What next ~ flat spots in acceleration

[Max Headroom]

I have changed the MAF, crank sensor, cam sensor and ECU on my Volvo T5 and it still runs flat in a couple of spots when accelerating and is sometimes hesitant when waiting at a junction, it will not idle and the throttle needs a blip to keep it going. After hard acceleration it "pops and farts" so I am guessing O2 sensor? Any suggestions?

[t5 pete]

Have you cheacked your intercooler pipes

[Max Headroom]

Checked them as well as I can, took off and cleaned the IAC

[woz]

Get it tuned up by a proper diagnostics outfit. Either Hometune or similar where they come to you with a well equiped van, or ask around locally for a good place. I know of a couple in Bristol, and several I would NOT use. Or you are looking at an RR session at HLM and that will will be money well spent, not only to cure the problem but restore a level of performance you prob never knew you had. And better mpg to help pay for it all. You could just ring Hamish and have a chat he may point you in the rioght direction.
W