From what I know....what Tekin RS has, is adjustable timing boost while the driver in full throttle. It has the option to adjust the timing boost for like 1 second after the full throttle applied...then the speedo's motor timing adjustment will increase the timing from (lets say) 26.25* to 30* for a short period of time...usually, if running 13.5 17.5 21.5...no full throttle will applly more then 3 seconds or so (like indoor carpet) so that extra 2 seconds of 30* timing will create a hugh advantage over the 26.25* timing motor.

Because of that, it look like TURBO, or BOOST on the straight...or like 2nd gear for NITRO car...

I don't believe the TEKIN actually BOOST the motor like the real car does...it is the electronic programming that INCRASE the timing for that short period of time like 1 second (or 1/2 second) after the full throttle apply, then when the throttle is released, it will go back to normal.

It is all software programming, and may be some hardware modification...

This is what I am understanding about the TEKIN...correct me if I am wrong.

P.S....at the hurricane racing program under USVTA, all TEKIN turbo feature must be OFF. Because of this rule change...GT2, SPX and RS...they are very much the same now. Again, only the TURBO option must be off, ppl can still crank the timing or whatever boost they can call all the way up to the sky, just no TURBO.