FROSTYmk7.5
Go Kart Newbie
- Location
- Denver Colorado
- Car(s)
- mk7.5 golf gti 6MT
i bought a 2019 gti and recently I notice when at WOT there is a slight compressor surge and it feels like there is a loss of power as well. I am assuming I have a boost leak, however, I don't know why there would be turbo flutter at WOT? I am new to modding, and just looking to learn more. Last night I took off my turbo inlet pipe, turbo inlet elbow, and my BOV. I didn't see anything wrong with the O rings on the BOV, and everything looked fine with all of the intake components. I am going swap back to the OEM diverter valve, however, I am about out of answers after that. If anyone has an answer to this or can educate me on this subject it would be much appreciated. I also do not think it could be the actual wastegate spring in the turbo as the car is on a completely stock tune (no piggyback). Is there any way this could be related to the turbo inlet elbow not sealing all the way? The car is stock tune as I said, has 4,200 miles, and the only mods I've done so far are:
Catted downpipe
Resonator delete
Turbosmart Kompact BOV
OEM Audi short shifter
high flow drop in air filter (K&N)
High flow turbo inlet pipe
High flow turbo inlet elbow
and other random cosmetic mods
UPDATE: the surge got worse, And I had a loud spooling noise that sounded like it was coming from the DV (it was a very unique spool sound not just intake noise. not to mention its a stock intake. So I decided to take my downpipe off today. The wastegate is loose, and I assume staying open constantly. Along with that I found a little shaft play in the compressor wheel... I have been on a stock tune the whole time and car is just nearing 6,800 miles
Also scanned the car
p226100 : turbo boost pressure not detected mechanically
U041600 : Invalid data received from vehicle dynamics control
The car is going into the dealer on Tuesday, most likely getting. a new turbo under warranty.
[UPDATE]: Turbo was replaced under warranty a couple months back. no issues whatsoever.
Catted downpipe
Resonator delete
Turbosmart Kompact BOV
OEM Audi short shifter
high flow drop in air filter (K&N)
High flow turbo inlet pipe
High flow turbo inlet elbow
and other random cosmetic mods
UPDATE: the surge got worse, And I had a loud spooling noise that sounded like it was coming from the DV (it was a very unique spool sound not just intake noise. not to mention its a stock intake. So I decided to take my downpipe off today. The wastegate is loose, and I assume staying open constantly. Along with that I found a little shaft play in the compressor wheel... I have been on a stock tune the whole time and car is just nearing 6,800 miles
Also scanned the car
p226100 : turbo boost pressure not detected mechanically
U041600 : Invalid data received from vehicle dynamics control
The car is going into the dealer on Tuesday, most likely getting. a new turbo under warranty.
[UPDATE]: Turbo was replaced under warranty a couple months back. no issues whatsoever.
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