Boost fluctuation

[turbocrazy]

Ok so I have a guy telling me something is wrong with my car and I wanna see what some supra vets think about the issue in question. My car seems to boost at a lower boost range In the first couple gears then the last couple. I've seen around maby 14-15psi In first and In about 4th-5th gear it will boost around 20psi what could cause a change like this?

 

[super51fan]

Your higher gears finally create max load on engine and therefor max exhaust gas velocity. I have always set my boost settings in 4th gear. So if you want 15 psi then set to 15 psi in 4th gear.

IMO .

 

[atmperformance]

engine load changes depending on gear ratios and that load effects how the turbo works.

 

[BryanDyer]

Your higher gears finally create max load on engine and therefor max exhaust gas velocity. I have always set my boost settings in 4th gear. So if you want 15 psi then set to 15 psi in 4th gear.

IMO .

Agreed. This is what I do as well. 3rd or 4th gear.