Auto-tranny Launch - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 06-20-2010, 02:27 PM
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Auto-tranny Launch

Hey guys, i was wondering i have a 325ia and is there a way to improve launch?
All i get is the brake-torque technique but it wont go higher than 2000rpm.

Is there a way to improve it? like chip or mods or anything? (and dont say auto to tranny swap though haha lol )
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#2 (permalink) Old 06-20-2010, 09:51 PM
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Not really and there's a reason for that. The fact of the matter is there really is no upgrades you can do to the original automatic transmissions in these cars. You're just going to have to make do with the 2000RPM brake torque method...

That or you can do a manual swap lol
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#3 (permalink) Old 06-20-2010, 10:25 PM
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HUummm.. =\ that sucks.... but its cool. At least now i know. I was researching for a while and couldnt find anything. Great thankss man..

And by te way.... your e39 looks FANTASTIC in this pic man. Congratulations its beautiful. it its 528, 540 or what?
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#4 (permalink) Old 06-20-2010, 10:33 PM
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I remember in my Muscle Car days, they had Performance Automatic shift & Torque Converter kits........




jb

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#5 (permalink) Old 06-20-2010, 10:40 PM
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I know dinan have a tranny chip to improve the shifting but, nothing change on lauching a car. torque converter kit, would help on lauching?? how?
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#6 (permalink) Old 06-20-2010, 10:48 PM
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HUummm.. = that sucks.... but its cool. At least now i know. I was researching for a while and couldnt find anything. Great thankss man..

The only company that makes software for the transmissions is Dinan (not sure if they have anything for the E36 though) and I just remembered that, but it won't help you getting off the line any faster and it's overpriced for what it is.

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And by te way.... your e39 looks FANTASTIC in this pic man. Congratulations its beautiful. it its 528, 540 or what?
Thanks! It's a 528i...nice and slow but I guess it gives people a better chance to look at it LOL.
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#7 (permalink) Old 06-20-2010, 10:55 PM
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The only company that makes software for the transmissions is Dinan (not sure if they have anything for the E36 though) and I just remembered that, but it won't help you getting off the line any faster and it's overpriced for what it is.
True, they have it, and it IS overpriced. 199$ hehehehe.

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Thanks! It's a 528i...nice and slow but I guess it gives people a better chance to look at it LOL.

hahahha its not slow at all, its a great car, it is slow compared to ///M but, still for a daily car, its really fast at my point of view, and it has more space than mine.... i wish i had one of these. and the wheels, the paiting, it looks amazing!!!! eibach sport springs? or m5? its auto or manual?
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#8 (permalink) Old 06-20-2010, 11:11 PM
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Quote:
Originally Posted by WesleyBR View Post
I know dinan have a tranny chip to improve the shifting but, nothing change on lauching a car. torque converter kit, would help on lauching?? how?




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#9 (permalink) Old 06-22-2010, 04:54 PM
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Quote:
Originally Posted by johnnybayonne View Post
I remember in my Muscle Car days, they had Performance Automatic shift & Torque Converter kits........




jb
you're really showing your age!!
i had a 3000 rpm stall converter in my old camaro
there, shows my age

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#10 (permalink) Old 06-22-2010, 05:09 PM
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i wish i could get a least 3.000 or 4.000rpm on my car. lol
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#11 (permalink) Old 06-22-2010, 06:26 PM
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Hahaha...that would make a serious launch for sure.
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#12 (permalink) Old 06-22-2010, 07:53 PM
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True, serious launch but still slow for sure hhahaha lol
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#13 (permalink) Old 07-08-2010, 12:52 AM
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FYI a high stall speed torque converter is good if all you are planning to do is 1/4 mile racing. If you are planning to drive it and want more power, remember significant power increases are very expensive. Stock E36s are not very fast but they do handle. Enjoy the handling. For drag racing many other cars are better suited.
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#14 (permalink) Old 07-08-2010, 01:09 AM
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FYI a high stall speed torque converter is good if all you are planning to do is 1/4 mile racing.
Is this based on transmission temp data? Or when the transmission fluid was most recently changed?

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#15 (permalink) Old 07-08-2010, 01:26 PM
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High stall speed converter will allow the engine to reach a higher RPM when brake torquing. This puts the engine in a higher horsepower band so the car will launch harder. Drag cars might have 5-6,000 rpm converters. The down side is that the trans will generate much more heat. As well, because it is "looser" gas mileage will suffer since driving away from a stop sign will require more rpm to get moving. You will notice all new cars have a lock up torque converter so there is no slippage and better gas mileage.
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