Z4-forum.com

Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.

Z4 M40i incoming, looking for mods.

Discussing the current generation Z4
Post Reply
Jeroen
Newbie
Newbie
Posts: 3
Joined: Fri Apr 19, 2013 9:28 pm

Z4 M40i incoming, looking for mods.

Post by Jeroen » Tue Feb 04, 2025 6:54 pm

My new toy is arriving soon and I want to start to modify it.
I would love to hear experience from you guys and any suggestions are very welcome.
My goal is to have a quick and controlable car for fast roadtrips with nice turnin feel en a few trackdays per year.

Engine
-femto unlock
-mhd stage 1 400hp-ish?
-air intake, which one?
-downpipe 200cell
-midpipe delete
-mhd stage 2 460-480hp-ish?

gearbox
-xhp software

suspension
-front upper brace
anything else?
- which coilover set for example? (Not to go low)

wheels
It comes with 19inch 799m wheels, but I gues they are heavy. Any lighter/lightweight wheels recommended?
If 18inch will improve the drivebility, please lett me know.

brakes
any recommendes mods? more bite from brakepads?

Anything else I need? :)
Top
User avatar
B21
Lifer
Lifer
Posts: 7044
Joined: Tue Oct 05, 2021 7:15 pm
Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia

Z4 M40i incoming, looking for mods.

Post by B21 » Tue Feb 04, 2025 7:07 pm

welcome..I assume its second hand version?
“We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard”….
One of 258 Atacama Yellow 35is…165 modifications and updates…and counting.. :tumbleweed:
Top
Jeroen
Newbie
Newbie
Posts: 3
Joined: Fri Apr 19, 2013 9:28 pm

Z4 M40i incoming, looking for mods.

Post by Jeroen » Tue Feb 04, 2025 7:08 pm

Yes, build 2022, but locked ecu.
And thanks, but I have been here for some time already. :)
Top
User avatar
B21
Lifer
Lifer
Posts: 7044
Joined: Tue Oct 05, 2021 7:15 pm
Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia

Z4 M40i incoming, looking for mods.

Post by B21 » Tue Feb 04, 2025 7:13 pm

Jeroen wrote: ↑Tue Feb 04, 2025 7:08 pm Yes, build 2022, but locked ecu.
And thanks, but I have been here for some time already. :)
When I looked at it (M40i) ..the obvious things are the MHD stage 2 tune ..I think the FEMTO issued arrived later?

Particulate filter removal

xHP maybe

Based on other experience stock intake should be fine

xHP worked well on the DCT whaqt it would do on a 3rd generation XF 8HP box not sure

Braces I think would be a waste of time

IMHO
“We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard”….
One of 258 Atacama Yellow 35is…165 modifications and updates…and counting.. :tumbleweed:
Top
Online
User avatar
Mr Tidy
Legend
Legend
Posts: 26015
Joined: Wed Jul 02, 2014 12:18 pm
Location: North West Surrey

Z4 M40i incoming, looking for mods.

Post by Mr Tidy » Tue Feb 04, 2025 9:30 pm

Welcome to the forum and good luck with your modifications. :thumbsup:

Don't forget we like to see photos!
Coupes because stunning!
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
Gone - Montego Blue
Gone - Ruby Black
Top
tweeky687
Newbie
Newbie
Posts: 13
Joined: Fri Feb 09, 2024 2:31 am
Location: Halifax

Z4 M40i incoming, looking for mods.

Post by tweeky687 » Tue Feb 04, 2025 10:41 pm

What about the AC Schnitzer engine upgrade

https://preisliste.ac-schnitzer.de/acs_ ... D_NR=28232
Current cars M340i and a Caterham 7
Top
Jeroen
Newbie
Newbie
Posts: 3
Joined: Fri Apr 19, 2013 9:28 pm

Z4 M40i incoming, looking for mods.

Post by Jeroen » Thu Feb 06, 2025 2:41 pm

The ACS is a tuning box only for cars without extra mods?
The ACS price of almost 5k is crazy.

I like to "build" it myself with the mhd route and I think I will be done at 3k with femto, mhd, downpipe and maybe the midpipe + intake.
Top
Post Reply

Return to “G29 Z4 Discussion”