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DISTRIBUTOR ACCESSORIES

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  • Absolutely the most
    powerful HEI Module
    available.
  • 32 Mhz controller
    manages the extreme
    current for full output
    at racing rpm.
  • Adjustable rev limiter
    from 5,000 – 10,000
    rpm.
  • Built-in Traction Control Detection technology.
  • Independent tach output lead provides a
    clean and reliable 12
    volt signal.
  • All new, injection molded cap, rotor and
    coil cover.


Extreme HEI Performance Kit
The Ultimate HEI Kit
After nearly 30 years since its introduction, who would have thought that the GM HEI distributor would still be used in thousands of cars. The aftermarket is ripe with replacement HEI modules, coils and caps, but no one has reinvented the HEI, until now! MSD’s Extreme Output HEI system features an amazing ignition module that is capable of producing up to 20 Amps to drive the coil! Yes, 20 Amps! Obviously, an oversized coil is required to handle this energy so our engineers devised an all new coil which can deliver over 100 millijoules of energy across the plug gap. All of this energy is monitored and controlled cylinder to cylinder by a 32 Mhz RISC microcontroller.
To handle all of this energy and the larger coil, a new cap and rotor had to be engineered. Our HEI Cap is molded from DuPont Rynite material which has high dielectric properties. The Cap must be used in order to fit the larger Extreme Output Coil, and it can still be installed on factory distributor housings.

Extreme Output HEI Kit,
Supplied with Module, Coil, Cap, Rotor and Dust Cover
PN 8502*
buy one now

INDIVIDUAL COMPONENTS:

Extreme Output Module, 20 Amp
PN 83641* buy one now

Extreme Output HEI Coil
PN 8220* buy one now

MSD Extreme HEI Cap
PN 84111 buy one now

MSD Extreme HEI Rotor
PN 84101 buy one now

TRACTION CONTROL DETECTION

In the majority of racing sanctions and classes, traction controlling devices are
illegal. MSD has never produced a traction control - and while it remains illegal, never will produce one. What we have designed is a code that will detect if an electronic traction control system is used with an HEI.
This Traction Control Detection (TCD™) technology carefully monitors and examines the signals of the ignition. If the TCD determines that any signal has been modified in any way, the ignition will be put into a low rpm rev limit mode that will immediately slow the car. Before this rev limit is imposed, the TCD goes through a list of cycles and checks to qualify that the trigger signal has been modified.

  • Advanced circuitry constantly monitors the ignition’s signals.
  • A rev limit mode will be activated if traction control is detected.
  • Proprietary technology is pending a U.S. Patent.

TCD Technology is available in two HEI Modules:

7.5 Amp, with Rev Limiter
PN 83645*

Extreme Output, 20 Amp, with Rev Limiter
PN 83641*

*Not legal for sale or use on pollution controlled vehicles.

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CARB Approved for use in all states. Patent Pending

 

 

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