Ive noticed that ~2000 rpm surge is more pronounced with the ph4480's over stock, The power below this mark has always been weak and I cant really feel a change.
But now if I stall the car up a little the launch is alot harder.

Pacemaker are a good designed extractor made with the lastest tooling. Every one has different opinions on this subject. Diphillippo has tacky welds on the inside of their extractors. I found the standed pacemakers mainly good at fuel savings on the freeway and a little bit of pick up when you floor it. If anything niose is the thing extractors a good at and a placibo affect to the mind. A few Kw's at the rear wheels won't make the car a fire breathing drag machine.

ghiaman