VT is really sluggish at take off

[JakeysVT]

My VT commodore is very sluggish at take off, i put my foot down makes alotta noise but doesnt go anywhere ? will the mods cause this ? 2.5" muffler system, pod filter and LSD. i have replaced the fuel filter made a little difference but not very noticeable possible fuel pump ?
Help is much appreciated
Thanks

[JSTCOZ]

those mods would not have made any difference in decrease of acceleration. Get a service, then see how it goes. Might need the plugs changed. How quick is it accelerating? Maybe your just getting used to the speed lol

[JakeysVT]

haha maybe, the plugs are brand new as are the leads, accelerating is ok ones it gets to about 40kmh it keeps on climbing lol but from a stand still its slow as