EFI Connection 24x Electronic TPI/LT1 Drive-by-Wire Throttle Bodies

New electronic throttle bodies are now available for the EFI Connection 24x system. Available sizes are 52mm, 58mm, and mono-blade. These can also be used with an LS1 engine if the intake manifold accepts the dual bore TPI/LT1 type throttle body.
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TAC Module and Pedal
These throttle bodies are designed to be used with the LS1/LS6 Corvette TAC module. The LS1/LS6 Corvette throttle body motor and TPS are used with this new design.

Throttle body ID plates are available separately for cable driven throttle body applications.
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Testing the first throttle body was a complete success! We pulled the RamJet 350 manifold with LS1/LS6 Corvette throttle body to swap in a TPI manifold with the first 52mm electronic TPI/LT1 throttle body. By tweaking {B4349} ETC Throttle Area Conversion for the change in throttle bore, {B4603} Desired Idle Speeds, and a few Throttle Cracker values, the vehicle drives just as it did with the 78mm LS1/LS6 Corvette throttle body. Integrated cruise control is beautiful and seamless with no vacuum lag. And with a 4L60E and all wheel drive system, this truck has never driven so well. The street manners are smooth and with the pedal to the floor it pulls hard.

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