Re: BMW-335i (E90 N54)
 

Can you tell me a little bit more about the rev3. Is this the same version for Vishnu's PWM system?

If it is I can make a diagram for it. The HFS-4 can work with any one of the N54 piggies.

Re: BMW-335i (E90 N54)
 

Rev 3 is just the newest version of the procede. From what ive been told i would hook up the Red wire to 12V pre crank and green to the PMW in, from your grey cable. What is the difference from this 12v pre crank and the 12v from the power input cable? Do you happen to have detailed instructions for my car specifically? I don't have my procede yet, i'm hoping it will be self explanatory where to connect the green wire. From the user (Green) cable where do i connect the yellow and white wires?

Next question is what computer is smarter. The one you programmed in the Aquamist system or the one Shiv uses in the Procede. Are there benefits of using one letting the procede tell when to inject meth over letting the Aquamist system read all the ECU information from the standard install and just tell the procede when meth is flowing for map switching?

Thanks for your help with all of my questions. I have the Howerton Tank installed in the trunk, power hooked up to the battery, relay wire ran to the glove box area, and meth line ran under the car to the engine bay. I dont have my charge pipe yet but would like to finish up the wiring to the ECU.

Another question. What flow restrictor should I use for this application? I'm intending to use two 1m injectors.

Thanks again. Looking forward to your responses.

Re: BMW-335i (E90 N54)
 

I have just posted (post #3) the HFS4/procede rev3 interfacing wiring diagram.

I will address your questions as soon as I can here.

Re: BMW-335i (E90 N54)
 

Thank you so much for the diagram! Do I need to use a restrictor if i'm going to run two 1mm jets. Do I need to make any changes to the board?

Re: BMW-335i (E90 N54)
 

It is not necessary to use the restrictor if your are running two 1mm jets. It is better to leave some upper ceiling in case you want to increase flow via the controller.

It the circuit is not already pre-configured from your suppler, you need to do the following:

Stand-alone on flash tune:
1. Set the MPS solder link to "2" (2.5bar map sensor).
2. Set the CEL to DR1 to prevent CEL if you are using the on-board boost cut unpon failsafe activation.

Procede Piggy-back:
3. Set the "Threshold" trimmer to 12% (fully counter clockwise).
4. Link "DFS" to disable failsafe activation since Procede takes care of this.

Re: BMW-335i (E90 N54)
 

If you are running Procede, it is better to let it control the water/meth flow and onset of failsafe.

Both HFS4 and Procede reference load as prime flow control from multiple sensors. Procede controls flow from raw sensor signals compared to HFS-4 reads composite Fuel injector signals as well as boost and fuel rail pressure. Both methods are very competent performers.

If you are running a flash tune, let the HFS-4 control the flow and failsafe.

Re: BMW-335i (E90 N54)
 

In the process of installing my HFS-4 kit. Any tips on what wire to tap for the purple "dim" wire indicated by "head light switch" in the diagrams. I would like to skip having to find a good one myself by trial and error. Sweet kit with everything included otherwise.

Re: BMW-335i (E90 N54)
 

The connection for the dimming wire (purple) is in the footwell module. Wiring as follows:
(red arrows - anyone)

Re: BMW-335i (E90 N54)
 

Ok perfect, thanks Richard!

Re: BMW-335i (E90 N54)
 

Let me know if works.