My car:
1986 N/A Europe model with less emission control .

I have made full tune up:

New filters (oil, fuel, air - sport)
Fuel system cleaning - Car is runing 2 hours on cleaning fluid by machine
New Ngk platinium spark plugs
New Ngk spark plug wires
New water sensor
New thermostat
New fuel pressure regulator
New oil
New cat back (Inox made by professiona)
TPS adjustment with bulbs (factory manual)

But still my car is runing to rich i get cca 10,5-11 MPG (checked)

If i go over 6.5-7k when car is not waremd up completyl (not cold -please i have a hart) and deacelarate there is smoke (greyish, blue) behind me but not all the time (once and than not more or less). Also my idle is a litle bit jumping but not for more than 30-50 rpm, Also when i deacelerate my exhaust gos pambambam and it back fires a lot.

Please what can i do further sinc i am geting out of patient.

 

What about your pulsation dampener. Try checking under the UIM and see if you see any leaking.