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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 04-15-2010, 11:15 AM   #1
AndrewBall
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Upgraded automatic transmissons (valve bodies, ect...)

I saw an older thread but i have a few others questions.

One guy did the valve body and torque converter upgrade from IPT and he said he loves it.

I am more interested in the Valve bodies and such for my auto. I just want some quicker shifts, a little more reaction out of it. I dont think the TC upgrade is for me. But in the same breath. my family own a machine shop. how do they modify these valve bodies? I mean if its just machining. I could likely do it myself.

I just would love to be able to get my transmission to shift a bit faster and be a little more responsive to throttle input. My friend had a modded trans in his IS300 and it was bad ass.

has anyone besides the one guy done the Valve body or any of the other upgrades available?

Basically who here has a modified automatic trans in their car? What did you do, and how do you like it.
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Old 04-16-2010, 07:38 AM   #2
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I havn't done anything to my 330i, but with my last car ('99 Grand Prix) I did some small work in the trans to firm up the shifts. I guess it was just a 'shift-kit', consisting of springs and shims. But I have seen some of the guys on TV actually drill new holes in the valve body for fluid to pass through.

But I've never seen anyone selling a 'shift-kit'.
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Old 04-16-2010, 01:38 PM   #3
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Quote:
Originally Posted by Drewfus2101 View Post
I havn't done anything to my 330i, but with my last car ('99 Grand Prix) I did some small work in the trans to firm up the shifts. I guess it was just a 'shift-kit', consisting of springs and shims. But I have seen some of the guys on TV actually drill new holes in the valve body for fluid to pass through.

But I've never seen anyone selling a 'shift-kit'.
http://www.importperformancetrans.co...duct_list&c=89

they have a few options one looks like springs, shims and o-rings and the others are upgraded valve bodies.
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Old 06-21-2010, 03:50 AM   #4
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anymore input?
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Old 06-21-2010, 04:19 AM   #5
alibusoul
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this is interesting.... I dont understand why our autos are so horrible.. Drove an auto Audi A3 a while back, that thing shifted like it was on crack! Precise and very VERY quickly
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Old 06-21-2010, 04:42 AM   #6
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anymore input?
Dinan has a software modification for the tranny. That is all I have seen.

http://www.dinancars.com/store/home.php?cat=680
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Old 06-21-2010, 04:45 AM   #7
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this is interesting.... I dont understand why our autos are so horrible.. Drove an auto Audi A3 a while back, that thing shifted like it was on crack! Precise and very VERY quickly
The Audi A3 "automatic" tranny is the DSG, a manual tranny hooked up to two computer controlled clutches controlled by software. That is the ideal automatic.
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Old 06-21-2010, 05:28 AM   #8
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The Audi A3 "automatic" tranny is the DSG, a manual tranny hooked up to two computer controlled clutches controlled by software. That is the ideal automatic.
It's not just the Audis though, modern automatics in general are very good. The 335iA I drove not too long ago was easily the best auto I've ever driven... revmatches the down shifts, and has really quick upshifts (especially at WOT).
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Old 06-26-2010, 03:09 PM   #9
Jim Murphy
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Dinan has a software modification for the tranny. That is all I have seen.

http://www.dinancars.com/store/home.php?cat=680
I have this software installed in mine and sometimes the tranny gets confused and won't make upshifts when I ease off the gas pedal. Because it is random the Dinan dealer can't find the problem so I am stuck with it.

Jim
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Old 06-28-2010, 03:42 AM   #10
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You've a ZF Transmission ?
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Old 06-28-2010, 01:24 PM   #11
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You've a ZF Transmission ?
Which poster are you asking this of?

Jim
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Old 06-29-2010, 04:08 PM   #12
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You Jim
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