Boost spike with xfi

[CS99]

I recently put in a weber 109 stroker. I now have a 5 psi boost spike using an in car bleeder valve. The boost spike used to be around 2psi with the stock block. I know it is spooling quicker, but want to know if there is anything I can do within XFI to slow the spike. Mabey add more fuel?

 

[norbs]

You should be using the FAST XFI boost control really, but your using what type of gate? Its a RJC bleeder?

 

[CS99]

You should be using the FAST XFI boost control really, but your using what type of gate? Its a RJC bleeder?

I have been watching that thread and plan on doing it. I am using an hks in the crossover pipe. Boost spike wasn't an issue until I put the new motor in. The srtoker block seems to spool the turbo quicker. On a side note: What does the restricter do that is in the plastic Y for the stock wastegate?

 

[norbs]

I have been watching that thread and plan on doing it. I am using an hks in the crossover pipe. Boost spike wasn't an issue until I put the new motor in. The srtoker block seems to spool the turbo quicker. On a side note: What does the restricter do that is in the plastic Y for the stock wastegate?

The wastegate method is the best way. The restrictor limits the volume to the actuator and solenoid so that the solenoid only has to bleed off a small amount of air to have a bigger effect at the actuator. If the restrictor was missing boost would be low and if it was too small boost would be high.

 

[CS99]

The wastegate method is the best way. The restrictor limits the volume to the actuator and solenoid so that the solenoid only has to bleed off a small amount of air to have a bigger effect at the actuator. If the restrictor was missing boost would be low and if it was too small boost would be high.

Thank you.

 

[norbs]

What size is the gate on the car, and what turbo?