12.03 1/4 mile run Bone stock M3!

[MpowerLex]

First time at the track. Was a busy night so was only able to get 3 runs in. Overall I feel pretty good about my times. I would have broke into the 11's if I would of remembered to adjust my tire pressure so I could hook up a lil better, but this time was done at 31psi, 93 oct gas, no mods, with a miss shift from 2nd to 3rd. I thought that I was shifting since I did launch control and was in manual mode, but the car shifted and so did I and instead of going into 2nd the car skipped and went to third. Next week I will deff get into the 11's.

[MpowerLex]

Originally Posted by MpowerLex

First time at the track. Was a busy night so was only able to get 3 runs in. Overall I feel pretty good about my times. I would have broke into the 11's if I would of remembered to adjust my tire pressure so I could hook up a lil better, but this time was done at 31psi, 93 oct gas, no mods, with a miss shift from 2nd to 3rd. I thought that I was shifting since I did launch control and was in manual mode, but the car shifted and so did I and instead of going into 2nd the car skipped and went to third. Next week I will deff get into the 11's.

Pics

[Vectors2final]

wat?

[crand002]

Slips please.

[MpowerLex]

Second attempt at pics

[Tony007]

awesome run!!

[MpowerLex]

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[MpowerLex]

[MpowerLex]

[dmk08]

Awesome. How did you miss shift DCT?

[MaynardZed]

Originally Posted by dmk08

Awesome. How did you miss shift DCT?

Sounds like he double shifted, once automatically by the car and once himself.

I'd say it would sound completely implausible to run 12 flat while totally skipping 2nd gear. But I've driven the car on a road course and the torque in 3rd gear is tremendous and it pulls really hard even from 30-40 mph.

[CanAutM3]

Originally Posted by MpowerLex

First time at the track. Was a busy night so was only able to get 3 runs in. Overall I feel pretty good about my times. I would have broke into the 11's if I would of remembered to adjust my tire pressure so I could hook up a lil better, but this time was done at 31psi, 93 oct gas, no mods, with a miss shift from 2nd to 3rd. I thought that I was shifting since I did launch control and was in manual mode, but the car shifted and so did I and instead of going into 2nd the car skipped and went to third. Next week I will deff get into the 11's.

Nice time . Even more impressive if it was done with a bad shift.

You need to be in manual (S) mode to be able to engage launch control. But as long as launch control is activated, DCT will upshift automatically. It is a bit counter intuitive. Launch control will deactivate if you shift manually or slightly lift off the throttle pedal as to disengage the "kickdown" button.

[nicknaz]

Originally Posted by CanAutM3

But as long as launch control is activated, DCT will upshift automatically.

Will the DCT upshift automatically at redline in other modes (i.e. in manual mode) outside of launch control?

Nice run OP

[MpowerLex]

Originally Posted by CanAutM3

Nice time . Even more impressive if it was done with a bad shift.

You need to be in manual (S) mode to be able to engage launch control. But as long as launch control is activated, DCT will upshift automatically. It is a bit counter intuitive. Launch control will deactivate if you shift manually or slightly lift off the throttle pedal as to disengage the "kickdown" button.

I will be going again next week. I will be lowering the tire psi, letting launch control does do the shifting with out me trying to manually do it, and raise the rpms to about 3500. If I get all this right, it should very easily break into the 11's.

[MpowerLex]

Originally Posted by dmk08

Awesome. How did you miss shift DCT?

The car shifted on its own and at the same time I shifted so it skipped 2nd and went right into 3rd.

[CanAutM3]

Originally Posted by nicknaz

Will the DCT upshift automatically at redline in other modes (i.e. in manual mode) outside of launch control?

In Sequential (manual) mode, DCT will not upshift automatically unless Launch Control is activated. The engine will go up to redline and then bounce on the limiter. This is where it gets tricky. If you do a Launch Controlled launch and inadvertently lift off the throttle during the acceleration run (this will deactivate LC), the engine will bounce off the limiter when you expect it to upshift automatically. Bottom line, keep the throttle pedal pinned to the floor during LC.

Note that DCT will downshift automatically even in S mode when the RPM drop to low to avoid bogging down the engine.

[MpowerLex]

Originally Posted by CanAutM3

In Sequential (manual) mode, DCT will not upshift automatically unless Launch Control is activated. The engine will go up to redline and then bounce on the limiter. This is where it gets tricky. If you do a Launch Controlled launch and inadvertently lift off the throttle during the acceleration run (this will deactivate LC), the engine will bounce off the limiter when you expect it to upshift automatically. Bottom line, keep the throttle pedal pinned to the floor during LC.

Note that DCT will downshift automatically even in S mode when the RPM drop to low to avoid bogging down the engine.

This is good info, should deff help solve the issues I was having. Thanks for your input.

[wantm135i]

you probably just learned the bmw in house trick iam sure the boost is higher in 3ed gear vs 2nd. thats how you run low times, or dont shift at red line to run 12 sec 1/4 mile runs.