Here's another hfs-6 installation:
The car is a stage 2 04 sti. We put on some parts a few weeks ago and tuned it on 91. Last week the car came in for the HFS-6 and I got to work.
Here's my nice shiny table of nice shiny parts:
Since this car has the stock turbo and is using a fairly small tank, I left the pump at 120psi, went with a single 1mm jet, and put a 0.9mm restrictor in the flow unit:
So anyway to install these things I tend to tear apart most of the interior:
Which left me with this pile of stuff:
This installation uses the stock STi intercooler spray tank, which is about 1 gallon. I mounted the pump to this flat piece of aluminum, which has tapped holes and bolts right to the chassis:
I wanted to tuck the pump in behind the tank, but I couldn't come up with a good way to do it and keep the pump inlet low enough to prevent priming issues.
For the level sensor I soldered the aquamist connector to the stock float:
On GDs, I like to run the meth line up the driver's side with the fuel rails since there are clips to hold it in place:
The wiring to the pump and tank goes up the passenger side since I'm putting the control unit in the glove box, and there is also a convenient place to route the wiring.
It was also nice that a previous owner had cut a hole into his glove box at some point.
It was not nice that someone had done this to the ECU harness:
Some soldering and electrical tape fixed things up:
In the engine bay it was a little tough mounting the flow control unit, but I ended up doing pretty much the same thing as the last time:
Here's the jet in the intercooler:
Here's the control unit in the glove box:
Here's the gauge:
And hey, everything worked on the first try:
I put everything back together and cleaned up the trunk area:
And then it was time for tuning:
Final numbers were 350 hp and 400 lb-ft at the wheelsl.