What a contrast of driving styles, having read the previous posts.
The special appeal of my 2.5 Omega Elite is its comfort and smoothness, a wonderful cruiser. I never thrash it, but seek best economy. Typical runs are 5-10 miles, sometimes 20 miles to hospital appointments, occasionally further, rarely going over 2500 revs, sometimes cruising at 60-70 mph but not accelerating hard. This profile may seem slightly unadventurous but hopefully will result in extended car life compared to a more stressed style. Am I wrong?
I used to get 28mpg average, with 33-35mpg on runs. Imagine my distress now with these problems, getting only 15-18mpg .. severe depression !!!
However I accept that a good fast run is overdue, maybe using kickdown or lockdown for higher revs, to help burn off deposits in the cats and Lambda sensors, and hopefully restore normal fuel consumption. Going out soon.
Will get some help to fit the new SAI hose ASAP then change the rear exhaust box. Any other suggestions please?