Congrats Speedracer. I am wondering if this KIT were to be installed with an aftermarket Plenum (ie Crawford, Kinetix, APS), would we still need the 2 auxillary injectors? How would it affect the mixture, if the injectors were installed with the aftermarket plenum?

 

Just keep an eye on your spark plugs...since the SC's tend to do more ring and piston damage...rather than rod damage.

Have fun!

 

Regardless of Plenum , CATS etc. if you "removed the Aux injectors" you would need to provide extra fuel by some other means (ie. larger main injector + reflash, larger main injectors + piggyback, or DFMU=yuck ). The aux injectors are just HKS's alternative method for fueling under boost. With an APS Plenum
it is un certain how distribution would be effected.

Word of advise , if you want a low boost , reliable system on stock internals and you intend to "leave it alone" , then this may be the kit for you. However; if you want to upgrade, tune and shoot for bigger gains , this setup is far from ideal and costs too much as a basis.

 

You will still need the extra injectors to go with the extra air from the SC. Aftermarket plenum would probably lean out the front cylinders a little, although I'm not certain by how much.

 

The aux injectors are mandatory, no 2 ways around it, regardless of the plenum you run

Glad you got it installed man...I'd love to take a cruise up and have you take me for a ride on day BTW, did the thermostat arrive in time?

I agree that this is a perfect kit for those looking for an out of the box solution, as opposed to a more tuner oriented setup. Considering the completeness of the kit and it's fit and finish, it is more than fairly priced.

 

I believe the Box is tunable. From what I understand it is a F-Con S which can be tuned by your HKS Pro Dealers using a laptop with the F-Con software. If you wanted to tune it yourself you could swap out the F-CON S for F-CON V Pro which uses the same harness and use either the laptop or HKS Navigator to tune it.

 

Congrats!!!!!!!!!!
video plz

 

F Con S can use the F Con Navigator...not sure of the F Con Pro can. Biggest hurdle of course is finding a Pro dealer (its changing but it's a slow process) and then finding one who knows the F Con (there are not many out there)

 

Interesting ... do S/Cs cause more ring and piston damage than turbos?

And if that is the cause, why is that? I thought both just feed compressed air into the engine?

Just curious.

 

I think you have it wrong way round.

F-CON S - No navigator only laptop
F-CON SZ - Navigator or Laptop
F-CON V PRO - Navigator or Laptop

I believe the F-CON S is released in the US instead of the JDM version SZ beacuse they feel to many Z owners will tinker with the settings. The odd thing is that according to the HKS Japan website (even though it conradicts itself between the info and the heading) you can change the maps within the unit.

LINK

I got a feeling that the navigator will only show stats for the F-CON S but able to tune and monitor the SZ or V PRO.

PS: I would be a happy chappy if I was wrong

 

ah you might be right..I was thinking FCON SZ

 

So even though this is an out of box solution, how can we extract the 450whp hks says its capable of? What other mods can we do?

 

I literally just got off the phone with hksusa and they told me otherwise....that they've been trying to gain more power out of the kit but did not think there would be any pulley upgrades, etc... who'd you talk to? man, I hope your info is right!

 

For what it's worth, the F-CON S box is completely locked down and can not be reprogrammed even by an HKS pro dealer. Only HKSUSA directly can do any type of re-programming.

 

I spoke to them when the kit was just released and this is what I was told by tech support.

Now this may of been a marketing ploy who knows but what I can tell you is that there is some room for improvement in the pulley size. I have calculated the amount of reduction that the pulley can drop in size while staying within the warrantee bracket of impeller/shaft speed but have no idea what gains this will produce. Without checking my spreadsheet from memory a 3-4mm drop in pulley size is possible on this rotrex unit.

As always this kits fuel system and tuning will need to be modified for proper tuning.

My first step would be a cam swap with more duration so that more air gets in with again proper tuning.

Michael

 

I can't wait until someone upgrades the pulleys, etc to see if this kit can do a little more...