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      04-29-2011, 09:02 PM   #155
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I can imagine your frustration. My car was reading 290 tonight with outside air at 60. This was with 5-6 hard launches. My kids think it's fun for me to let it rip in 1st/2nd. I can tell an immediate difference in 30 degrees operating temp. Very frustrating. I've only had the car 6 weeks. I hope this isn't a constant issue, otherwise I'll dump the thing and get a NA car.
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      04-29-2011, 09:38 PM   #156
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Anyone try tracking without the plastic blanket on, aka valve/head cover? I'm gonna try it, I will be logging oil and water temps this year.
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      04-30-2011, 05:17 PM   #157
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So I joined the limp mode party at the track today... Really bummed that I lost out on some track time, but somewhat comforted that this is normal for the N54 and that I'm not the only one this has happened to. I do wish I came across this thread prior to my event. But I digress...

Temperatures around 60 deg F at Watkins Glen today. Running JB4 on map2 with intake, downpipes, exhaust, and FMIC. I guess I'll try running with heater on full blast tomorrow. Anyone else have any other suggestions?
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      04-30-2011, 05:22 PM   #158
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Oh, and no apparent overheating issues with the three E46 M3's in my class.
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      04-30-2011, 06:54 PM   #159
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Quote:
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Temperatures around 60 deg F at Watkins Glen today. Running JB4 on map2 with intake, downpipes, exhaust, and FMIC. I guess I'll try running with heater on full blast tomorrow. Anyone else have any other suggestions?
err..yeah, Don't run JB4. More power might create more heat.
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      04-30-2011, 06:56 PM   #160
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Oh, and no apparent overheating issues with the three E46 M3's in my class.
They weren't designed to go into limp mode, like our cars. Trust me, they hit 280F. Castrol 10W 60 is in their engines, so the temps didn't hurt them.
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      04-30-2011, 08:17 PM   #161
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well ran today at MSR- Cresson, TX. Running Cobb stage 1 V2.02v2. Ambient ranged from 75-93 for last session. Using the Stett stg II Oilcooler, the highest temps I saw we 250! Awesome. In other 335's there were a few limp in some autos (I am MT), and all the cars with the factory cooler were staring at 280++ all day.
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      04-30-2011, 09:54 PM   #162
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Originally Posted by rdub View Post
So I joined the limp mode party at the track today... Really bummed that I lost out on some track time, but somewhat comforted that this is normal for the N54 and that I'm not the only one this has happened to. I do wish I came across this thread prior to my event. But I digress...

Temperatures around 60 deg F at Watkins Glen today. Running JB4 on map2 with intake, downpipes, exhaust, and FMIC. I guess I'll try running with heater on full blast tomorrow. Anyone else have any other suggestions?
dial it down, try map 5 and heater on. If that works then map 2 and heater on. Work from the bottom up so you don't lose (too much) track time. Try to see if you can get a coolant reading tomorrow too.

Last edited by mid-corner fun; 04-30-2011 at 10:04 PM.
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      04-30-2011, 10:01 PM   #163
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well ran today at MSR- Cresson, TX. Running Cobb stage 1 V2.02v2. Ambient ranged from 75-93 for last session. Using the Stett stg II Oilcooler, the highest temps I saw we 250! Awesome. In other 335's there were a few limp in some autos (I am MT), and all the cars with the factory cooler were staring at 280++ all day.
congrats!! that's very reassuring for the STETT guys, the cooler seems to hold up well at high ambient temps.
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      05-01-2011, 08:20 AM   #164
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They weren't designed to go into limp mode, like our cars. Trust me, they hit 280F. Castrol 10W 60 is in their engines, so the temps didn't hurt them.
There's limp mode on the E46 M3s too, or rather, warning lights that tells you of impending doom.

I believe that when oil temp reaches 305 degrees the S54 will act the same. I've seen/heard of this only once though, at a track day where Tarmac temps were registering 160 degrees plus. Coolant temp, I believe, does not trigger "limp" mode like the N54 does. You just get the idiot light when coolant is above a certain level.
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      05-01-2011, 08:21 PM   #165
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Well I tried to get through day 2 with JB4 on Map 0 and heat blasting for each session. 1st session I lasted 2 laps before going into limp mode. 2nd session no limp modes. 3rd session I lasted 1 lap. When I got the limp modes I pitted, turned car off and let sit for about a minute. After restart, I'd get 0-2 laps in. It just seemed so random. Oil temps didn't appear to go over 260. So I'm wondering if I've got other issues.

So I have mixed emotions about my experience. I wish the car held up better and I didn't lose precious track time, but on the other hand it was a truly rewarding experience. I learned so much about the car's track capabilities (aside from constantly overheating) and greatly improved my driving skills. I also now have a huge appreciation for Watkins Glen International, as well as the Trackmasters driving school. HUGE props to Trackmasters!
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      05-01-2011, 08:33 PM   #166
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Thanks Turkeybaster115! Thanks for the updated description to read coolant temps. I needed a couple of tries to get it to work. The trick was to scroll fast to 07._ _ once I had entered the code.

Now to the results.

Ambien temperature at Sebring today started out at mid 60's and high 80's at the end of the day.

My oil temp never went above 280F. I have the AR design oil cooler, 6MT.

However, coolant temp hit 117C already in my second session and the enginge immediately lost all power. No Limp mode however (as in check engine light). After a few minutes of low speed cruising the coolant temp dropped back to normal levels and I got full power back.

Wonder if this happens as the AR Design Oil Cooler covers a large portion of the radiator?

I ran the last 3 sessions of the day constantly checking the coolant temp and as soon as it rose above 114C I put the car in 5th or 6th gear until it dropped below 108C before I got back on it.
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      05-01-2011, 08:54 PM   #167
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Quote:
Originally Posted by rdub View Post
Well I tried to get through day 2 with JB4 on Map 0 and heat blasting for each session. 1st session I lasted 2 laps before going into limp mode. 2nd session no limp modes. 3rd session I lasted 1 lap. When I got the limp modes I pitted, turned car off and let sit for about a minute. After restart, I'd get 0-2 laps in. It just seemed so random. Oil temps didn't appear to go over 260. So I'm wondering if I've got other issues.

So I have mixed emotions about my experience. I wish the car held up better and I didn't lose precious track time, but on the other hand it was a truly rewarding experience. I learned so much about the car's track capabilities (aside from constantly overheating) and greatly improved my driving skills. I also now have a huge appreciation for Watkins Glen International, as well as the Trackmasters driving school. HUGE props to Trackmasters!
Most likely coolant probs. Join the club.

If you want to be sure though read your codes, what else did you get other than 3100?
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      05-01-2011, 10:03 PM   #168
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Thanks Turkeybaster115! Thanks for the updated description to read coolant temps. I needed a couple of tries to get it to work. The trick was to scroll fast to 07._ _ once I had entered the code.
NO, Thank you, for logging temps, and reporting back here. We need as much data as we can get, so we know if we need to upgrade our stock cooling system.
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      05-01-2011, 11:07 PM   #169
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OK. Here goes with the facts for you AT drivers: Thunderhill, 2 full days: ran 2:09s on fastest laps, 2:10s with passenger. I only note this so you can tell how hard I was driving. This is vital as not everyone drives the same way and stresses their car the same way. For instance: some people have the AR cooler and it works for them. Some have 1 Stett and it works. I'm confident neither of these setups would work for me. I had the AR so I have first hand experience and the dual ER system I currently have is just barely enough.

Bad News (not too bad): One limp mode due to a quirk if you do a high rev down shit when the car is hot and your not on the gas. Back pressuer seems to cause. It's happened 4 or 5 times. No biggy I just make sure to not down shift like that.

Good News (Really Good): I finally have the car that was promised by BMW. I run stock power with ER competition oil coolers and 100% water with Mocool; other mods in SIG. It's transformed my car. It still gets hot but not so much I have good power throughout a 30 minute sessions at 100%. It would normally map back under high heat and lose quite a bit of power above 270. No short shifting. No limp modes - besides the one above.

The Data:
Morning sessions - 58 - 68 ambient - never saw over 265 oil temps and 98c coolant temps. I know, close to boiling temps but far better than the 117 mentioned above.

Afternoon sessions - 72 - 80 ambient - saw some 275 oil temps towards the end of the sessions and 102c coolant.

I was able to drive at 100% for the entirety of all sessions and power mapped back only minimally - butt dyno only ;-)

Really pleased. I originally had the ER setup with normal coolant. I still would lose some power and got one limp mode due to coolant temps on a previous track day. The distilled water and Mocool really made a nice difference.

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      05-02-2011, 07:34 AM   #170
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Quote:
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The Data:
Morning sessions - 58 - 68 ambient - never saw over 265 oil temps and 98c coolant temps. I know, close to boiling temps but far better than the 117 mentioned above.

Afternoon sessions - 72 - 80 ambient - saw some 275 oil temps towards the end of the sessions and 102c coolant.

I was able to drive at 100% for the entirety of all sessions and power mapped back only minimally - butt dyno only ;-)

Really pleased. I originally had the ER setup with normal coolant. I still would lose some power and got one limp mode due to coolant temps on a previous track day. The distilled water and Mocool really made a nice difference.

Hmmm.... So previously with your stett OC you ran the coolant to 117C which caused the limp modes. After replacing coolant with Distilled Water and Mocool you reduced coolant temps by a good 15C which solved your problem.....?

I got the manual transmission so if the Distilled Water and Mocool trick will reduce my coolant temps with 15C I should not need to upgrade the radiator yet.......

Anybody else that can confirm coolant temps dropped by 15C with Mocool and Distilled Water?
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      05-02-2011, 08:29 AM   #171
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Hmmm.... So previously with your stett OC you ran the coolant to 117C which caused the limp modes. After replacing coolant with Distilled Water and Mocool you reduced coolant temps by a good 15C which solved your problem.....?
I never had the stett. I had the AR then replaced it with the ER competition oil coolers.
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      05-02-2011, 08:35 AM   #172
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I never had the stett. I had the AR then replaced it with the ER competition oil coolers.
Sorry, my bad. I meant even with the ER Oil Cooler you still had Coolant issue but with Distilled Water and Mocool the issue was resolved. That gives me hope.

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      05-02-2011, 09:21 AM   #173
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Sorry, my bad. I meant even with the ER Oil Cooler you still had Coolant issue but with Distilled Water and Mocool the issue was resolved. That gives me hope.
Yes
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      05-02-2011, 09:33 AM   #174
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Originally Posted by jbass524 View Post
OK. Here goes with the facts for you AT drivers: Thunderhill, 2 full days: ran 2:09s on fastest laps, 2:10s with passenger. I only note this so you can tell how hard I was driving. This is vital as not everyone drives the same way and stresses their car the same way. For instance: some people have the AR cooler and it works for them. Some have 1 Stett and it works. I'm confident neither of these setups would work for me. I had the AR so I have first hand experience and the dual ER system I currently have is just barely enough.

Bad News (not too bad): One limp mode due to a quirk if you do a high rev down shit when the car is hot and your not on the gas. Back pressuer seems to cause. It's happened 4 or 5 times. No biggy I just make sure to not down shift like that.

Good News (Really Good): I finally have the car that was promised by BMW. I run stock power with ER competition oil coolers and 100% water with Mocool; other mods in SIG. It's transformed my car. It still gets hot but not so much I have good power throughout a 30 minute sessions at 100%. It would normally map back under high heat and lose quite a bit of power above 270. No short shifting. No limp modes - besides the one above.

The Data:
Morning sessions - 58 - 68 ambient - never saw over 265 oil temps and 98c coolant temps. I know, close to boiling temps but far better than the 117 mentioned above.

Afternoon sessions - 72 - 80 ambient - saw some 275 oil temps towards the end of the sessions and 102c coolant.

I was able to drive at 100% for the entirety of all sessions and power mapped back only minimally - butt dyno only ;-)

Really pleased. I originally had the ER setup with normal coolant. I still would lose some power and got one limp mode due to coolant temps on a previous track day. The distilled water and Mocool really made a nice difference.

Very nice, congrats. So now we have 2 track-based water temps data points, let's keep them coming! I'll try to organize them in a small/readable format so we can all benefit.
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      05-02-2011, 09:59 AM   #175
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Does this work? Send me as many data points as you have and I'll keep updating it. As jbass mentioned lap times are useful as an indication of how hard the car is driven.

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      05-02-2011, 12:21 PM   #176
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Does this work? Send me as many data points as you have and I'll keep updating it. As jbass mentioned lap times are useful as an indication of how hard the car is driven.

This is great. PeterM1. BTW, I was doing 2:11 and 2:10 in the morning sessions.

I am going to have a conversation with Andrew at AR about the relation between radiator, transmission cooling and oil coolers. He has a new radiator coming out and like Turkey. Mentioned this may not be the culprit. Harold at HP has data that says it is though.
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