02-24-2015, 08:46 AM | #1 |
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Race Gas vs Unleaded Supreme.
I’m doing my first BMW HPDE Track event at COTA in March . Is it worth the money to buy 15 Gal of 100 octane Sunoco Gas for the day of Racing or just drive it with 93 Supreme. The car has the Dinan Tune in her. I don’t think Temp is going to have an impact on things as it should be rather cool for Texas.
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2024 X3 M40i. wife says no Mods since it's aLease.. I see a JB4 tune in the near future.
2014 328i Melbourne Red Sport Line Dinan Dinantronics tune, Dinan Exhaust, Dinan Suspension, H&R Sway bars, 18x9 APEX PS-7 ,AFE CAI, BMW M Performance Brakes Retired |
02-24-2015, 02:17 PM | #2 | |
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I was out at COTA last year, no heat issues. |
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02-24-2015, 02:18 PM | #3 |
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02-25-2015, 08:16 AM | #5 |
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thanks for the info and the Video. like BOU707 what did you use to get the video. I have 2 Go Pro's that I will be using but would love to have something like that
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2024 X3 M40i. wife says no Mods since it's aLease.. I see a JB4 tune in the near future.
2014 328i Melbourne Red Sport Line Dinan Dinantronics tune, Dinan Exhaust, Dinan Suspension, H&R Sway bars, 18x9 APEX PS-7 ,AFE CAI, BMW M Performance Brakes Retired |
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02-26-2015, 01:46 PM | #6 | ||
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I run a GoPro3 Black on a custom mount I built that attaches to the headrest of the driver's seat. The GoPro's connected to an external mic (Sony EMC-DS70P) that I put down by the cigarette lighter with a foam wind-sock over it. Works well down there even with the windows open to get voices. When I recorded this one, I didn't have the sony camera, sound was from the GoPro internal mic. There's usually another GoPro mounted on the rear glass using a RAM suction mount. It cut out on that video b/c it ran out of batteries - forgot to charge it I marry it all together with RaceRender2 - I find the software really easy to use. The gauge cluser I use I made from pictures of my own gauges with the needles blacked out, then I have racerender draw the needles in for me. It all take a bit to learn, but now I can just throw my files in, synchronise them, and render without any real effort |
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02-26-2015, 03:59 PM | #7 |
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This sounds amazing! How do you get onto a list for COTA?
So far my F30 328 has received coilovers with camber plates, a front splitter, oil catch can, dual exhaust, and soon will get the Activ8 tune, Treadstone Chargepipes and ATM FMIC so I need to get it on a track. Since I live in Austin COTA would be awesome! |
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02-26-2015, 04:35 PM | #8 | |
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The 2015 / Third Annual BMWCCA Texas Trifecta Friday, March 20th – Sunday, March 22nd, 2015 Circuit of the Americas – Austin, TX The Lone Star, Tejas, and Houston Chapters of the BMWCCA proudly present the third annual Texas Trifecta at the Circuit of the Americas Formula 1 track in Austin, TX. This High Performance Driving School will give you the opportunity to drive your car at speed and to experience the potential of the unique combination of car and driver. It is safe, demanding and most importantly FUN! All students will alternate between classroom sessions and time on the track with an instructor. The individualized instruction is a key to this program that has been developed over decades, and compares very favorably with commercial schools costing many times more. Our experienced instructors have come from racing, autocrossing and BMWCCA schools. NOTE: As of 02/05/2015 We have opened up a FIRST-EVER NOVICE student group on the Circuit of the Americas track for our Texas Trifecta. NOVICE/BEGINNER drivers may now register for instructed driving on the big track for Friday, and for the autocross on Saturday if you would like to try autocross too. Don't miss your chance!!! CLICK HERE FOR MORE INFO AND TO REGISTER http://lscbmwcca.us7.list-manage.com...a&e=c981b72619 |
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06-08-2015, 09:17 PM | #9 | |
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06-09-2015, 08:23 AM | #10 |
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I heard from BMS a while ago that higher octane can help keep temps down. Can't hurt to add the 100 octane but there likely won't be a benefit if you are isn't running a tune to take advantage of the higher octane.
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06-09-2015, 09:42 PM | #11 | |
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Higher octane = slower burn = less heat = less power >> The DME will try to adjust timing via the tables but it can only do so much, once reaches it's limit to see any gains you must change the timing/fuel tables << When tuned for it: high compression motor or a tune (lean/aggressive timing) + higher octane fuel = more power = more heat. >> in a NA engine the high octane fuel is used to prevent knock, or to try to run the motor lean to find more power, or bc the compression is too high for regular 93oct. Is also used to prevent knock when you run too much boost, heat = knock = DME adjust timing to protect the engine = less power, or when you reach the limit of the spark... you literally can not light up the fuel in the combustion chamber << power = heat
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