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What did you do to your mk7 today?

DSC808

Autocross Champion
Location
HI State
Car(s)
2016 GTI SE MT
How’s the repair holding up?
Great. Checked a few days ago and pan is clean, no signs of oil seepage.
 
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swcrow

Autocross Champion
Location
Virginia
Car(s)
7.5 GTI

mrmatto

Autocross Champion
Location
Jacksonville, FL
Car(s)
2024 GTI DSG
Fun autocross event today. Feeling confident about my driving, but I can tell the suspension is wearing. Clunks, and more creaks and squeaks after every time lol.
A3593108-A5FD-4D51-A53B-DC0742D7F3A6.jpeg
 
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Acadia18

Autocross Champion
Location
The Greater Boston Metropolitan Area
Car(s)
2019 Golf R
I mean, I learned that a car that with a daily driver, It’s impossible to not get swirls so rock on.

I bought the car with 65k miles and 5 years of use on it. The paint was far from perfect when I got it. I already take better care of my car than 99% of cars on the road, so I don't think an occasional spin through a paint murder tunnel will do much.
 

CaptainRatty

Autocross Champion
Location
Winston-Salem, NC
Car(s)
MK7 GTI
Borescoped the cylinders and here's what I found. What am I looking at on the tops of the pistons in 1 and 2? Wish I could have gotten better photos and video, but I don't have the dopey adapter.
I did a compression test and found 180-185 across the board. Leak down test passed as well. At this point, I’ve replaced the injectors, HPFP and did a carbon cleaning. Also swapped the plugs to the one step colder Denso non-projected.

According to @Hoon, rail pressure drops on is38 GTI pump gas tunes is common. The HPFP can’t keep up but there’s enough time for the injectors to spray the requisite fuel and as long as it recovers in the upper RPM, it’s fine.

Looking in cylinder one now, it’s clean. There is none of the build up that was there before and no signs of further detonation on the piston. I stuck a piece of towel down there when the piston was TDC to check for oil in the cylinder and it was dry as a bone.

So, I’ve been driving and spirited at times and will keep an eye on it. I guess there’s no way to be sure what caused the detonation in Cyl one. It could have been a weak/dirty injector, weak HPFP, or truly needed a colder plug.

The last piece of the fuel system I haven’t touched is the LPFP. I’m not opposed to replacing it, but unless I see further evidence in Cyl one indicating the new parts didn’t solve anything, I’m inclined to think this was not a fuel delivery issue based on what Matt said about the is38 GTI tunes.

If there are any flaws in my logic, let me know.
 
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Autobahn

Autocross Champion
Location
Huntington Beach, CA
Car(s)
'18 Golf R
Installed some rear RacingLine (Goodrige) brake lines and bleed the system with Endless RF-650 fluid. Tried the Motive Power Bleeder for the first time using the “dry” method, went well, did a once around using the old pump and hold method after, got a little more air out. Pedal engages very high in the first 1/8 of travel!

Mounted my track wheels, bedded in my Race Technologies RE-10 front race pads, and filled up with E85 🌽

Mostly prepped for Auto Club Speedway next weekend, just need to wash the car and pack during the week.
 

swcrow

Autocross Champion
Location
Virginia
Car(s)
7.5 GTI
I did a compression test and found 180-185 across the board. Leak down test passed as well. At this point, I’ve replaced the injectors, HPFP and did a carbon cleaning. Also swapped the plugs to the one step colder Denso non-projected.

According to @Hoon, rail pressure drops on is38 GTI pump gas tunes is common. The HPFP can’t keep up but there’s enough time for the injectors to spray the requisite fuel and as long as it recovers in the upper RPM, it’s fine.

Looking in cylinder one now, it’s clean. There is none of the build up that was there before and no signs of further detonation on the piston. I stuck a piece of towel down there when the piston was TDC to check for oil in the cylinder and it was dry as a bone.

So, I’ve been driving and spirited at times and will keep an eye on it. I guess there’s no way to be sure what caused the detonation in Cyl one. It could have been a weak/dirty injector, weak HPFP, or truly needed a colder plug.

The last piece of the fuel system I haven’t touched is the LPFP. I’m not opposed to replacing it, but unless I see further evidence in Cyl one indicating the new parts didn’t solve anything, I’m inclined to think this was not a fuel delivery issue based on what Matt said about the is38 GTI tunes.

If there are any flaws in my logic, let me know.
Yeah I never got around to scoping mine for you....apologize.....just got caught up in busyness around the house. Glad they were clean though.
 

EpicTech

Autocross Champion
Location
Houston
Car(s)
MK7 GTI 6sp w/PP
Sort of over the weekend kinda thing but did some prep work for OS tuning. Got the app installed and finally connected to dongle, and then did some pulls for logging. Sent them to Diggs who has already sent a base file for me. I will flash that after work today. Also went to car show yesterday and won best Euro.
 

EpicTech

Autocross Champion
Location
Houston
Car(s)
MK7 GTI 6sp w/PP
Throwing in a pic from above mentioned event.
Sam_2022_LAStateFair.PNG
 

Wastegate13

Autocross Champion
Location
SoFla
Put a gallon of 93 in it so I could make it to work. E85 station is by work and I’ve been on vacation. Brought me down to e50. Hoping filling up tonight will bring me back in the 70s.
 
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