1986.5-1989 Hardbody V-6
- Top speed limiter is removed.
- The rev limiter is raised to 7,000 RPM
- Most aggressive fuel map and timing curve when 91+ premium fuel is used.
- Optimize the throttle response code for better throttle response.
- Still allows for smooth idling.
- Easily installed.
- You must either send your working ECU to be upgraded or pay a deposit of $500.00 for no down time. Deposit will be refunded when we receive your working ECU.
- 15-17HP increase.
- This is a special order item and no refunds, returns, or exchanges will be offered.
- It is important that you include a list of your vehicle details including automatic or manual transmission, California or Federal emissions, any performance upgrades, etc.
- Item Requires Shipping
- 7.0 lbs.