hi today i drove my rs today, and it seems really slugish on pick-up, feels like the power just gone,,but its intermediate it comes back after the revs build up??i hav a friend who says it cud be catalytic con, or a block in exhaust, does anyone have a opinion, thanks in advance!!
cheers ash.

 

idle ok? try disconnecting the maf sensor of the inlet, see if this changes anything. Blocked cat would starve the revs to around 3k.

 

I would start with the MAF

 

Could just be the plugs and leads.

 

i would after checking the Maf and the coil pack.