Hi Guys,
Tried all sorts this weekend, I have checked for Vacuum leaks but cannot identify any. I have now replaced MAF Sensory, the Throttle Pedal Assembly. No Faults codes are showing or stored at all.

The car turns over fine, idles at around 500 (give or take a bit). When I accelerate in neutral there doesnt seem to be any flat spots. However when im actually driving the car, it lacks power and doesnt pick up quickly at all, its as if it misses later on up the revs and cuts power for a split second, and it sounds a lot lot more whiney that it ever has been when running normal.

I think I will buy another Throttle Body or would you guys think this could be something like what other users have had problems with:

Electrical Transmission Plate
Idler Pulley
Camshaft Sensor
Fuel Pressure
Serpentine Belt

Do any of the above sound like they could be at fault?

The machinic who it has been going back to says it isnt 'advancing my timing'


Cheers for the help, its just starting to stress me quite a bit now