Audi S4 Acceleration Bogging down

[APL 3.0TDi]

Hi guys

I have a bit of an odd one.

My 2010 S4 (remapped) bogs down under partial acceleration when changing gear at around 4500-5000rpm.

It happens in all gears. Basically, when accelerating at around 50-70% throttle, if the gearbox changes up early, it's like the car bogs down quite badly for around half a second.

It is not the normal DSG "kick" you get, it is different. It only happens when changing gear between 4500-5000rpm. The changes are smooth in all other circumstances.

Has anyone experienced anything similar?

I am taking back into AMD Tuning on Thursday for them to have a look, but any insight would be appreciated.

Other mods include a custom center resonator delete X pipe and a forge silicone intake hose.
I also have a solid transmission insert.

Thanks all

Antony

 

[Dippy]

Are you seeing engine revs blip when the gears change in this circumstance?

 

[APL 3.0TDi]

Hi Dippy

The best way to describe it is when the gear change happens, the revs drop to pick up the higher gear and the car looses a lot of power, like it bogs down.

 

[Suths]

Check your air filter first. I had a bogging issue and it was due to a dirty filter.
Other things to check include cats and fuelling components like hpfp or injectors. Failing cats exhibit bogging sensation and lack of power at higher rpms.
Do you have a way of logging the car? If so, that will really help as you’ll be able to share info on how the cars running

 

[Suths]

Oh and it could also be a slipping supercharger belt

 

[APL 3.0TDi]

Thanks Suths

It's all sorted now

Took it back to the company that mapped it and they fixed it.

 

[Eric_RS6]

I presume it was a software issue then?