flat spot when revving

[Matt e]

Had this problem a few months now, when you press down the accelerator it seems to lag a bit before the engine revs. And some when you pull away it sort struggles, almost like its miss firing before it gets back to normal. it doesn't matter if the engine hot or cold it always seems to have the same problem.

the things ive looked at so far are, cleaning the tdc sensor and changing the throttle body, ive also had it on diagnostics but it doesn't show any errors

what could it be? lambda, injectors

 

[Dan@M.A.D]

Just had the same with mine, Needed new coilpack, leads & an 02 sensor.

Might be something like a lambda sensor etc

 

[Andyk1801]

Mine went a bit like that straight after the decat was fitted. Nothing to drastic just a bit flat bottom end of the rev range.

 

[Matt e]

ive had a decat fitted but ive had it on foe the last 3 years with no problem, put the cat back last month for the mot and its still the same

was thinking of trying a new lambda sensor