What did you guys do for the throttle cable? It looks like my Miata one will do the trick, but when I first tried it I didn't get full travel of the throttle body. Suggestions.....

 

Can you move the cable mounting hole on the throttle body closer to the throttle body pivot?

 

The stocker on the NB at least is adjustable. When I first installed mine, I was down on power. I looked at HPtuners at the TPS voltage and noticed it wasn't going to 4.5 volts when the pedal was down so I manually adjusted the cable to take out a bit of slack to allow the TB blade to open all the way.

I had to make an adapter to mount the stock Miata throttle cable mount to the LS1 TB. The stocker had bolt mounts North South I think and the LS has East West mounts (or vice versa).

 

stock NA throttle cable here, working fine

 

Matt, can you post a pick of your routing? That might be the issue. I just parted out a 95 so I may try that cable. Yes I have a cable op TB not drive by wire but the butterfly isn't opening to 90*.
Thanks all...

 

that's the best pic i have right now. i can take better ones tomorrow if you want.