I haven't noticed a change like you've described.
Sent from my iPhone using Tapatalk
Has anyone noticed that their turbo surge is coming on at higher rpms than it did in the past? The surge in power from the turbo kicking in came in around 2500-2750 rpm before, now it is around 3500rpm. The one thing i did notice is the sound of rattling before the turbo kicks in, and then a thwump noise(not real loud, like the sound of a vacuum closing) and then the car goes. Past experience has me leaning towards wastgate or actuator not closing tightly(the rttle and delay in power) then when it does(thwump).
Does anyone know where the wastegate is located on the engine. I would like to see if the actuator arm is loose or if there is any play in it.
Anyone have any ideas ?
No. And if you watch the little graphic boost gauge (and seat of the pants dyno), I'd say I can already feel boost as low as 2K rpms. That's one of the things I love about turbo motors (and this one is the best example yet I've driven) is the wall of torque that starts lowdown and stays pretty flat until near redline.
2012 Porsche Carrera 991
In 15.5k miles of ownership I have not noticed this. Definitely sounds like something is wrong.
2012 Audi TT-RS
Options: Suzuka Gray, Tech Package, Sport Exhaust Titanium Package, Heated Seats, CF Mirrors
Mods: Scorpion Secondary Cat Delete Pipes, 034 Downpipe, 034 Rear Sway Bar and End Links, United Motorsport Stage 2, Escort Passport 9500ix (Hardwired)
My mk6 GTi does this a bit (second car)... I'd guess there's probably something wrong with the wastegate actuator or something.
Bet it's not closing properly - hence the issue with coming on boost slower.
2010 Audi TTRS (6spd)
Options - 19's titanium blades, Mag Ride, RS Seats, Bose, Extended Leather, AMI, SatNav, Xenons
Mods - Catback Milltek Exhaust, Wagner Intercooler, Self tuned - 343awhp
I had this problem with my BMW and it was wastegates. I am fairly certain it is the same thing. There is a rattle as i accelerate(the wastgate not sealing) then the rattle stops and that is when the power comes on. From what i understand the actuator arms are welded so they are not adjustable which means if there is a problem it would have to be replaced instead of adjusted.
Tryng to make a video of the noise and trying to convince the dealership that it is not a normal noise.