We are now an EFI Source dealer! Their Gold Box has been powering the `Cuda reliably for years and will be managing the 73 Challenger's 426 all-aluminum Gen 3 Hemi engine as well.
The Gold Box is available in Xtra Gold as well which has the microsquirt controller integrated, so you can run GM trans control or additional I/O for your boosted Gen 3 Hemi, LSX or Coyote motors.
EFI Source also has Hellcat specific harnesses that are not on their website yet. It has the extra sensors required along with the portion for the bypass valve and requires a cable driven throttle body. It does cost more than the 2006-2008 & 2009+ Gen 3 Hemi harnesses at $595.00.
To order email us at RylisPro@gmail.com thanks!