[C.B]

I agree I can see the B9 needing a bigger blower to reach B8 stage 2 levels.

Any of you stage 2 guys experiencing heat soak? When I have pushed a car that far past stock before it soon became a problem. I notice there are a few cooling kits on the market now that claim it only takes a couple of dyno runs on stage 2 before they see major power loss.

 

[arad85]

I have the APR CPSv2. In last week's heat, I was doing my first pull for a while as I overtook a car. At 5.5k rpm and 118km/h, outside air was 32deg C. IAT was 39 deg C. (don't ask me how I know, I just do ) I thought that was pretty good and I can't see temps being a real issue for me now. Certainly for a daily, I don't think you are going to be limited by the temps. unless you have that perfect road where you can be pushing every 5 seconds.

I'm with Dippy too. Bigger blower with bigger lag is where it will be for the B9 (unless someone can retro a supercharger!). Very happy with the B8.5 stage 2...

 

[Dippy]

C.B, I guess I should have blasted my car last week to see how it fared (I have stock cooling) but I didn't. Part of me doesn't want to find out because if it overheats then I'll want to go for cooler upgrade and I'll also want to use that as an excuse to increase the size of my pulley but we don't yet know if the CREC supercharger clutch can take it. We're waiting for APR to solve that problem...

 

[S5_6speed]

I agree I can see the B9 needing a bigger blower to reach B8 stage 2 levels.

Any of you stage 2 guys experiencing heat soak? When I have pushed a car that far past stock before it soon became a problem. I notice there are a few cooling kits on the market now that claim it only takes a couple of dyno runs on stage 2 before they see major power loss.

I have the APR Stage II on my 2013 S5. After I got the crank pulley (179 mm) installed, we did 5 dyno runs and the car sat for 15 minutes. Driving home, I was getting on it and it went into EPC limp mode. I dropped my nephew off at his place and cycled the ignition and everything was fine.

I'm not sure if it was heat related or not. It was probably around 60F inside the shop. It hasn't happened since and I'm not easy on the car, so for an everyday driver, stock cooling should be fine (I live in Massachusetts, so it's not Houston or Phoenix hot).