Right here goes.....

I have been restoring my fiesta over this year and yesterday got it to the point where we were ready to take her out for a little test drive.....

since i last drove it we have done the following mods:

1.60mm front mount intercooler
2.t3 conversion
3. fitted some beige injectors

the car already has a 165 chip fitted (i beleive?)
cone filter
stainless exhaust

Now the problem im getting is only what i can describe as a hesitation/kangarooing/missfire, this happens when u rev it, it misses at 1000rpm, but as you rev it more it clears, now as said we took it round the industrial estate yesterday, and it does the hesitating thing constanty, before you even get anywhere near boost, i didnt take it too near to boosting as i could obviously see something wasnt right.

Now the car didnt do this when we took it off the road last year, so im thinking this could be 3 things

1.the beige injectors?
2.the fuel filter? as it hasnt been changed since i got the car and looks rather old.
3. my leads?

Anyone had this experience? as its booked for its mot next week and im starting to panic as always your help is always apprieciated