[LucaN54]

Hello, i logged my n54 and sometimes its 0.5-1.5psi under boost target ( V10 Stage 1 )
Is it normal ?

[LucaN54]

https://datazap.me/u/lucan54/run-1-0...rk=64-57-48-37

[Bimmer_Bro]

[QUOTE=LucaN54;31051656]Hello, i logged my n54 and sometimes its 0.5-1.5psi under boost target ( V10 Stage 1 )
Is it normal ?

I personally do not like v10 and neither does my car. It requests too much boost in the higher rpm’s which the small turbos work too hard to try meet the target. V9 or v7 is much better for the oem turbos as it tapers towards redline keeping them happier for longer.

[LucaN54]

[QUOTE="Bimmer_Bro;31051705"]

Originally Posted by LucaN54

Hello, i logged my n54 and sometimes its 0.5-1.5psi under boost target ( V10 Stage 1 )
Is it normal ?

I personally do not like v10 and neither does my car. It requests too much boost in the higher rpm’s which the small turbos work too hard to try meet the target. V9 or v7 is much better for the oem turbos as it tapers towards redline keeping them happier for longer.

Ty !! but is my log ok ? Runs pretty good

[Bimmer_Bro]

Originally Posted by LucaN54

Ty !! but is my log ok ? Runs pretty good

Looks ok other than your low pressure fuel pump. It’s dipping into the low 40s which is usually a sign it’s time to replace. It’s having trouble keeping up.
You could do another log on v7 or v9
And see it also dips as low.

[iqraceworks]

The deviable in boost target/boost actual is fine...a few PSI isn't a big deal.

What is a big deal, is your LPFP pressure dropping down to 40psi. Time for a new Stage 2 LPFP

[LucaN54]

Originally Posted by iqraceworks

The deviable in boost target/boost actual is fine...a few PSI isn't a big deal.

What is a big deal, is your LPFP pressure dropping down to 40psi. Time for a new Stage 2 LPFP

Ok i did a new log with V7.1 Stage 1 how is this log? Runs pretty good but some timing corrections and afr locks sometimes weird.. what do u think?

[LucaN54]

https://datazap.me/u/lucan54/v71?log=0&data=3-20

[iqraceworks]

Originally Posted by LucaN54

https://datazap.me/u/lucan54/v71?log=0&data=3-20

Looks a little better on the fuel pressure, but it should still hold 70psi under load, and you are down to 60psi on the LPFP.

If it was me, I would replace the LPFP before it completely dies and leaves you stranded.....

[LucaN54]

Originally Posted by iqraceworks

Looks a little better on the fuel pressure, but it should still hold 70psi under load, and you are down to 60psi on the LPFP.

If it was me, I would replace the LPFP before it completely dies and leaves you stranded.....

i already ordered a new pump👍🏼👌🏼 what can u say about the rest? looks ok?

[iqraceworks]

Originally Posted by LucaN54

i already ordered a new pump👍🏼👌🏼 what can u say about the rest? looks ok?

Looks like you have some timing corrections on the top end.....might want to keep an eye on that. I didn't see anything else that looked off. Those MHD tunes are pretty safe.

[LucaN54]

Originally Posted by iqraceworks

Looks like you have some timing corrections on the top end.....might want to keep an eye on that. I didn't see anything else that looked off. Those MHD tunes are pretty safe.

maybe spark plugs, they are 2 years old ..