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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old 05-07-2005, 06:34 AM
ChadSWA737 ChadSWA737 is offline
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Location: Maryland
Join Date: Apr 2004
Posts: 47
Mein Auto: 2005 330i ZHP
ZHP Steptronic question (new to forum)

Hello all.
I purchased a 2005 ZHP Steptronic just under a month ago. Absolutely love the car!! I traded my old 2000 328i in and what a difference.

I have been reading and searching, however haven't come up with very much concerning the ZHP option along with the Steptronic. I know I know, "abomination" don't flame me.
(got the car for $7,500 below MSRP and have a manual supercharged Miata for when the manual mood strikes)

Anyway, has anyone been able to find out "officially" what is different about the ZHP Step and the ZHP Manual? Other than the obvious "its an automatic". I have read that the final drive is different on the Step ZHP as apposed to the manual ZHP, etc., but is this conjecture or fact? Where can I find the official BMW stats on this setup?

Is the final drive same as normal (non ZHP) steptronic or is it not?
Do I have the lightened flywheel?
Do I have the raised redline?
etc. etc.

The reason I ask this is that my car doesn't seem to shift (WOT) at the +300 rpm mark. It rather shifts before the three hatch marks. Seems to me that the Steptronic is not taking advantage of the supposedly higher redline. If this is the case I am a bit disappointed.

Has anyone used the Dinan Tranny software? Is it worth it to get rid of the Step DBW LAG?
Any ZHP Steptronic owners that can pipe in also?

I appreciate all the helpful info.


Last edited by ChadSWA737; 05-07-2005 at 06:38 AM.
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Old 05-07-2005, 06:50 AM
RaceTripper's Avatar
RaceTripper RaceTripper is offline
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Location: US
Join Date: Apr 2002
Posts: 1,652
Mein Auto: 09 MINI JCW
Originally Posted by ChadSWA737

Has anyone used the Dinan Tranny software? Is it worth it to get rid of the Step DBW LAG?...
I had the Dinan tranny software on my 530i step. It helps somewhat, but not a lot. BTW: to get the tranny software you have to have the engine software first, which brings the cost to about $800. In hindsight I don't think it's worth it.

Lesson learned: if you want the response of a manual, get a manual. QED.
2011 Subaru STi 4DR
2015 Subaru Forester 2.5i Touring

Last edited by RaceTripper; 05-07-2005 at 06:56 AM.
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