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Hey everybody , I was hoping somebody can help me out here . First let me establish a baseline. C63 coupe 3 years old first owner no mods for the first 3 years roughly 25k miles .
I recently had catless down pipes installed and the car was tuned via obd shortly after. (Thursday last week) Stage 2. After pushing the car for a few hours and really getting to like the burble etc. I felt that the car was satisfactory and went to bed that night. Woke up next day ready to drive , went and hit some canyons and pushed the car a little bit, I wouldn’t say exsessive pushing by no means at all, just standard hard driving (if that can even be measured). About 2 hours later I hear a blow off valve sound and car goes limp. After getting home and removing the new tune, I open the hood of the car to see a melted diverter valve hose specifically the PVC elbow that is attached to the diverter valve itself.
car continued to act strange without the tune, of course now it has a leak from the diverter valve . fast forward totoday (car hasn’t been able to go over 4K rpm without limp mode engaging for 4 days) I’ve stopped driving it and started inspecting the intake that melted slightly (It also melted the harness above the diverter valves a little bit) as well as inspecting the diverter valve itself upon removal of the intake I discover a destroyed turbo turbine and a bunch melted plastic fragments
a. Stuck to the walls of the turbo
b. Loose and inside the intake.
Melted plastic caked around turbine / grinded propeller
was curious if anybody has any idea what happened what could cause the turbo to get so hot it melted the diverter?
car has also thrown a code but I reset thinking it was the o2 sensor may have been a misfire as the car is definitely idleing very rough.
I take the car I. On Thursday for a diagnosis, I’m worried that the catless downpipes will give the service department ammunition to use against me and void my warranty . But hey thats a discussion for Friday haha. Thanks ahead of time
does anyone know where I can buy the oem diverter valve and hose I can’t seem to find the part anywhere
I just had to have my LH diverter valve replaced. The part number I was given was A0001532859.
I ended up just replacing both diverter valves with an aftermarket billet version from GFB (GFBT9388) after a bit of research. Sounds like OEM is a common failure point, so I figured just replace both and be done with it.
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