TIAL 001841 LG YELLOW SPRING: .7 Bar/10.15 psi for WG38/40, .6 Bar/8.70 psi for WG44/46 FV0023376 REV
TIAL Large Yellow spring for Westgate 0.7 Bar for 38/40, 0.6 Bar for 44/46
Higher Pressure Settings require the use of both Small and Large diameter springs. When using a Dual Spring setup the resultant pressure is equal to the sum of the individual springs.
Note: Boost pressures are only an approximation based on intake manifold pressures equaling exhaust manifold pressure.