Guys a little update.I finally had time to change the plug boot on my stock ignition that was giving me interference.What i found out is that there was no crimp clamp over the shielding wire only heat shrink.The shield was making intermittent contact.i may have cause the shielding to be pulled loose removing the plug wire im not sure. Thing is the shielding can be pulled away from the cap quite easily so be careful.The new rcexl cap fixed all issues.