03-21-2020, 08:18 PM | #155 | |
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I’d def get the undertray cut. |
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03-22-2020, 05:00 AM | #156 | ||
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03-22-2020, 05:02 AM | #157 |
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Quick question, which I concede might be missing the point: If the problem is cooling and it's preventing you from running a full track session, why not detune the engine so it generates less heat? By all means keep the enhancements that aid cooling, but take everything else off.
You won't have the enhanced top end and acceleration you crave, but you might be able to drive it as hard as you want for an entire session (noting the usual advice about a couple of cool-down laps). |
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03-22-2020, 08:23 AM | #158 | |
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When it comes to cooling you have two options: more capacity to remove the heat or generate less of it. For me, I want to see the impact of my upcoming E45 tune. I’m thinking the outcome will be more power and similar temp issues on hot summer days. If I break down how to address this: IAT- M2 version of the Evo III Comp if it ever comes out, or WMI. Coolant- I already have the larger CSF & do88 main and aux radiators. I’m going to talk to my mechanic about running 100% water with some wetter in the summer to improve thermal transfer. The question will be at what point will the water start to boil based on system pressure. And, I’ll use the BM3 max cool mode, but that might only buy me an extra lap from some additional precooling. Oil- I already have the larger CSF oil cooler. Tyspeed and some other race car guys put a larger oil cooler in front of the radiator and remove the oil/coolant cross flow exchanger. I’d prefer not to do this bc it has implications for a winter driven street car. Turbo- A larger turbo at the same power levels will generate less heat. Altho, it will have more lag for street driving. Tune- Turn it down to generate less heat. Certainly the cheapest & easiest fix. Altho, I’m still in an annual track battle with my Uncle and his Turner Motorsports prepped supercharged 2009 M3 (650-hp, full BBK & suspension, aero, etc). We’ve been able to cut our CMP track times by >6-sec in our last three annual battles while remaining neck & neck by upgrading and optimizing our setups each year, which is really pretty amazing. This year I’ll have more power, 30lbs less rotational & unsprung from my new wheel/tire combo, and I’ll sneak remove the back seat before I show up, so if we get into the 1:44s on CMP, that’s damn fast for a heavy street car that’s not on slicks—especially in the summer! If I weren’t battling a 650-hp car (albeit, much heavier, and I get him under braking and corner entry) in the middle of a South Carolina summer, there’d be less focus on power and heat management. Hell, one of the guys with a tuned M4 was having to dial back his power bc of heat issues. So, we’re not being slouches on track. The car runs fine for long open track sessions when ambient is <80F, I’m just enjoying trying to figure out how to make it work in the most extreme conditions, as well. Last edited by ZM2; 03-22-2020 at 10:12 AM.. |
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04-29-2020, 11:04 PM | #159 | |
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I've been running the Snow Performance system in my vehicle since Aug 2018 and have used it probably less than 10 times on a 50/50 blend to date because of his claim.
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04-30-2020, 01:29 AM | #160 | |
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It's unclear what you mean by 'heads have blown'... Do you mean the head gasket? That is possible, but more likely due to running too much boost. I run 50:50 WMI on my car every single day. I have the Aquamist progressive system so it comes on progressively based on a combination of boost and injector duty cycle (mostly duty cycle). I use it to increase octane, and for cooling. It seems strange to me that you've used it less than 10 times. You're either tuned for it or you're not. It doesn't increase power output on its own, unless the map you're running is actually for a higher octane and you letting the DME turn down timing etc., which isn't a good idea anyway. I'd say that it may actually be good for the engine, but you should have it on all of the time, and tune for that.
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Current Performance Mods: CSF FMIC, ER CP, Fabspeed Cat, Aquamist WMI, GFB DV+, NGK 97506, BM3 (Stage 2 93 OTS), CDV delete, UCP, M2C/M3/M4 Strut Brace, M3/M4 Reinforcement Rings |
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04-30-2020, 11:37 AM | #161 |
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i use MHD's software to run the water pump a lot faster than stock, even when i'm pushing the car hard i don't see oil temps higher than 110C and that's if i'm really beating it up. My car likes to sit around 89c 92c on most days.
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04-30-2020, 12:09 PM | #162 | |
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Are you sure MHD is actually running the pump faster than stock when the car is hot, vs just kicking in higher water pump speeds as the car is heating up? If that later, that would just buy an extra lap or two by keeping the car a little cooler in the beginning of a track session. |
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04-30-2020, 12:11 PM | #163 | ||
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If I use MHDs "track" setting it keeps the coolant at 82c across the board all the time, hense keeping my oil ALOT cooler.
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04-30-2020, 12:23 PM | #164 | |
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I don't run BM3's Max Cool mode around town b/c oil & coolant temps stay within normal operating ranges anyways, but I'll be trying it when I get back on track later this summer to see just how long it'll prolong the inevitable. Again, I'm guessing it'll only buy an extra lap or so by cooling things off a bit more before going full tilt on track. |
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04-30-2020, 12:25 PM | #165 | ||
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04-30-2020, 09:10 PM | #166 | |
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Given your advise, i'll be sure to run my WMI on a progressive setup for daily use.
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05-04-2020, 08:45 AM | #167 |
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Errrrrr how'd you manage that?
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05-04-2020, 01:16 PM | #169 |
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I use it 24/7...
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05-04-2020, 04:35 PM | #170 |
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05-04-2020, 04:58 PM | #171 |
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What's optimal temp for you? My cars good to beat on at 90C
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05-04-2020, 06:37 PM | #172 |
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05-04-2020, 06:54 PM | #173 |
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Yeah, I much rather keep the engine cool and have power on tap then to have to worry about heat soak. Fuel mileage isn't that important to me since it's my fun car
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05-04-2020, 07:24 PM | #174 |
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Unless you’re seeing coolant above 242F and oil above 272F, IATs are more important to focus on to keep power levels up. Those engine temps are when the ECU begins to pull power.
However, timing begins to be pulled above 105F IAT, which is easy to hit. Speaking of IATs, I know someone with the new Evo 3 Comp on their M2 and the data looks mighty impressive. He’s doing more testing and I won’t spoil the unveiling for him.... |
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05-04-2020, 11:19 PM | #175 | |
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05-04-2020, 11:39 PM | #176 |
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