As per the title really guys, when I'm driving hard occasionally I get a slight dip/hesitation at around 5,000 rpm then it clears and continues to pull, any ideas? It's just been serviced including plugs etc, maf has been replaced and pcv has been deleted! Could it be the beginning of the end for my coil packs? It doesn't bring any faults up when scanned! I will say though my rocker breather pipe is soft, and also the lower pipe from the pcv hockey puck is soft also (replacements are on order!) but any ideas or suggestions?