live mapping a 3B, issues

[Giacomo]

Hello,
I have a friend that does not speak english whose is live mapping a 3B with this parts:

K24-7000 billet wheel
RS2 injectors
FPR can be regulate
Wagner EM
No cats
Bosch 044

He says the car is running VERY lean.
Shouldn't run rich?

Also, the car as a peak torque of 350 nm at very low RPM, then both torque/power drop, and the mixture becomes lean with scaring knock also.

Kindly, does anybody have some advice?
Thanks

[UrS4boy]

Kindly, does anybody have some advice?
Thanks

Tell him to stop before he totally kills his engine. It is running too lean the pinging and exhaust temps are going to kill the pistons. This is why there are professionals who do this stuff.

He needs at least 4 bar fuel pressure at the fuel rail at all times. Sounds like he has way less than that.

[Bowie69]

Was gonna say, sounds like a dead fuel pump, clogged filter, both, or a duff pressure regulator.

[newsh]

Fit a 7A fuel pressure reg and make sure the vacuum/boost hose connection to it is good with no leaks.

Make sure there is no leak between MAF and Turbo. This includes leaks in the PCV Crankcase vent system

Fit new fuel pump and filter.