missfireing

[codyhoover]

my engine:K8, prm intake w/ custom ram air, NGK wires, beru silver plugs, fuel preasure mod, TB coolant bypass, custom/magnaflow catback.<P>my problem: at 5000rpm power drops out then comes back at 6500. i thought it was missfireing at first but now i'm not to sure because it still runs smooth. it doesnt have the jumpy power surges that misfireing causes.<P>tried new plugs, distributor cap. the wires are not even 6 months old. didnt fix anything.<P>Any ideas?

[white fish]

check if theres any cracks in the wires <BR>check and see if the VIRS are working<BR>gap on plugs