Hi all i have a 95 uk turbo with decat exhaust.k&n panel filter,&uprated tmic fitted an uprated fuel pump and added some of the silkolene car ran fine for a day now hesitates&splutters when floored.Fitted new plugs and gapped to 0.6mm as boost is a 1bar still the same is the fuelpump making the car run rich or the silkolene or a bloody coilpack

 

I would rule out the silkolene as it will not make it run extremely rich (Unless you put 4 Tubs in )

I would put my money on the fuel pump in conjunction with a tired fuel pressure regulator.
Did you up the Boost after the fuel pump fitment or was it at 1 bar before ??

Drop The Boost back to standard & see how this affects the hesitation, if it gets better, Then the coil packs are in Pole Position.

Dean