Haltech Elite 1500 Engine Control Module - 4-Cylinder / 2-Rotor HT-150900 RPCR8342 ***Will not work on 6

***Will not work on 6 Cylinder Odd-Fire applications***

Vehicle Applications: 1970-1981 GM F-Body Rear Leaf Spring Set

Nitrous Express Proton EFI Fly By Wire Nitrous System 20422-10 w/10 lb

and every car is

1989-1991 GMC V2500 Suburban

Haltech Elite 1500 Engine Control Module - 4-Cylinder / 2-Rotor HT-150900 RPCR8342 ***Will not work on 6Product Description: Engine Control Module Elite 1500 4 Cylinder 2 Rotor Sold Individually With a worldwide presence and a wide range of control products for racing vehicles, Haltech is a leader in aftermarket ECU and VCU modules, harnesses, sensors, and more. From basic control units to advanced systems with virtually limitless customization capabilities, Haltech products are designed for ease of use and installation.