LCI 328i questions

digivue · 02-03-2009, 01:28 PM

For LCI 328i AT owners:
1. Do you experience a second or so delay during kick down?
2. No matter what I do there is no wheel slip during launch (no enough power delivery at low gears?). It wasn't the case with 325i I used to have. As far as I know a little wheel slip is the best for the quickest launch.

Nr!qUe · 02-03-2009, 06:14 PM

1- I don't think the AT on the LCI and Pre-LCI are too different, but my sister has an 07 328 AT, and I do think that the first gear is kinda slow or sluggish (not sure if that's what you're asking about) I have an MT 328 LCI and I don't feel a slow kick down. (like i said, i'm not sure what you mean by kick down)
2- I dont think the Stability control program allows you to do wheelspins, Try turning off the Stability control program by pressing and holding the DTC button. Also try (if you arent already doing so) Holding the brake and revving it up to high rpms and then letting off the brake

chaz58 · 02-04-2009, 03:25 PM

The new cars have the same e-diff they put in the 1 series. It does a good job of mimicking an LSD - there is much less wheel slip with it.

Quote:

Originally Posted by digivue

For LCI 328i AT owners:
2. No matter what I do there is no wheel slip during launch (no enough power delivery at low gears?). It wasn't the case with 325i I used to have. As far as I know a little wheel slip is the best for the quickest launch.

tctic · 02-05-2009, 02:50 AM

Quote:

Originally Posted by digivue

For LCI 328i AT owners:
1. Do you experience a second or so delay during kick down?
2. No matter what I do there is no wheel slip during launch (no enough power delivery at low gears?). It wasn't the case with 325i I used to have. As far as I know a little wheel slip is the best for the quickest launch.

1. Gearbox down shifting, that maybe the reason to the delay that you felt. The 325i had a different gearbox from ZF. Not sure if that would make a difference. I never drove the 328i before so I would not know the difference, if any.
2. Your 328i probably has more grip on its tires? Could also be stability control as other have said.

digivue · 02-05-2009, 12:59 PM

Quote:

Originally Posted by tctic

1. Gearbox down shifting, that maybe the reason to the delay that you felt. The 325i had a different gearbox from ZF. Not sure if that would make a difference. I never drove the 328i before so I would not know the difference, if any.
2. Your 328i probably has more grip on its tires? Could also be stability control as other have said.

Actually, tried with DTC off, still the same.

canucklion · 02-05-2009, 01:30 PM

AFAIK 325i autos were sourced from GM.

Quote:

Originally Posted by tctic

1. Gearbox down shifting, that maybe the reason to the delay that you felt. The 325i had a different gearbox from ZF. Not sure if that would make a difference. I never drove the 328i before so I would not know the difference, if any.

Bimmer007 · 02-05-2009, 02:02 PM

its a new car and has brand new tires, the transmission has to adapt to your driving, try stepping on the gas a little with one foot on the brake to raise the revs. also why do you want to do this? you should have bought an mt if you want to burn your tires.

digivue · 02-05-2009, 03:25 PM

Quote:

Originally Posted by Bimmer007

its a new car and has brand new tires, the transmission has to adapt to your driving, try stepping on the gas a little with one foot on the brake to raise the revs. also why do you want to do this? you should have bought an mt if you want to burn your tires.

I rev the car, so the tranny is used to it

Here, I compare 325i and 328i with the same configuration, but the behavior is not the same.

tctic · 02-05-2009, 08:16 PM

Quote:

Originally Posted by canucklion

AFAIK 325i autos were sourced from GM.

Nope. 325i has the "GA6HP19Z" joint developed by BMW and ZF. The 330i that was sold for one year in North America also sports an automatic transmission from ZF. The 328i has the "GA6L45R" sourced from GM.

02-03-2009, 01:28 PM	#1
digivue Second Lieutenant 25 Rep 279 Posts Drives: '09 E90 Join Date: Mar 2008 Location: NorCal iTrader: (0)	LCI 328i questions For LCI 328i AT owners: 1. Do you experience a second or so delay during kick down? 2. No matter what I do there is no wheel slip during launch (no enough power delivery at low gears?). It wasn't the case with 325i I used to have. As far as I know a little wheel slip is the best for the quickest launch.
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02-03-2009, 06:14 PM	#2
Nr!qUe Captain 70 Rep 975 Posts Drives: 2009 E90 LCI 328i 6MT Join Date: Nov 2008 Location: Miami, FL iTrader: (3)	1- I don't think the AT on the LCI and Pre-LCI are too different, but my sister has an 07 328 AT, and I do think that the first gear is kinda slow or sluggish (not sure if that's what you're asking about) I have an MT 328 LCI and I don't feel a slow kick down. (like i said, i'm not sure what you mean by kick down) 2- I dont think the Stability control program allows you to do wheelspins, Try turning off the Stability control program by pressing and holding the DTC button. Also try (if you arent already doing so) Holding the brake and revving it up to high rpms and then letting off the brake __________________ 2009 BMW E90 328i \| Xenons \| MT \| Space Gray \| Beige-ette \| CF Fabric Trim \| iPod/USB \| 20% Tints \| Euro-Plate \| Rear Fog Switch Lego Mod \| Painted Reflectors \| Performance Short-shift Kit \| Style 197 Wheels \| OEM Sport Suspension \|
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02-05-2009, 02:02 PM	#7
Bimmer007 Lieutenant 41 Rep 537 Posts Drives: Cars Join Date: Sep 2007 Location: Long Island, NY iTrader: (0)	its a new car and has brand new tires, the transmission has to adapt to your driving, try stepping on the gas a little with one foot on the brake to raise the revs. also why do you want to do this? you should have bought an mt if you want to burn your tires.
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