Boost Gauge reading low

[saikat.saha]

Hi guys,

I am running 10psi on Greddy T518z according to my tumer report. But in boost Gauge it’s showing 5psi. 2 or 3 days ago it was okay. Suddenly it starts to showing 5psi constantly from 3k to 7k rpm. any suggestions?? Is it my map sensor is damaged or something else ( ** my tuning is going on still ) .

Thanks
Saikat

[steve99]

Log manifold pressure direct with ecutek or oft.


See what that says


Should be 1 bar or 14 psi with ignition kn engine off


Should be 0.3 bar or about 4 psi engine idling


Note reading is absolute ir reliative to atmospheric presdure

[saikat.saha]

Manifold pressure shows 1.7 bar with full throttle by ecutek datalog.

When ignition on and engine off it shows 1 bar.

When idle it shows.7 bar as turbo has factory spring .

I am using a ebc also

Thanks
Saikat

[steve99]

Originally Posted by saikat.saha

Manifold pressure shows 1.7 bar with full throttle by ecutek datalog.

When ignition on and engine off it shows 1 bar.

When idle it shows.7 bar as turbo has factory spring .

I am using a ebc also

Thanks
Saikat

If manifold presdure is ligging as 1.7 bar ful! Throttle thats 0.7 bar boost or about 10 psi.


So looks like boost guage faulty or if its got its own pressure sensor its faulty

[saikat.saha]

Thanks .

You are right. It was a one way check valve problem in the boost gauge line. Thats why boost was leaking . Not it’s soleved .