i'm definetly anxious! It's almost ready for a test drive, just need to bleed the clutch, install the power steering line (it had to be custom made and i don't want to run the pump dry) and i have to rewire the solstice pedal. right now i'm using the corvette pedal assembly for the throttle-by-wire, but I want to use the solstice one since the pedal itself bolts right up (obviously). in order to adapt the solstice pedal to work i believe i have to do the following:

1) the corvette pedal has 3 variable resistors, so the throttle-by-wire module has three inputs. the solstice pedal has 2 variable resistors so i'll be using one of them twice to come up with the third for the module.

2) the variable resistors in the corvette pedal increase as the pedal is depressed whereas the solstice pedal decreases. so i need to swap two sets of wires to reverse the logic.

3) i have to add two inline variable resistors to attain the offset that the corvette pedal has as well as to use for 'calibrating' the throttle position. this may be able to be done with a GM scan tool (there is a calibration procedure for this) but i'm not sure the ranges on the solstice resistors is within the tolerance of the throttle module.

i'll know if this works this weekend when i try it. this all may not be needed for the LS2 swaps as all LS2's are throttle-by-wire to begin with and the pedals may be interchangeable from an LS2 car to the solstice with the generic calibration procedure.

The other things needed to add the throttle-by-wire are:

1) reprogram the PCM to add ETC (Electronic Throttle Control). I believe this involves reprogramming it with a VIN from a corvette. Speartech programmed my PCM, so if anyone needs it done, contact John.

2) get a TAC (Throttle Actuator Control) module from a C5 corvette

3) get a throttle-by-wire throttle body from a C5 corvette

4) add the 2 communication wires between the TAC module and the PCM.

5) add the 6 wires for the new TPS (corvettes have a different TPS than F-bodies)

6) add the 2 wires for the throttle body motor control

7) get corvette throttle pedal or convert the solstice pedal (see above, more to come)

8) add the wiring from the TAC module to the pedal (purchased harness from eficonnection.com)

9) add the wiring from the TAC module to the dash (for B+, GND, Cruise lines, etc.), basic pigtail harness from eficonnection.com

Wow, this is a bit long, if anyone has questions just let me know, I hope this helps eliminate the throttle-by-wire mysteries, i think it's a great way to go as it eliminates the need for the throttle cables and the cruise module, and looks clean. I'll include more details when I get time to put together the schematics for everything.

later,
adam