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APR DTR6054 on track - power loss

Shmohawk

Ready to race!
Location
Delafield WI
Car(s)
2021 Jetta GLI
There's no ducting kits, you have to get creative with sheet metal
Ok, thanks. You don't think a front-mounted intercooler that is in direct airflow and away from the radiator and oil cooler and A/C stuff will help and/or solve the issue?
 

jay745

What Would Glenn Danzig Do
Location
Slightly Outside Chicago
Car(s)
Mk6 racecar, Tacoma
I think I am fighting heat soak - don't you think a front-mounted intercooler that is in direct airflow and away from the radiator and oil cooler will help?
Front mount will perform worse. They rob air from the radiator which is more important than your iat
 

jay745

What Would Glenn Danzig Do
Location
Slightly Outside Chicago
Car(s)
Mk6 racecar, Tacoma
ECS has an upgraded radiator that they claim flows 45% more than the stock one - does that make sense?
You could, but without ducting it's not going to do much. Air wants to take the path of least resistance. If you don't force the air through the coolers the air just goes around them.
 

scrllock

Autocross Champion
Location
MI
ECS has an upgraded radiator that they claim flows 45% more than the stock one - does that make sense?
airflow through the coolers matters a lot, especially if you're trying to evacuate it from the top with hood venting.
how does your condenser look? seen those get extremely banged up which can definitely impede airflow.

https://www.golfmk7.com/forums/inde...ding-an-oil-cooler.426885/page-7#post-7989154

Look at @Redslaya 's thread, he had significant results by fixing the ducting and moving the oil cooler away from the passenger side.
 

19birel

Autocross Champion
Location
Pittsburgh
Car(s)
MK7.5 - MK4 - B8.5
To expand on the case for the tune being less than ideal- It's an off the shelf file, designed for a stock dp, meant to produce high power. The result is that, likely to protect the stock dp from high EGTs amongst other things, APR has a lot of protections in place that make for inconsistent performance, even on the street. They also tend to tune boost heavy and timing conservative too which isn't ideal for heat management either.

Options- I self tuned mine using simos tools, but if you don't want to DIY it there are tuners like Russell Road & Racing and GLS Performance that can make you a tune using simos allowing you to utilize the advanced datalogging features, map switching etc. that simos offers. The datalogging makes determining where any other pain points are that much easier too.

If you want to take the path more commonly traveled, EQT has tuned DTRs and in general has a great reputation. They can tune you via a Cobb Access port. Still a solid option, but I can't recommend the simos route enough personally.

Either way, switching tunes will net you more consistent performance and would be my next step if I were in your spot. There are likely improvements to be had with hardware as well, but the tune will likely make the biggest difference and give you a good basis from which to refine
 

GoatAutomotive

Autocross Champion
Location
Georgetown, TX
Car(s)
2017 VW GTI SE, DSG
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tigeo

Autocross Champion
The oil cooler in that pos. can't be helping with a setup that is already making more heat (APR larger trubo tune). Oil temps are not related. Intake air temps to the turbo/cold side aren't related. The APR IC is fine and should return IAT to ambient deltas on track in the 20-30 deg F range which is reasonable. I'd say there are better tunes out there for a car getting tracked vs. the APR tune which seems to be more street-orientated.
 
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