10-27-2018, 03:46 PM | #1 |
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I did some experiments with Launch Control RPM
( onfireX5 recommends the best Lunch at 2.7K ) Here is what I noticed: At about 2.5- 2.7 RPM it short shifts super short at around 4K sometimes not even that, I have seen at 3k shifts ( I believe not enough boost sense it doesn't spin tires much ) see second video At 3k it lunches super mad and spins even at second gear ( builded enough boost ) see first video Mine conclusion is: This car will bring best time at full boost at 3K but ONLY with wider tires like 285front and 305 back ( which I will order soon anyway regardless of launch Control ) I will order V Box after winter and record numbers and see what will bring the best 1/4 mile This car is a beast and I love it Having 600 mil on race chip and works flawlessly Also having Eisenmann Race exhaust Eisenmann non resonated mid pipes Eisenmann lower down pips Last edited by Miko M; 10-31-2018 at 04:14 PM.. |
10-27-2018, 04:06 PM | #2 |
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Nice vids. 2700rpm Launch does not mitigate the short shift. It just hooks better and accelerated quicker on stock tires vs 3000rpm spinning launches. Mine has short shifted with 2700 and 3000 rpm launches. It had also revved out to 6500ish in 1st with 2700 and 3000 rpm launches. Nannies at work even though “off”.
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Miko M6648.50 r33_RGSport12805.00 |
10-27-2018, 04:28 PM | #3 | |
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I tried to find out WHY sometimes short shifts and sometimes doesn't. Lol I like consistency and try to figure this thing out. I WISH you can dial the RPM +/- on steering wheel for increasing or decreasing RPM like other cars You can have better control and consistency Besides that...OMG this car is fast
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onfireX53616.50 r33_RGSport12805.00 |
10-27-2018, 04:40 PM | #5 |
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No, I am switching stock rims for winter
Getting new set 20/10 front with 285 and 20/11 back with 305
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10-27-2018, 04:43 PM | #6 |
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10-27-2018, 04:47 PM | #7 |
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I haven't launched with the RaceChip yet but I had some pulls on the highway yesterday. It is ridiculously fast!!
Had a C63s trying to play around last night and it wasn't even close 60-130+. Im going to try LC tomorrow once it drops raining here to avoid adding to the wheel spin lol. Also, look into Draggy vs vbox- very easy to use and also lets you record video if you have an iPhone. |
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Miko M6648.50 r33_RGSport12805.00 |
10-27-2018, 05:01 PM | #8 | |||
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10-27-2018, 05:07 PM | #9 | |
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10-27-2018, 06:12 PM | #10 | ||
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10-27-2018, 08:22 PM | #11 | ||
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Will the driveshaft twisted and snap like a toothpick? One way to find out, Quickburn7 . Let's test your driveshaft. Since you have tested the oil cooler for BMW already.
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10-28-2018, 05:05 AM | #12 |
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What did eat at LUNCH?.
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10-28-2018, 08:13 AM | #13 |
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Lol, auto correct. I have no idea how to change to correct the post
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10-29-2018, 09:18 AM | #14 | |
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Interesting vid. Thanks for posting. BMW's Control Logic is to up shift if certain wheel speed parameters are exceeded even if DSC is OFF. Only other thing I have noticed, (report what you observe), is it always allows 1st gear to redline on a rolling start....has never 4000rpm shifted 'yet' , that way. |
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10-29-2018, 09:37 AM | #15 |
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No probs.
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10-29-2018, 09:57 AM | #16 | ||
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Didn't have much time to look into details, but I never had it short shift in rolling start. Interesting that it was spinning in second gear too. Temperature was 55deg which has a lot to do with grip. I had that car launched several times and it never past 4K RPM even with less wheel spin. Trying to figure this sucker out. Lol Try to find the best RPM for best acceleration, which is very hard to dial the RPM, holding a little longer and there it goes to 3K
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10-29-2018, 10:14 AM | #17 | |
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10-29-2018, 11:32 AM | #20 |
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Nice Miko, I have felt the same results you have with the RC! I am not even sure I need to go to a full blown ECU tune when its ready. Im enjoying just like you are with the mods. The car kills it from a dig now.
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Miko M6648.50 r33_RGSport12805.00 |
10-29-2018, 11:44 AM | #21 | |
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Thanks Thanks, Yes it dose man
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10-30-2018, 10:14 PM | #22 | |
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Maybe PureTurbo upgrade.
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