What condition is your electrical system e.g. Alternator output as RB's can suffer voltage drop at mid to high rpm's
type of plugs can make a difference some are better than others if it is a voltage drop.
Check out ADVANCE alternators 150amp as a solution on www.rhdjapan.com they are about $950.00 to $980.00 plus freight.
where does your cold air induction feed from e.g. bonnet, front bar, behind headlight, or intake catch above radiator?
Heat shield between pod filters and engine can help create a cool zone for air pick up.