HFS-4 Q&A, application for your engine...

[32Krazy!]

new to the meth application so please bear with me! need to ask a few questions before the g/b ends so my search time is limited

1. the car is a 3.2 litre s/c v6 in a mercedes benz slk32 amg ihi supercharger, (lysolm style)
2. 6- 480cc injectors (moving to 550cc soon) boost runs avg of 17 psi peak 19 psi. what jets would i need for a 70/30 water mix? im wanting to control intake air temps more than higher octane
3. how fast does the tank run out? would a 5 qt setup be enough for a day at the drag strip?
4. of course the ecu is encrypted in german. how is the hfs4 connected to the car via the electronics? i need all the failsafes i can get for protection against failed check valves solenoids ect.
5. i run a dashdaq with zt-2 wideband for datalogging . will this be tied into the hfs4?
6. can you pm me a total with a 5qt tank and enclosure?
7. not sure if it is of any consequence but the i/c for this setup is mounted under the s/c in the engine v. in order to install the nozzle away from the iat sensor i need to remove the s/c flip it and install the jet then reinstall in the engine so jet sizing is critical as its about a 4 hr removal and install.
8. and can you tell me the dimensions of the 1 gal enclosed setup for the mini? i have limited space in my trunk and that looks like it might fit. price also please with blue led and baffles
thanx for any info

[Richard L]

Originally Posted by JumpingJackson

Compatible with DI on Mazdaspeed 6 / 3?

Yes, it will be. The H4 has two dedicated Di inputs, one will work with the MZS3 and MZS6. The other is for VW FSi engines.

I know the MAZADASPEED ECU quite well. It is weird how it switches, firing alternative injector banks between + and -. On the MZS6, you can tap the injector signal before the driver, the injector signal is individually driven.

[JumpingJackson]

*patiently waiting for GB details*

[JumpingJackson]

Also, is the HFS-3 compatible with Mazdaspeed 6? What are the differences between HFS-3 and HFS-4?

[Richard L]

The HFS-4 has an extra input for monitoring the DI's fuel rail pressure, compensate for the final water/methanol flow.

DI engines has a tendency to control and adjust rail pressure constantly depending on load conditions. Factoring in this singal will improve the accuracy of the injectant ratio to fuel flow.

GB has started here : http://www.aquamist.co.uk/vbulletin/...ead.php?t=2161

[maxman]

Does this come with instructions for a BMW N54 (2009 335i)?

[Richard L]

Yes, it does.

The N54 has several popular tunes. Is your 335i standard? We can supply appropriate wiring instruction to each tune.

[maxman]

Originally Posted by Richard L

Yes, it does.
The N54 has several popular tunes. Is your 335i standard? We can supply appropriate wiring instruction to each tune.

I have the Cobb tune installed on my 2009 335i with a Helix front mount intercooler and dual intake.

Originally Posted by maxman

I have the Cobb tune installed on my 2009 335i with a Helix front mount intercooler and dual intake.

Prelim schematics in the link. We will be confirming these schematics are correct and testing the HFS-4 on a 335 this week.

http://howertonengineering.com/2012/...54-schematics/