[Tan_N26]

I did some data logging with BM3 stage 2 911 AGG and saw that my Target Boost Psi hit 28. I remember reading somewhere that stage 2 is targeted 23 psi because going over is 24 if not good for an N26. Here is a link for my datalog.

http://www.bootmod3.net/log?id=5b5a958bd10b43626a89d488

[rjd_F30]

Assuming this is just a cruising log, because I couldn't find a WOT anywhere in there. Typically with logging, the shorter the better to make it easier for us to read. A 9 second WOT 2nd gear pull is ideal, unless you want a cruising log, like this, in which case I'd limit it to 15 seconds.

ANYWAY, the reason you're seeing 28psi as your target is because you have pressure set to absolute instead of relative in your datalog settings. Absolute pressure combines both ambient pressure and boost pressure, so 28 psi make perfect sense in the application of this log. To change it, simply go to datalogs, click the gear icon in the top right, and change pressure to relative, it will be one of the first options on the list

[Tan_N26]

Originally Posted by rjdnyy224

Assuming this is just a cruising log, because I couldn't find a WOT anywhere in there. Typically with logging, the shorter the better to make it easier for us to read. A 9 second WOT 2nd gear pull is ideal, unless you want a cruising log, like this, in which case I'd limit it to 15 seconds.

ANYWAY, the reason you're seeing 28psi as your target is because you have pressure set to absolute instead of relative in your datalog settings. Absolute pressure combines both ambient pressure and boost pressure, so 28 psi make perfect sense in the application of this log. To change it, simply go to datalogs, click the gear icon in the top right, and change pressure to relative, it will be one of the first options on the list

Thank you so much, I was a little worry seeing my boost so high. It is my first time trying to log so I’m still leanrning. Btw do you know what my MAF lb/m shoulf be? I installed a Injen CAI just want to make sure it is working properly.

[rjd_F30]

Originally Posted by Tan_N26

Thank you so much, I was a little worry seeing my boost so high. It is my first time trying to log so I’m still leanrning. Btw do you know what my MAF lb/m shoulf be? I installed a Injen CAI just want to make sure it is working properly.

No problem, I got a little worried when the same thing happened to me lol.

MAF lb/m should be around 25-30 at WOT. Try doing a log how I said in my last post and see what it's at.

[Tan_N26]

Originally Posted by rjdnyy224

No problem, I got a little worried when the same thing happened to me lol.

MAF lb/m should be around 25-30 at WOT. Try doing a log how I said in my last post and see what it's at.

I did some more logging for Stage 2 91 AGG my car hit 20.12 PSI boost and my MAF lb/m is 31. Isn't the target boost for Stage 2 is 22psi or is that for 93 octane?

http://www.bootmod3.net/log?id=5b5d56f8d10b43626a89db07

[M2_MEDUSA]

Originally Posted by rjdnyy224

Assuming this is just a cruising log, because I couldn't find a WOT anywhere in there. Typically with logging, the shorter the better to make it easier for us to read. A 9 second WOT 2nd gear pull is ideal, unless you want a cruising log, like this, in which case I'd limit it to 15 seconds.

ANYWAY, the reason you're seeing 28psi as your target is because you have pressure set to absolute instead of relative in your datalog settings. Absolute pressure combines both ambient pressure and boost pressure, so 28 psi make perfect sense in the application of this log. To change it, simply go to datalogs, click the gear icon in the top right, and change pressure to relative, it will be one of the first options on the list

9 second wot in 2nd gear? Lol who says full out in 2nd gear for 9 seconds. Shit 2k rpm I'm redlining by 3 seconds lol

[rjd_F30]

Originally Posted by IssaF32

9 second wot in 2nd gear? Lol who says full out in 2nd gear for 9 seconds. Shit 2k rpm I'm redlining by 3 seconds lol

Just from my experience, that's how I get the cleanest and easiest to read logs. That's just how I like to do it

[rjd_F30]

Originally Posted by Tan_N26

I did some more logging for Stage 2 91 AGG my car hit 20.12 PSI boost and my MAF lb/m is 31. Isn't the target boost for Stage 2 is 22psi or is that for 93 octane?

http://www.bootmod3.net/log?id=5b5d56f8d10b43626a89db07

Yah maybe 22psi is for 93, 20.12 for 91. I never really knew what the distinction was but maybe that's it. Also, look at MAP psi to see what psi you're actually hitting, the target is just that, a target. That log looks good expect for your timing being way outta whack. They should ideally be all the same number and slope up towards redline. Not sure what the problem may be there... but sometimes I've run logs that had timing like that, ran another and it was fine...

[Tan_N26]

Originally Posted by rjdnyy224

Yah maybe 22psi is for 93, 20.12 for 91. I never really knew what the distinction was but maybe that's it. Also, look at MAP psi to see what psi you're actually hitting, the target is just that, a target. That log looks good expect for your timing being way outta whack. They should ideally be all the same number and slope up towards redline. Not sure what the problem may be there... but sometimes I've run logs that had timing like that, ran another and it was fine...

I think because I need to change my Spark Plugs. I believe they are factory with 35k on it already.

[BunkerJ]

Originally Posted by Tan_N26

I think because I need to change my Spark Plugs. I believe they are factory with 35k on it already.

About that time then.

[Tan_N26]

Originally Posted by BunkerJ

About that time then.

It is on my list to do next. Need to get my GFB DV+ install this week. Still looking for a shop in the Bay Area to have it install .

[BunkerJ]

Originally Posted by Tan_N26

It is on my list to do next. Need to get my GFB DV+ install this week. Still looking for a shop in the Bay Area to have it install .

If you can get that tool made, you could knock it out yourself, alongside the plugs. Both easy installs IMO.

[M2_MEDUSA]

Originally Posted by rjdnyy224

Just from my experience, that's how I get the cleanest and easiest to read logs. That's just how I like to do it

WOT in second takes no more than 4 seconds maybe even 3

[rjd_F30]

Originally Posted by rjdnyy224

Just from my experience, that's how I get the cleanest and easiest to read logs. That's just how I like to do it

Originally Posted by IssaF32

WOT in second takes no more than 4 seconds maybe even 3

Bolded, in case you didn't get it the first time.

[BunkerJ]

Originally Posted by rjdnyy224

Bolded, in case you didn't get it the first time.

WOT in second takes no more than 3 seconds maybe even 2

[rjd_F30]

Originally Posted by BunkerJ

WOT in second takes no more than 3 seconds maybe even 2

[BunkerJ]

Originally Posted by rjdnyy224

WOT in second takes no more than 2 seconds maybe even 1

[rjd_F30]

Originally Posted by BunkerJ

WOT in second takes no more than 2 seconds maybe even 1

[ilivas]

You will get a higher peak boost the higher the gear. If you’re logging peak, you should do at least 4th gear.

[Tan_N26]

Originally Posted by ilivas

You will get a higher peak boost the higher the gear. If you’re logging peak, you should do at least 4th gear.

I will try this over the weekend. Just got new CP, DV + and MPE Exhaust installed. I wonder it it will make any different in peak boost.

[rjd_F30]

Originally Posted by Tan_N26

I will try this over the weekend. Just got new CP, DV + and MPE Exhaust installed. I wonder it it will make any different in peak boost.

It won't, it's all in the tune. BM3 doesn't do boost by gear either, so you should be seeing the same peak boost in every gear.

[ilivas]

Originally Posted by rjdnyy224

It won't, it's all in the tune. BM3 doesn't do boost by gear either, so you should be seeing the same peak boost in every gear.

It’s not really a boost by gear thing. Just kind of the way wastegates work. Since there is a larger load placed on the turbo in higher gears, boost tends to spike a bit more there. Which is why they dyno tune in the 1:1 gear usually 4th or 5th gear.

It’s not normally a lot. But you might see an extra psi of boost.