Supercharged vs NA at the track Part 2. (Results are shocking)

[bigjae1976]

Unless you are shifting early, I don't see how you're engine isn't heat soaked. I used shift my 330 early as an intermediate driver. It ran hard all day long. When I got into the advanced run group, I keep that tach pinned on the redline. I have an heavily upgraded cooling system, w/a injection, heat exchanger, push and pull fan. I'd get heat soak by the second session.

I have temp issues with my m3 stock. The DCT starts getting slow and my redline pulls. I don't see how adding an inter cooler with a 50% bump in power won't heat soak the intake charge?

[Longboarder]

Originally Posted by bigjae1976

Unless you are shifting early, I don't see how you're engine isn't heat soaked. I used shift my 330 early as an intermediate driver. It ran hard all day long. When I got into the advanced run group, I keep that tach pinned on the redline. I have an heavily upgraded cooling system, w/a injection, heat exchanger, push and pull fan. I'd get heat soak by the second session.

I have temp issues with my m3 stock. The DCT starts getting slow and my redline pulls. I don't see how adding an inter cooler with a 50% bump in power won't heat soak the intake charge?

I've done 3 track sessions (one on a very low speed track and two on a high speed track) with my M3 and went all out every time. Even did a 15 minute straight drift session on the first track day...the first 10 being with a professional drifter who just scorched my car on a crazy 8 skid pad. Did a bit over 100 laps in all which isn't all that much. However did a couple sessions of 15 or more laps and other than frying the stock brakes, the car performed flawlessly with oil temps in check. Temps were cool out so that could be a important factor so I will keep my eye on oil temps as it gets warmer out. Maybe this ESS kit is just over-enginerred.

[bigjae1976]

Originally Posted by Longboarder

I've done 3 track sessions (one on a very low speed track and two on a high speed track) with my M3 and went all out every time. Even did a 15 minute straight drift session on the first track day...the first 10 being with a professional drifter who just scorched my car on a crazy 8 skid pad. Did a bit over 100 laps in all which isn't all that much. However did a couple sessions of 15 or more laps and other than frying the stock brakes, the car performed flawlessly with oil temps in check. Temps were cool out so that could be a important factor so I will keep my eye on oil temps as it gets warmer out. Maybe this ESS kit is just over-enginerred.

Here in Texas, I track in 105 degree temps, sometimes on track temps are 110+ so this may not apply for folks in cooler climates.

But you are basically stacking coolers in front of coolers. There's no added volume of air so your radiator is now seeing air heated up by the intercooler. There's just not enough cooling on a stock motor. More HP = more heat. I've learned this. Many FI companies advertise their kits being used on the track. That's great and it works for them. I'd discuss with the company first before purchasing and make sure they understand the service demands the car will see. What I was told on my E46 330 kit is that it wasn't not designed for heavy track usage. For me that's a total game changer.

From my experience and looking at cars...you don't see a lot of advanced drivers and instructors driving at a lot of events that have forced induction. There's a reason for that.

[Longboarder]

Originally Posted by bigjae1976

Here in Texas, I track in 105 degree temps, sometimes on track temps are 110+ so this may not apply for folks in cooler climates.

But you are basically stacking coolers in front of coolers. There's no added volume of air so your radiator is now seeing air heated up by the intercooler. There's just not enough cooling on a stock motor. More HP = more heat. I've learned this. Many FI companies advertise their kits being used on the track. That's great and it works for them. I'd discuss with the company first before purchasing and make sure they understand the service demands the car will see. What I was told on my E46 330 kit is that it wasn't not designed for heavy track usage. For me that's a total game changer.

From my experience and looking at cars...you don't see a lot of advanced drivers and instructors driving at a lot of events that have forced induction. There's a reason for that.

I agree with you 100%. I would never subject my blown M3 with an 8,600 RPM limit to a 40+ lap session in 100+ degree SoCal desert heat. Anything in the late fall, winter and spring is ok (up to 75 deg) I think will be fine but beyond that I think it will be difficult to effectively remove the heat caused by the S/C. I just picked up a 2013 STi yesterday that I will use for summer tracking.

But I wanted to address the issue from the OP that the right S/C will not yield stock-like acceleration after a few laps in non-summertime temps.