Boxter S - Uneven tickover

[Clint5397]

Hi People,
I have just joined the club after owning my Gen 2 Boxter S for 18 months.
I had a new AOS fitted when I bought it as it ran unevenly and that improved things but it still runs unevenly on tickover which you can actually feel through the seat of your pants. Also occasionly when I accelerate hard from about 2000 revs the engine doesn't respond at all and I have to back off and press the accelerator again for it to respond. Any ideas please?
The local Porsche specialist garage says there is nothing coming up on the computer to suggest a fault!
6/5/2021
I have had the car analysed today as suggested and the only thing the technician came up with is these readings which should go up and down but weren't varying much at all. Apparently they relate to sensors related to the catalytic converter and he said that he thinks they could be at fault. I can't load the photo so I am representing the screen on the analyser below:

Oxygen sensor B1 - S2 Voltage 0.410
Oxygen sensor B2 - S2 Voltage 0.415

Any thoughts anyone?

 

[CLIFFWILKINS]

Try cleaning the Maf or replace it .
Doesn't always show up on computers.
Hope you gets it sorted.

 

[Clint5397]

Thanks Cliff. Will get that looked at

 

[Motorhead]

Clint,

A faulty VarioCam solenoid can also lead to the type of problem you’re experiencing. Unless your garage has it it’s advisable to run a PIWIS or equivalent diagnostic test to confirm the source of the problem to avoid any unnecessary component swapping. Most basic OBD2 analysers won’t have sufficient diagnostic capabilities.

Jeff

 

[Clint5397]

Thanks Jeff,
I'll make sure that's covered when it goes in. Judging by what the only Porsche specialist in Peterborough said I'm guessing they don't have that equipment, might mean a main dealer trip.