View Full Version : 8977

08-18-2006, 11:26 PM
Hello, is the boost retard functions of the 8977 identical to the 7535? The 8977 seems to run off an internal map sensor so how much boost can it handle? Thanks.

08-31-2006, 10:30 AM

The function is the same but the 8977 is not adjustable. It will handle up to 30 psi (MAP) pressure. So if your atmospheric pressure at your altitude is 12.5psi then you will be able to control boost from 12.5 to 30 which would be 17.5 pounds of boost. This is MAP pressure and not gauge pressure.


MSD tech4