Apex with mpi stage one. I just bought the sled with the dealer installed supercharger. gems fuel is right on across the board and getting full rpms but when pulling a hill at 3/4 throttle its at full boost 10. and when going to full throttle it drops to 7 psi. It still has full rpms. Mpi said they have heard of this but dont know why it does it.
DC5
TY 4 Stroke Junkie
This is normal if your gauge is connected to the intercooler. What pulley's are installed?
dont know the pulley size. why would the intercooler show a loss in boost? should i move boost gauge to the other side of throttle plates?
DC5
TY 4 Stroke Junkie
If you move it behind the throttle plates you will get the true reading. The intercooler will show more pressure when the throttle is not wide open.
so my true boost is only seven. I wonder why mpi couldnt tell me that. That means pulley change and change the boost signal. I hope your right. I have my bypass plumbed in on the engine side of throttles.
E&S
Newbie
- Joined
- Feb 10, 2011
- Messages
- 3
MPI
. I have my bypass plumbed in on the engine side of throttles.
I think you just answered your own question. Check to see if your blow off is where your boost leak is. Run without the hood on and feel with your hand if boost is overpowering the spring. If this is the case then adjust your spring tighter or install a stiffer spring.
. I have my bypass plumbed in on the engine side of throttles.
I think you just answered your own question. Check to see if your blow off is where your boost leak is. Run without the hood on and feel with your hand if boost is overpowering the spring. If this is the case then adjust your spring tighter or install a stiffer spring.
