[Unichip Jack]

Thanks again for the questions and pm’s and also thanks to Dynotronics1 and seven… kind words are always appreciated.

Before hitting the questions since my last post, we're running a January special for FT86 Club members in the Vendor section… http://www.ft86club.com/forums/showthread.php?t=24864&page=3

On to the questions… just like last time, red is a post quote and black is my answer…

Since our car requires premium wouldn’t we all fall under premium? Premium is recommended, but the car automatically pulls ignition timing if you run something lower. You can’t make as much power without the octane rating and the ignition timing it allows, but you can drive it that way. We make the lower octane maps to give you some flexibility.

Does the "stock tune" take away that torque dip? As posted somewhere previously, the “torque dip” is a result of engine internal design not tuning. The only thing tuning can do is move the dip somewhere else.

There’s a long discussion here, but the best way to think of it is to look at the torque curve… if you permit me some artistic license, the torque curve looks like two hills with a valley at either end and another in the center. Each of the hills is a cam profile… low speed on the left and high speed on the right. The peak of each hill is the maximum breathing that cam can provide… either side of the peak the cam doesn’t breath as well and that will only change by reprofiling the cam's lift and/or duration - you can only change the hill shape by reprofiling the cam. Changing the VVTi timing just moves the peak left or right... the problem is if you move, for example, the high speed peak left to fill in the valley between the two peaks, the valley to the right of the high speed peak gets deeper very quickly and the engine falls on it's face.

The plug and play kit does *not* include the map download cable which is required to get additional maps from your database on to the Unichip. Please confirm, thanks. Correct… the cable, maps, and SW are normally a onetime cost of $35… we are throwing them in at no cost for anybody that buys the Flux version of the kit in January.

If they have a 91 and 93 map, as well as a lower grade fuel map (which I believe he said they did, for each of the basic bolt ons, I can't think of anything extra, not currently at least. I don't see a "92" map being that much of a difference for people to want one either. One point of octane rating tends to be pretty insignificant and is generally well within the “noise” level of the other variables like individual vehicle misfire sensitivity, air temperature, density altitude, etc… we build our premium maps on 92 octane and they cover both 91 and 93 nicely.

Will the Unichip be able to access more advanced things like the VVTi system at some point? We’ve been doing variable cam timing changes since way before VVTi came into being and it’s no issue to do on the FR-S. The Standard kit isn’t set up to do it (for reasons posted previously in this thread) but it can certainly changed with a simple wiring change and some reprogramming.

Have a grear New Year's!