Liam bird
Member
Hi just been reading about we’re you take boost pressure for IP and found this ?
“mine, having done the intercooler and FiP pin and max fuel screw mods this matched the pressure and saw a jump from 0.9bar at manifold (std wastegate setup) to 1.3 bar at manifold, taking wastegate feed from inlet, under full boost. it was quicker off the mark and used less fuel.
The second part is the FiP pin which moves down under pressure.
The greater the pressure the further the pin moves down and then the higher the fuel delivery.
In standard this pressure feed comes from the same pipe as the wastegate pipe (its T'd in)
If you leave this feed here it means the FiP diaphragm will move down as the turbo instantly produces pressure.
If you moved this feed to the inlet manifold it would produce pressure and move the pin down still but the pressure would be less compared to the pressure at the original 'T' piece, due to losses in the pipework (from tubo to intercooler)
So to give the vehicle more low down you need to make the FiP pin move down asap, so therefore keep the FiP feed direct off the turbo”
This goes opposite to what I have been lead to belive and my 300tdi is taking pressure from the back of inlet manifold ?
So it’s turbo actuator to intake manifold to IP via a T in boost gauge.
OR
turbo actuator to outlet of turbo to IP via boost gauge .
from your findings what’s the best way cheers .
“mine, having done the intercooler and FiP pin and max fuel screw mods this matched the pressure and saw a jump from 0.9bar at manifold (std wastegate setup) to 1.3 bar at manifold, taking wastegate feed from inlet, under full boost. it was quicker off the mark and used less fuel.
The second part is the FiP pin which moves down under pressure.
The greater the pressure the further the pin moves down and then the higher the fuel delivery.
In standard this pressure feed comes from the same pipe as the wastegate pipe (its T'd in)
If you leave this feed here it means the FiP diaphragm will move down as the turbo instantly produces pressure.
If you moved this feed to the inlet manifold it would produce pressure and move the pin down still but the pressure would be less compared to the pressure at the original 'T' piece, due to losses in the pipework (from tubo to intercooler)
So to give the vehicle more low down you need to make the FiP pin move down asap, so therefore keep the FiP feed direct off the turbo”
This goes opposite to what I have been lead to belive and my 300tdi is taking pressure from the back of inlet manifold ?
So it’s turbo actuator to intake manifold to IP via a T in boost gauge.
OR
turbo actuator to outlet of turbo to IP via boost gauge .
from your findings what’s the best way cheers .
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