BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Hi Richard,

I've emailed you about step two of the installation and haven't heard from you since

Recall: I purchased a new HFS4 v3.1 kit from you, you emailed me the step 1, which is moving those jumper to x2.5 IDC pre scaler. Been emailing you about step 2, which I assume is cutting 3 and jump 2 for MAP sensor(cut 3.5 bar, connect 2.5 bar)?

I have a 2011 335i N55 btw...

Joey

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Joey,

I just checked all my in boxes, no email form you, if the email address begins with joey....

Can you pm me the date or your email address, I have to make sure it is not arrested by the spam filter. I always answer my emails within a few days.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Send you an email via the forum.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

got it this time, I will reply.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Still haven't got your reply.... I assume you lost me again.

Why don't we talk here? Step one is to set the IDC jumper to x2.5.

Whats next step?

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

I will talk here from now and stop emailing me.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

OK, lets start from the beginning so we can do it properly:

1. the power?
2. Tuning box or standard?

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

1. 2011 BMW 335i with N55 engine, non electronic wastegate

2. Max boost 21 psi (factory 2.5 bar MAP sensor) across the mid range (3000 to 5000 or less), trying to raise it at the redline so I get more "HP" instead of high torque only. still tuning it

3. Tuning box or standard? I'm using Cobb ATR

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Here is diagram for the HFS4-v3.1. Please check beofere moving on.

http://www.aquamist.co.uk/HFS4/wirin...-N55-N_EWG.gif

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Yup this is the sheet we used for installation.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Um whats next?

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

bump, where are you when i need you rich lol

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Do the purging and priming as instructed in the user manual.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

That's done. Anything else on the board? Like the MAP sensor?

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Good. Map sensor can be tested by moving the TRIG jumper to MPS later on.

Give me an update what you have done so far, such as system prime, purge and TST tests on page 11.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

On top of my head, got it all setup (wiring, purging, IDC jumper, gauage scale to 100% which is one bar away from full bar)

Running two 1mm nozzles, both atomized well. Was wondering if theres a restricter inside already or do I need restricter? Boost are target to max 21 psi mid range so far because of the 2.5 bar sensor, redline will drop to 15 psi or less.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Enjoy exploring the system for best performance. HFS4 has lots of options.
Restrictor is unnecessary.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

I want to test the MAP sensor now, what should I do?

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Hi Joey

I have recently jumped the bootmod3 ship and never got my JB4 to run properly so thinking of going the same way as you.

Did you finish your installation? How does it work - please share :)

- Niels

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Move the IDC jumper to MPS, let me know it it triggers the system.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

I have an E92 N55.. not F series, I wish bootmod3 supports E series :(

Yes, I think my system is all ready to go, still haven't hooked up the light switch though.

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

Yes it does! I got it all set now.

Tuning wise: I run a roughly 30% methanol, how does P/I-R affect the flow characteristic? P (fully counter clockwise) vs P/IR (50/50) vs I-R (fully clockwise)?

Also for a 30% mix, should I lower the GAIN (turn it counter clockwise)?

Re: BMW Early N55 HFS4 v3.1 installation (unfinished)
 

The default position should work well unless you want to experiment.