Multiplier

[T.F.S.]

Hi,

I recently fitted a HFS3 system, works ok.

I have large 880cc injectors but only use around 50% IDC, as I understand it I need to solder the back of the board to set the multiplier?

At the moment I have the trigger point adjustment all the way anti clockwise and it triggers at about 2-3psi which for me is fine but it seems to jump to around 50% duty cycle straight away on the gauge and stay there through the RPM range

I have misplaced the instructions that came with the kit, I have the 20 page one but its the smaller single page one that explained what pad to solder that I have misplaced, would anyone have an online copy of it so I can read it properly please?

[Richard L]

Which H3 version do you have?

[T.F.S.]

V3.

Bought about 4 months ago, just recently fitted.

[Richard L]

Perfect.

Yes, you have a choice of x1.5 (recommended) and x2.5). The V3 manual can be downloaded at the www.aquamist-direct.com site. (in the HFS3 link)

[T.F.S.]

How accurate is the flow sensor? It shows 75% on the standard map2 at full flow but my jetting would seem to be closer to 1200cc going by the manufacturers ratings (these are not aquamist nozzles)

[Richard L]

The flow sensor has to be calibrated to match your jet and pressure. It is not an absolute device. Any reason for mixing the components just as the jets?

A nozzle flows differently under different pressures and temperatures. Who manufacture your nozzle and what is it rated?

Repeatability is the only criterion you can rely upon.

[T.F.S.]

Thanks, I'll calibtate it today.

I had a coolingmist system with multiple jets, I replaced the system leaving the hoses and nozzles in place.

4x 0.75GPH (90% meth HFS3 system)




1x 5GPH, 1x 12GPH (90% meth HFS3 system)



Pre turbo 1X 1GPH (water only being injected by a separate 250psi coolingmist system because it was spare..)

[Richard L]

I counted 9 jets? There is more than normal.

[T.F.S.]

Only 7 nozzles fitted Richard.

1 pre comp, 4 in turbo, 2 just after turbo.

[srt8-in-largo1]

What sort of testing have you done with all these nozzles? Before and after dyno pulls?

I'm curious if so many nozzles is helping or hurting.