Extractors?

[Scheme]

Got stock everything, except pod filter, and straight pipe from middle resignator back with twin 3'' tip, nothing great at all.
Looking to get extractors as at high revs I sometimes have 'flat spots' and feels like the car is very slightly 'kangaroo/bunny hopping'...
Also would sound be any different at exhaust?

Thanks

 

[89vn_Jai]

With the flat spotting, Replace the fuel filter, Spark plugs and ignition leads.
And yes i believe extractors will make the exhaust sound better with the other exhaust mods you have.

 

[Scheme]

Cheers for that man! Yeah service her when I can get the time off work! Good to know it's just a service type thing to fix it and not replace expensive parts! Piece of mind.