Not true. SGP orginally tuned my FCON and then Sam from GTM retuned it.

 

yeah but only when going WOT

everything part throttle, it's a piggyback


+1
another HKS dealer can tune it and create a brand new tune, but won't have access to the previous tune without the password

 

So basicly operates like the UTEC, but with more resolution?

EDIT: nevermind I just saw above post.

 

he was talking about the UTEC, not the iS

 

And unless the original tune was password protected the next tuner will have access. Regardless if it is protected or not, most good tuners would start from scratch.

 

The UTEC is basically a piggyback.

The iS is also a piggyback, but runs a higher resolution than the UTEC, basically giving a finer degree of control. It gives you full control of fuel and timing, and runs with A/F feed back. It would work fine for your power goals. Guys are running the UTEC with more power so the iS will cope just fine.
The actual unit runs around 450 bucks i believe, and then all you need is the harness specific for your car, which i think is another 450 bucks. That's all you need.
By user tuneable, i mean you can't tune it yourself, but any HKS certified dealer can tune it. If you get a good tune done, you won't have to get it retuned anyway.

The iS has a whole load of functions that people don't know about. The problem is it's not in your face as much as the UTEC, plus the HKS USA has crap marketing, not to mention a crap website. If you got to www.hks-power.co.jp you will find loads of information about this unit and all it's functions. What i do is copy and paste in google translate and try and decipher the translation it makes. You miss out a lot but you get the jist of what there trying to say.

 

Just reading a bit more about the iS. Apparently the latest revised versions can be hooked up to a knock amp, and with some wiring trickery can control NVCS, which i believe is nissans variable valve timing.
Also, if you've got a 2 din monitor in your dash with AV input, you can use this to monitor up to 18 channels, so no more need for gauges!

 

So does IS has it's own Fuel and Timing table that it uses (I mean not jut +/- of the ECU like the emanage)?



At part throttle Utec leave the control to the ECU (Only timing though) but only if you are not on boost. Once you hit boost/load (In my case) 0 psi it don't matter if you are 30% TPS or 100%TPS coz Utec will use its own Timing and fuel table regardless of ECU input.

Edit:
The problem with Utec when just cruising is the transition between Utec and ECU. At part throttle, you may hit boost and going in and out of boost give Utec that jerky feeling. when Utec takes control, there are sometimes big gap between the ECU timing and what Utec want to run also there is a big drop in A/F, hence the car jerk.

 

This i don't know. You'll have to ask someone who has actually tuned one. Again, most of my info is from HKS Japan, and some crappy translations from google. If someone spoke Japanese here, that would be helpful.

 

Wow i just realised you guys pay around 1300 bucks for the unit and harness. It's definitely cheaper over here.
The UTEC still sets you back about a grand though.

 

Here IS cost around $1500-$1900 tune/Installed, Utec is around $1200-$1400 tuned/Installed.

 

Yeah i realised. But still, i think your also getting a better piece of kit, and more functions.
Also, i can get the kit and harness for 900 bucks shipped here

 

yeah IMO the iS sounds like a better unit if you're ok with it being locked and only tuned by an HKS dealer

 

something we dont have here in hawaii

 

There's an untapped market right there!
dibs!

 

lol yeah really
well, I know some tuners have made visits to other states before, but you'd probably have to foot the bill jk

 

does the F-Con iS have full control over the injectors 100% of the time??

 

The Vpro seems like a really nice unit but I havent had any issues with utec, so for the time being, i see no need to switch. plus i like the selectable map switch with the utec. i have a map up to 15 psi, one up to18psi, and then i'll probably do a c-16 map in the spring. i usually rock the 15psi map on the street but it will be nice to put some c-16 in the tank and push a button that optimizes the fuel and ignition tables for those days when i feel like huntin supras

 

the vpro can have up to 4 selectable maps

 

How do you switch between maps?