E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

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.

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 09-01-2009, 09:01 PM   #21
AdamBath
Registered User
 
Join Date: May 2007
Location: Plano, TX
Posts: 3,086
My Ride: E30
Quote:
Originally Posted by JJR4884 View Post
using an air tool, i only had to hold the driveshaft with a firm grip, it didn't spin at all



meh... for the low end acceleration, the 3.38 is worth it. not to mention, i always drive by sound of the engine, not speed... so keeping it at 2500rpms will keep me at 65ish... i don't mind going a little slower, it will save me from getting an 80 in a 65 ticket



do you have a 6 or 5 speed?

idk i don't enjoy cruising at 80mph.... 3000 rpms sounds a little bit too much for the engine IMO, 2700 tops for me
I've got a 5 speed, right now anything over 72 is over 3k if I remember correctly. With a 3.46 I may be up around 3500-3600, but thats still not that high, at all. These engines are meant to rev double that, and to survive on the autobahn, 3k is nothing.
__________________
AdamBath is offline   Reply With Quote
Old 09-01-2009, 10:25 PM   #22
JJR4884
Registered User
 
Join Date: Oct 2006
Location: Nowhere
Posts: 18,290
My Ride: BMW
ya for 5th gear 3k sounds good for 72mph... i was talking about 6th gear for me at 80
__________________
JJR4884 is offline   Reply With Quote
Old 09-02-2009, 10:17 AM   #23
AdamBath
Registered User
 
Join Date: May 2007
Location: Plano, TX
Posts: 3,086
My Ride: E30
Quote:
Originally Posted by JJR4884 View Post
ya for 5th gear 3k sounds good for 72mph... i was talking about 6th gear for me at 80
Still, 3000 isn't bad at all, IMO. I've got no problems cruising at 80+, I even get decent fuel economy up there.
__________________
AdamBath is offline   Reply With Quote
Old 09-02-2009, 06:11 PM   #24
JJR4884
Registered User
 
Join Date: Oct 2006
Location: Nowhere
Posts: 18,290
My Ride: BMW
my gas mileage hasn't gone down at all, and i've been enjoying the lower end quick shifts and what not

however my cruising speed on the highway has probably decreased on average between 5-10mpg just because I am conscious of my RPMs, which is probably why I am keeping a steady 23 mpg...

win win situation for me, far better accelleration in all gears, and i don't go higher than 70 now because of the RPMs


but you're right, 3000 isn't bad and with a TSE3 it still doesn't drone
__________________
JJR4884 is offline   Reply With Quote
Old 09-03-2009, 05:05 PM   #25
Activ3
Registered User
 
Join Date: Feb 2005
Location: Orlando/Miami
Posts: 6,360
My Ride: gets DRIVEN.
Send a message via AIM to Activ3
I would never swap out my 3.46... and I have a 5spd

Definitely a great mod, and I'd recommend it to anyone looking for a little more grunt down low. As for cruising rpm's.. I do 80mph @ 3800rpm in 5th. We actually just had a meet last night where we were trolling around 95mph for about an hour straight
__________________
-David www.e46nonm.com | My Videos
2000 328i - Custom Turbo tuned by AA

Activ3 is offline   Reply With Quote
Old 09-03-2009, 09:20 PM   #26
SweTurbo
Big Pimpin'
 
Join Date: Nov 2008
Location: Europe
Posts: 2,899
My Ride: 323i -98
fawk yeah , seeing how everything is so overpriced here in sweden i decided to check the swedish-parts-database , and found that diffs aren't in the 1000$ area.

Most diffs here goes fr around 3-4 hundred, (found both a 3.07 and 3.38 for 330$ , to bad i've got body-damage i need to pay for )
SweTurbo is offline   Reply With Quote
Old 09-07-2009, 09:44 AM   #27
JJR4884
Registered User
 
Join Date: Oct 2006
Location: Nowhere
Posts: 18,290
My Ride: BMW
damn thats a lot, however bmw charges $1800 for a non lsd diff, checked up the price on realoem...
so for half that i guess its not too bad...
__________________
JJR4884 is offline   Reply With Quote
Old 09-07-2009, 09:56 AM   #28
JJR4884
Registered User
 
Join Date: Oct 2006
Location: Nowhere
Posts: 18,290
My Ride: BMW
little update after having it for 1 week +

fvcking love it..... 6th gear is quiiiiiiick.... and i love how the shifts are shorter from 0-40.... sounds nice too

I'm waiting to race a few friends just to see how it will pair up with some other cars... one being a 350z with test pipes

__________________
JJR4884 is offline   Reply With Quote
Old 09-07-2009, 02:39 PM   #29
AdamBath
Registered User
 
Join Date: May 2007
Location: Plano, TX
Posts: 3,086
My Ride: E30
Quote:
Originally Posted by JJR4884 View Post
little update after having it for 1 week +

fvcking love it..... 6th gear is quiiiiiiick.... and i love how the shifts are shorter from 0-40.... sounds nice too

I'm waiting to race a few friends just to see how it will pair up with some other cars... one being a 350z with test pipes

I beat a 350z once He grinded 2nd gear
__________________
AdamBath is offline   Reply With Quote
Old 09-07-2009, 05:16 PM   #30
da5mikeY
Registered User
 
Join Date: Jan 2009
Location: Pittsburgh
Posts: 75
My Ride: 330xi
since it came off an automatic, you can obviously put one on an automatic correct
da5mikeY is offline   Reply With Quote
Old 09-08-2009, 10:51 AM   #31
JJR4884
Registered User
 
Join Date: Oct 2006
Location: Nowhere
Posts: 18,290
My Ride: BMW
Quote:
Originally Posted by AdamBath View Post
I beat a 350z once He grinded 2nd gear
lol that poor bastid

Quote:
Originally Posted by da5mikeY View Post
since it came off an automatic, you can obviously put one on an automatic correct
correct, however why would you want to? auto gears are taller as it is, putting a lower-ratio'ed diff would probably do worse for the mpg since you would be so far underneath the powerband in most daily driving...

and if you have an xi, no you can't do it because your rear wheels will be spinning at different speeds than your front wheels
__________________
JJR4884 is offline   Reply With Quote
Old 09-08-2009, 05:37 PM   #32
Kubica
Registered User
 
Join Date: Apr 2008
Location: Boston
Posts: 4,494
My Ride: 2003 325xi
Quote:
Originally Posted by JJR4884 View Post

and if you have an xi, no you can't do it because your rear wheels will be spinning at different speeds than your front wheels
You can do it on an xi- just need to swap the front with the same ratio as the back. I don't know anybody that's tried it- the autos to have taller ratios than manuals.

I heard getting to the front diff would be a major PIA though.
Kubica is offline   Reply With Quote
Old 09-08-2009, 10:35 PM   #33
Baer
Registered User
 
Join Date: Nov 2006
Location: Boston
Posts: 611
My Ride: '01 330i
Nice mod. I installed a 3.38 LSD unit from Diffsonline into my 330i 5speed about 2 1/2 years ago. By far this was my best modification I have made to the car! I am running stock intake and exhaust so I don't have to worry about added noise from the higher rpms. I am pretty much always at 22mpg with mixed city and highway driving.

A friend runs a 3.64 lsd unit in his '05 ZHP 6spd and it is a rocket. I love this gear with the 6spd.
__________________
Traction possible thanks to a Diffsonline 3.38 Limited Slip
Baer is offline   Reply With Quote
Old 09-09-2009, 12:19 AM   #34
JonnyDrivesAlot
Registered User
 
Join Date: Jan 2008
Location: Regina, SK. CND
Posts: 128
My Ride: 04 330i ZHP
Quote:
Originally Posted by Baer View Post
Nice mod. I installed a 3.38 LSD unit from Diffsonline into my 330i 5speed about 2 1/2 years ago. By far this was my best modification I have made to the car!

Ditto

I got mine from the my330i garage ZHP project car acouple years ago.

3:38LSD is still my favorite mod.
__________________

UUC lightened flywheel, stage 1 clutch, CDV delete, 28% tint all around, drop in K&N filter, smoked corners, side markers, LED tails, fogs, headlights, matte black grill, BSW stage 1 & subs, 3:38 LSD, M5 mirrors, Carbon fibre CSL trunk lid, H&R sport cup kit (rolled fenders), Predator orion V2 multi colored LED angel eyes, HAMANN Style CF Front Lip, Technik stage 2 SS Ceramic coated headers, Work VS-XX
JonnyDrivesAlot is offline   Reply With Quote
Old 09-09-2009, 12:27 AM   #35
Jelly335
Registered User
 
Join Date: Dec 2006
Location: L.I. NY/ CF FL
Posts: 5,541
My Ride: 2001 bmw 330I
Send a message via AIM to Jelly335
im debating which one to get a 3.38 or a 3.46. i have a 5speed so thats what im a lil worried n im on the highway alot to get to werk. i can get the 3.46 for 200 and the 3.38 for 275. which one should i go for?
__________________

E46 330i retired
E92 335 current
<3 my one wheel wonder
http://www.cardomain.com/ride/2269710/1
-Jeremy
Jelly335 is offline   Reply With Quote
Old 09-09-2009, 07:52 AM   #36
AdamBath
Registered User
 
Join Date: May 2007
Location: Plano, TX
Posts: 3,086
My Ride: E30
Quote:
Originally Posted by JELBMW330I View Post
im debating which one to get a 3.38 or a 3.46. i have a 5speed so thats what im a lil worried n im on the highway alot to get to werk. i can get the 3.46 for 200 and the 3.38 for 275. which one should i go for?
The one you can get cheapest, there's no reason to "debate" anything, they are so close in ratio you'll never notice the difference.
__________________
AdamBath is offline   Reply With Quote
Old 09-09-2009, 08:12 AM   #37
vminev
Registered User
 
Join Date: Nov 2007
Location: Leesburg VA
Posts: 580
My Ride: 325ci
Kpeng did this on an auto. I believe he used a diff from an x3.
__________________
vminev is offline   Reply With Quote
Old 09-09-2009, 08:31 AM   #38
kraimer
Registered User
 
Join Date: Jul 2008
Location: CT
Posts: 173
My Ride: 04 330Ci, 00 323it
Send a message via AIM to kraimer
good job JJR!!

I have an S3.62 with all needed "accessories" for a swap (axles, carrier, and a sway bar). I honestly cannot wait to put it in; but I was wondering if anyone has done this and regretted doing so in a 6spd? (not that I will be talked out of it, I just want to see some responses)
kraimer is offline   Reply With Quote
Old 09-10-2009, 01:24 PM   #39
Rooz
Registered User
 
Join Date: Apr 2006
Location: Charlotte, NC
Posts: 984
My Ride: 2003 M5
Quote:
Originally Posted by JJR4884 View Post
Oh and please check out www.car-part.com
This mod costs me a hundred bucks Found a local place that had the diff, had 70k miles on it, and wanted $100... When we opened up the diff, the gears still looked brand new. Coming out of an automatic, it would be pretty difficult to fvck up a differential so 70k for that is still nothing.



J
The best I'm finding it $240 + $30 shipped... am i getting ripped off?
__________________


Quote:
Originally Posted by Gregg
Umnitza now provides a mechanic to install all parts ordered right in the box! It's their new "Total customer service program" that will eliminate all the haters and keep incompetents from breaking **** and blaming the vendor! When you are all set simply call INS and they will pick him up free of charge.
VIEW MOD LIST & PICS
Rooz is offline   Reply With Quote
Old 09-10-2009, 02:36 PM   #40
JJR4884
Registered User
 
Join Date: Oct 2006
Location: Nowhere
Posts: 18,290
My Ride: BMW
Quote:
Originally Posted by Rooz View Post
The best I'm finding it $240 + $30 shipped... am i getting ripped off?
go to www.car-part.com and see if there are any local junk yards that have them, if so call them up.

Usual prices can be between 250 and 350, so if yours is say 50k miles, its a normal price....
__________________
JJR4884 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Censor is OFF





All times are GMT -5. The time now is 11:31 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use