Decremental Performance Lately

[JJ_MK7]

I'm new to the MK platform and seek guidance from the season and very versed owners. I have notice a change in performance lately on my 2020 MK7.5 and I'm not sure how to start digging into the cause. Turbo spooling has gotten slow (Lag), so acceleration has become not as sharp as it was.

 

[daconchslop]

Is it hot?

 

[StockblockGLI]

Fuel quality or temp changes (heat soak ?) can make a difference. Did you do anything to the car lately ?.

 

[the]

Summer months murder the stock intercooler. If it's turbo-spool exclusively I would say keep an eye on your IATs and make sure your air filter is clean.

 

[Keehs360]

Summer months murder the stock intercooler. If it's turbo-spool exclusively I would say keep an eye on your IATs and make sure your air filter is clean.

Pretty much this.

 

[westhesailor]

Summer months murder the stock intercooler. If it's turbo-spool exclusively I would say keep an eye on your IATs and make sure your air filter is clean.

What is considered "too high" as far as IATs go?

 

[seanmcd1]

Time to move up north OP.

 

[El_bigote_AJ]

What is considered "too high" as far as IATs go?

105+ seems to be where you will see and feel less timing advance from the drivers perspective.

So basically on a stock ic… 85 ambient lol

 

[GenX Retread]

If the OP is in SA as in South Africa, it's almost Winter there.

 

[dragonskiss]

I'm guessing the OP is in San Antonio. Well into the high 90s during the day, so that'll definitely spike and kill the IATs. Time for a intercooler upgrade!

 

[daconchslop]

Pretty sure OP is Stg2 with stock IC.

 

[Keehs360]

Pretty sure OP is Stg2 with stock IC.

Oh wow. That’s fucked

 

[daconchslop]

That’s what his ECU said too

 

[Daks]

Oh wow. That’s fucked

 

[MonkeyMD]

I have a larger intercooler and even with that, when got to 80°, could feel a power loss that became more pronounced as it went up to 95°