Some more info for those who are interested. The unit came shipped in 3 boxes. Shipping weight was 65lbs. Everything was meticulously packaged and labelled. Everything down to the last washer is included for installation, and the installation instructions are reasonably clear, but could IMHO be a little more complete. The Fcon ECU comes completely harnessed and this end of things is completely plug and play. Still, this is not what I would consider a complete "bolt-on" installation.

Several factory parts in the engine bay have to be physically modified and relocated, although all the relocation hardware is included. One of the flow lines for the A/C has to be re-routed. The fuel system upgrade is essentially an entire auxillary fuel system. It's not just like dropping in bigger injectors into the stock position. It involves a new fuel pump in place of the stock one, but requires you to dis-assemble the stock unit and use some of the parts with the new unit provided by HKS. The extra injectors themselves are situated inside the intake manifold with an auxillary fuel line feeding them. Basically, there is an adaptor that fits between the throttle body and the plenum through which the auxillary fuel line enters the plenum and connects to the injector assembly which then physically sits inside the plenum towards the rear firing forward and outwards at about 45 degrees. It really seems designed to work with the geometry of the stock plenum and an aftermarket plenum may actually upset the fuel dispersion characteristics of the system. There is a bit of wiring that has to be spliced and diced to connect the auxillary fuel sytem to the ECU. The fcon box installs neatly next to the stock ECU and there is also another S/C "controller unit harnessed into all this which HKS recommends installing under the passenger seat. Personally I think it could be placed into the NAV space (if you don't have NAV) and it would fit nicely below a set of boost, A/F, and fuel pressure guages. I'm taking the system down to XXtuning in Wethersfield, CT tomorrow for them to check it out. I've never been there before but they seem like a high end shop and appear to have done some nice project cars. If they look like they are up to the task, I will probably give it to them to install as the fueling system does scare me a little. If they don't seem up to the task, I will take the plunge and do the install myself.

The installation manual also states that the fuel system upgrades are not adequate if you alter the exhaust manifold and/or catalytic converters. They also do recommend upgraded connecting rods if you plan any serious track time with the car. In speaking with HKS, however,they have had this system on a Z with stock internals for nearly one year for testing without any reliability issues.

 

any pics Would be interested in seeing pics of the components. TIA

 

go here: www.hksusa.com. There are some decent pics of the components

 

Thanks for the info

 

Interesting ... from reading on this forum I gathered that upgrading the plenum was a necessity with F/I since the front 2 cylinders gets less air.

Thanks for the info, I was really set on changing my stock plenum to a Crawford or the upcoming APS plenum but your analysis intrigues me.

Can it be confirmed that an upgraded plenum is not recommended for this S/C?

 

I'll say this on the plenum issue (my car is NA). I had one in the car...made a difference in noise, and pulled a bit better up top. Ended up removing it, and car felt much better overall, especially in the lower rpm ranges.

I still have not ever had a car here with the crawford, though I'd love to see how it performed