Best way to control single turbo and meth injection.

BloodyZ4

Private
Mar 17, 2021
25
9
0
Germany
Ride
Z4 35i DCT
I'm planning going single with my Z4 early next year.
This will be the setup:
  1. Speedtech bottom mount kit with Garret G35-900
  2. B58 Coils
  3. PFS POD
  4. Walbro 535
  5. Meth Injection
Since there is no E85 here I plan on running only 102RON + Meth.

Now I'm not sure what's the best way to control the setup.
  • JB4 with their Meth Kit and BEF
  • MHD Flash only with external boost controller and an aquamist Kit
  • MHD + Reflex with it passing boost control to the DME via Can-bus and it controlling the meth with aquamist hardware.

I think I would prefer the last option.
JB4 claims to have great safeties but don`t know if its just old tech at this point?

What`s your take?
 
Last edited:

Torgus

Colonel
Nov 6, 2016
2,408
1,926
0
Boston
Ride
ACF 6466 E92 + METH
  • MHD + Reflex with it passing boost control to the DME via Can-bus and it controlling the meth with aquamist hardware.

This is my vote. The AM hardware has all the safeties you need. This is what I will be doing but add reflex controlling PI as well.
 
  • Like
Reactions: BloodyZ4

Slowagon54

Corporal
Aug 21, 2020
174
71
0
Is the Meth for fueling or for cooling? If there is no E85 you can also put a jug of Bioethanol E96 or E100 to your gas...
 

BloodyZ4

Private
Mar 17, 2021
25
9
0
Germany
Ride
Z4 35i DCT
I will be using it for fueling and cooling. Gonna go with the Aquamist direct port setup and spray around 1400cc of meth.
Meth in my opinion has the advantage that I only burn through it when I`m doing a pull and not when cruising around.


This is my vote. The AM hardware has all the safeties you need. This is what I will be doing but add reflex controlling PI as well.
I was just thinking maybe to avoid two external controllers and go with JB4 but it is just too dated I guess.
Reflex + Aquamist is just hard to beat.
I wonder if its possible to pass the meth flow from the aquamist controller to the Reflex, so the car goes into limp mode if anything goes wrong, instead of just the aquamist controller opening the wastegate? Or even maybe disregard the Aquamist controller and have the reflex read the flow sensor directly and control everything?@[email protected]
 

Slowagon54

Corporal
Aug 21, 2020
174
71
0
I see. You may check wengineering from germany.

Or try the Srage 4 controller from snow performance.
 

BloodyZ4

Private
Mar 17, 2021
25
9
0
Germany
Ride
Z4 35i DCT
Looks interesting, also has a flow sensor and failsafes but only dual nozzle CP injection.
I`m pretty much set on the Aquamist HFS4 kit, it is superior in every way and direct port is just too sexy :)
 

MrBlah

Specialist
Aug 31, 2019
62
13
0
Ride
135i, 335i, x5d, r53
Jb4 works well on my track car, on track it burns 1 gallon every 20 minutes