1/4 Mile Run 2011 135 DCT.. Showroom stock.

tzsgti · 10-18-2011, 01:26 AM

So i went to the track this past Sunday since it was a really nice day and ran the 135i.

Car: 2011 BMW 135i DCT
Mods: None (stock down to the paper filter)
Tires: Original OEM Bridgestone Runflats.
Miles: 6400 miles on the car.
Temps- Between 62-65F
Tire pressure: Rear Tires at 30 PSI
Track: Island Dragway

I got 5 runs. For all the runs i used Launch Control and shifted at 6k rpm from 2nd and on.

The car ran pretty consistent all day. I ran a 13.1,13.2,13.2,13.3 and one 13.7.

My best run of the day was 13.1@105.56..

60' 2.026
330' 5.584
1/8 8.522
MPH 85.21
1000' 11.047
1/4 13.184
MPH 105.56

All in all i was happy with the runs but i felt the car has a lot more in it. Cooler temps and a lighter driver (

) and i think i can get it down to 13.0 and even 12s in a showroom stock car!!! I will try at Atco to see if i can get better times.

This is for all the nay Sayers that say the DCT transmission sucks for drag racing. I don't see it

cooler2442 · 10-18-2011, 01:34 AM

It's because you haven't added any power yet. Once you do it will suck real bad. Launch control will make you spin, launching yourself will make you spin even more.

Top Gon · 10-18-2011, 02:26 AM

Is it possible to launch in 2nd gear in the DCT like the Steptronic?

peepsdayz · 10-18-2011, 06:33 AM

Quote:

Originally Posted by Basheezy

Is it possible to launch in 2nd gear in the DCT like the Steptronic?

Nope not possible

Vtec Abuser · 10-18-2011, 08:01 AM

Cracking results mate for a stock car.. As mentioned above, this may interest you if you are looking at modding...

http://www.1addicts.com/forums/showt...1#post10632160

Vtec Abuser · 10-18-2011, 08:02 AM

Quote:

Originally Posted by Basheezy

Is it possible to launch in 2nd gear in the DCT like the Steptronic?

Pull off in 2nd, yes. Launch, no...

Top Gon · 10-18-2011, 07:50 PM

Quote:

Originally Posted by Vtec Abuser

Pull off in 2nd, yes. Launch, no...

I guess thats the best you can do. Better than spinning all of 1st and it saves you a shift.

wkndracr · 10-22-2011, 09:54 PM

wow, I'd say those are pretty nice numbers for a stock car with runflats. Island raceway, huh? I was there years ago in my import drag racing days. From what i remember, there wasn't much of a shut down area, even with a high 14sec car.

tzsgti · 10-23-2011, 07:50 PM

Quote:

Originally Posted by BimmerEngineer

First off, launch control is useless unless you are running drag radials or slicks... Also, in Launch control, the car shifts for you, so I dont know why you decided to interupt that and shift for yourself... Also, most mags have said that the best times have come from all traction off, pushing the sport button and putting it in manual mode with the driver shifting at the best power point is around 6200-6300 rpm...

To leave the line in 2nd gear turn off all traction, push sport button, put car in manual mode, M2 and brake boost just slightly, floor it off the line, shifting at around 6200-6300 rpm...

You need to add the DA (density altitude) in with the temps... Temps are not going to lower performance that much when below 65*f down to 32*f, but a low DA WILL... combined with a low temp... The eastern seaboard and west coast in a few cities in these areas run DA's below sealevel... And, the tracks are 400' above sealevel or less... If the DA is -500'--1000 below sealevel it has the effect of gaining 35-55 hp... 13.1 @ 105 is pretty good stock..., but AGAIN, many dont seem to grasp the DA concept... I ran my car here in phx, az with a temp of around 85* and a DA of 2100' at a track that's at 1102'>> my best was 13.5 @ 107 mph with a JB3 Stg 1 beta N55 ... I bet at sealevel I probably could run 12.9 @ 110 with just tune & lighter, stickier non-run flats... only...

The reason i am shifting early is because if you look at a stock dyno graph on the N55 the car falls flat at 6k rpm. I tried both and i seem to get better numbers by shifting at 6k rpm.

Second - I saw that in car and driver. I don't know about them but when i launch it by turning everything off and punching the gas the car lags then pretty much drops the clutch. That is how to a burn out on this car

I find the only way to launch is using LC and hope for the best. I wish we were able to control what RPM we can launch at but it is what is.

I am not sure what the DA was at that time but i am going to try to go to Atco soon which usually has the sickest DA of the whole country.

I am not sure how the car will respond once its modded but for now the LC is pretty consistent with a stock car. I ran at two different tracks so far and i went back today and was running 13.2s and 13.3s all day besides for one bad run of 13.4.

Let the modding being and we will see

Edit - Actually found the conditions on that day.

550 ft above sea level
Density Altitude: 1295 feet
Relative Density: 96.27 %

tzsgti · 10-23-2011, 07:53 PM

Quote:

Originally Posted by wkndracr

wow, I'd say those are pretty nice numbers for a stock car with runflats. Island raceway, huh? I was there years ago in my import drag racing days. From what i remember, there wasn't much of a shut down area, even with a high 14sec car.

It was fine.. I didn't let off until about 120 and had plenty of time to shut off.

10-18-2011, 01:26 AM	#1
tzsgti Private First Class 16 Rep 155 Posts Drives: 2015 BMW M3 Join Date: Feb 2008 Location: NY iTrader: (0)	1/4 Mile Run 2011 135 DCT.. Showroom stock. So i went to the track this past Sunday since it was a really nice day and ran the 135i. Car: 2011 BMW 135i DCT Mods: None (stock down to the paper filter) Tires: Original OEM Bridgestone Runflats. Miles: 6400 miles on the car. Temps- Between 62-65F Tire pressure: Rear Tires at 30 PSI Track: Island Dragway I got 5 runs. For all the runs i used Launch Control and shifted at 6k rpm from 2nd and on. The car ran pretty consistent all day. I ran a 13.1,13.2,13.2,13.3 and one 13.7. My best run of the day was 13.1@105.56.. 60' 2.026 330' 5.584 1/8 8.522 MPH 85.21 1000' 11.047 1/4 13.184 MPH 105.56 All in all i was happy with the runs but i felt the car has a lot more in it. Cooler temps and a lighter driver () and i think i can get it down to 13.0 and even 12s in a showroom stock car!!! I will try at Atco to see if i can get better times. This is for all the nay Sayers that say the DCT transmission sucks for drag racing. I don't see it __________________ Current: 2015 BMW M3 Past: 2013 Porsche 911 C2 2011 BMW 135i
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10-18-2011, 01:34 AM	#2
cooler2442 Brigadier General 477 Rep 4,154 Posts Drives: 1/18 Monte Carlo Blue E92 M3 Join Date: Apr 2011 Location: Los Angeles iTrader: (6) Garage List 2016 Porsche GT4 [0.00]	It's because you haven't added any power yet. Once you do it will suck real bad. Launch control will make you spin, launching yourself will make you spin even more.
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10-18-2011, 02:26 AM	#3
Top Gon Bashar 412 Rep 1,120 Posts Drives: 2023 BMW Z4 M40i Join Date: Jun 2010 Location: Bay Area, CA iTrader: (4)	Is it possible to launch in 2nd gear in the DCT like the Steptronic?
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10-18-2011, 08:01 AM	#5
Vtec Abuser First Lieutenant 35 Rep 367 Posts Drives: 2012 135i DCT Join Date: Jan 2009 Location: Every-bloody-where.. iTrader: (0)	Cracking results mate for a stock car.. As mentioned above, this may interest you if you are looking at modding... http://www.1addicts.com/forums/showt...1#post10632160
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10-22-2011, 09:54 PM	#8
wkndracr First Lieutenant 60 Rep 300 Posts Drives: '10 135i Join Date: Jan 2010 Location: Yonkers, NY iTrader: (0)	wow, I'd say those are pretty nice numbers for a stock car with runflats. Island raceway, huh? I was there years ago in my import drag racing days. From what i remember, there wasn't much of a shut down area, even with a high 14sec car. __________________ 2016 M4 MG 6MT, sunroof. Some audio mods, Swift springs (so far).
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