Stage 2 S-OTS+ Map logs

[ThePatient]

this is a 3rd and 4th gear log from tonight. I have had a suspicion that i may have a boost leak.... it seems that i hit a little over 19psi at onset, then fade off to around 16... am i holding correctly and does everything else seem normal?

[a143gsxr]

Originally Posted by ThePatient this is a 3rd and 4th gear log from tonight. I have had a suspicion that i may have a boost leak.... it seems that i hit a little over 19psi at onset, then fade off to around 16... am i holding correctly and does everything else seem normal?

You almost always see the boost drop like this. The turbo can't hang at 19psi at the higher rpm. Your logs look pretty good. No knock and good A/F's.

[jtday]

I can hang at 19psi in the upper rev range no problem. This heat these last few days have played a role in that as I've noticed recently. I have similar mods as you albeit the test pipe and also see an increased boost level usually after spoolup that settles out. I only see max loads around 2 at that point however. Maybe your 2.1+ is normal with your mods. Everything else looks great. @Lex; ?

[a143gsxr]

Yeah good point, I'm down a couple psi going from 40 F to these last two days of 80F weather. That could add to it.

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[Lex]

Originally Posted by ThePatient this is a 3rd and 4th gear log from tonight. I have had a suspicion that i may have a boost leak.... it seems that i hit a little over 19psi at onset, then fade off to around 16... am i holding correctly and does everything else seem normal?

Everything is in check here. AFRs indicate there is no boost leak. The car is flowing well as well. It will only use as much boost as needed to reach the target flow/load. Since flow is what generates power these maps target a consistent torque output. In well flowing cars the boost will be lower and in colder weather the boost will be lower as well due to the air density being higher.

The maps are not meant to take you to the edge of performance as they are meant to keep a good safety margin with great driveability. The next step is the custom tune to dial in the setup very specifically.