All s2's where American 2001 models with Liquid Grey Metallic Paint and
Dark Charcoal (black) interior with a unique (to the S2) pattern on the
seat and chrome exhaust tip.

The big enhancemnt was that S2's came with a different suspension
package.
In europe at that time focus's where sold with basically 3 suspension
packages from Ford. 'Soft', 'Medium' and 'Hard'

All american FOcuses where equipped to what is equivelant to the
European 'soft' suspension package. The S2 came with what basically
equals the 'medium' european suspension packege. From underneath the
car you can see S2 labels on various suspension pieces.

I never drove an SVT version, but I have driven a couple regular
focuses and mine does have a firmer more controlled feel on the road.

Anyways, friday I drove home from work fine, like car never had a
problem, saturday I drove 70 miles round trip to pick up a fuel pump,
car ran like new, no problems.

So saturday I did the following:
Replace PCV valve, replace fuel filter, changed oil, cleaned Air filter
(I have CAI), clean MAF and EGR valve, then added some fuel system
cleaner to tank. Car ran wonderfully all day saturday. (did not change
fuel pump as it was runnning great)

Sunday, I filled  tank and car started running crappy again. (it runs
alot better than last week but car refuses to idle- it will just stall
out if I dont keep it revved above 1000rpm, also minor stumbling on
occasion)
I realized car for last 2 days was around 1/3 tank or less.

So I am assuimg that this weekend like it or not I am dropping tank and
changing pump. But from what I whave read and what seems obvious, fuel
pump issues usually get worse when tank gets lower, I seem to have
opposite. I will know for sure by friday if my car runs better as week
goes on (and tank gets lower).

Anyone have any thoughts? Since I am dropping tank (what a pain in the
a.s that is going to be), I want to clean it out, any ideas or tips on
what works best to remove any residue or smudge that might be there?