Excessive vibration in steering wheel under boost at ~2500 RPM

[randomguy15]

Afternoon all, I have a 2016 S3 with an 034 motorsports stage 1 ECU and TCU tune. More recently I was driving a bit more aggressively than normal and I found that if I hit WOT in a higher gear (5th or 6th) under 2k RPM, once I hit boost the steering wheel would vibrate at around 2500 RPM, very briefly albeit. It doesn't seem to be wheel speed dependant, it does the same thing in lower gears under similar circumstances, is this normal given the higher boost from the tune? It doesn't vibrate at all past ~2600 RPM so a very narrow window but it feels as if something is out of balance. The car is completely stock, no suspension work or anything notable. I am running continental 255 35 R19's but it doesn't seem to be wheel speed based anyway. Car has been well maintained since my ownership, oil change at 5k on the dot, DSG service less than 10k previously and haldex within 10k as well.

[MikTip]

Gearbox mount bad.

No mods? Might be the sub frame shifted which will cause changes in the steering toe which will cause vibrations of rotating wheels and tires.

Subframe locking kit highly recommended!

https://www.034motorsport.com/mqb-fr...s3-tt-tts.html

[CXSnail]

You shouldn't be boosting any DI turbo charged engine in that low of an RPM range, as youre in LSPi territory. Let the trans downshift on its own in these circumstances, don't force the gear. How old are your spark plugs and what gap were they set to upon installation?

[randomguy15]

Im running NGK RS7 plugs, I didn't check the gap when I put them in but I only have around 3k on these plugs. To be clear, Im not deliberately driving around in top gear WOT all the time, I just happened to notice it once and wasn't sure if it was a potential issue.