather than the coils, as well.

 

[sym]

No coils, just the plugs.

Tighter gap (0.022ish vs 0.032 stock) prevents spark blowout and one step colder plugs help prevent knock. Both are of concern when running higher boost with the JB4.

 

[Slip_Angle]

You can re-gap the stock plugs as well. They are good quality. I did .024 and they are looking great.