[Bowenpuref3p]

This is the first log I took since installing my ps2 and running the mhd ots ps2 map on my pwg n55. I hope this link works cause I can't find any other way of linking to my datazap account.

My car is a f30 pwg n55 xdrive with basically stock fueling as I'm currently using the original b58 hpfp. I have a bit of ethanol left in the tank from my previous stg2+ e30 map. My analyzer says e17 and the rest 93

To my untrained eyes it looks pretty good to me except it seems I consistently get timing corrections on cyl2.
Am I reading that correct?
How much is too much on timing corrections?
What can cause that in only cyl2 bad sparkplugs or coils?

Here are the type of logs you guys requested 3rd gear from 2500-6500

https://datazap.me/u/bowenf30/mhd-ps...o=3&mark=23-24

https://datazap.me/u/bowenf30/mhd-ps...-21&mark=29-33

https://datazap.me/u/bowenf30/mhd-ps...-21-29&mark=39

[Munchi435i]

You need to do a proper log. 4th gear from 2500 rpms to 6500rpms.

[Bowenpuref3p]

Originally Posted by Munchi435i

You need to do a proper log. 4th gear from 2500 rpms to 6500rpms.

I'm 6spd can I do a 3rd gear pull? Don't really want to pull 4th gear as I'll be doing over 120mph

[FastF30]

Originally Posted by Bowenpuref3p

I'm 6spd can I do a 3rd gear pull? Don't really want to pull 4th gear as I'll be doing over 120mph

Bowenpuref3p
3rd gear manual... 4th gear auto....

also please include specs of car
year
RWD or Xdrive
Man or Auto
Fuel used
Fuel system upgrades
Etc:

[Munchi435i]

Originally Posted by Bowenpuref3p

I'm 6spd can I do a 3rd gear pull? Don't really want to pull 4th gear as I'll be doing over 120mph

Yes forgot to mention if you are manual transmission then do a 3rd gear log

[Bowenpuref3p]

Originally Posted by Munchi435i

Yes forgot to mention if you are manual transmission then do a 3rd gear log

Ok will do a few 3rd gear pulls tonight or tomorrow.
My car is a f30 pwg n55 xdrive 6spd with a ps2 turbo and fbo. I'm running the mhd ps2 ots map for 93octane. I was running the e30 tune prior to the ps2 install so the tank has some ethanol still in it. My analyzer says it's currently e17 with the rest 93.

I plan on getting a custom e30-e50 tune soon as I'm waiting until the 27th when dorch has their stg2 hpfp on sale. I'm just curious to see how the generic ots map is performing. I will say it certainly feels like it is running really good on the ps2 ots map. But you can tell this turbo has wayyyy more power to give with supplemental fueling and ethanol.

[Bowenpuref3p]

I edited the first post to contain all the info and new logs that your guys recommended. Thanks in advance guys.

I took 3 logs in 3rd gear pulls from 2500 to 6500. Hopefully these are better then my previous attempts. My limited ability to read and understand logs says these look pretty good. I do see some timing pulls in only cyl2 and wondering if that is bad and what could cause it.
Any input would be appreciated.

https://datazap.me/u/bowenf30/mhd-ps...o=3&mark=23-24

https://datazap.me/u/bowenf30/mhd-ps...-21&mark=29-33

https://datazap.me/u/bowenf30/mhd-ps...-21-29&mark=39

[Munchi435i]

Originally Posted by Bowenpuref3p

I edited the first post to contain all the info and new logs that your guys recommended. Thanks in advance guys.

I took 3 logs in 3rd gear pulls from 2500 to 6500. Hopefully these are better then my previous attempts. My limited ability to read and understand logs says these look pretty good. I do see some timing pulls in only cyl2 and wondering if that is bad and what could cause it.
Any input would be appreciated.

https://datazap.me/u/bowenf30/mhd-ps...o=3&mark=23-24

https://datazap.me/u/bowenf30/mhd-ps...-21&mark=29-33

https://datazap.me/u/bowenf30/mhd-ps...-21-29&mark=39

Boost seems to fall off target in the low rpms then gets back on target. Wgdc is very low but I'm not sure if this normal behavior of PWG turbos. I'd check for wastegate rattle and check for leaks.

[Bowenpuref3p]

Originally Posted by Munchi435i

Boost seems to fall off target in the low rpms then gets back on target. Wgdc is very low but I'm not sure if this normal behavior of PWG turbos. I'd check for wastegate rattle and check for leaks.

Well I'm not sure what the waste gate should read on pwg cars either. I did ease into the throttle in low tpms and not just stomping on it so maybe that's the cause of the low tpms boost issue.
Should I have just mashed the throttle to 100% immediately?

But I do know the wastegate is set properly as I set it to bmw vaccum spec a week ago before I reinstalled it with the ps2. I'll double check though to make sure.
Did you see the timing pull only in cyl 2?
Does that seem odd to you?

[harkes]

Originally Posted by Bowenpuref3p

I edited the first post to contain all the info and new logs that your guys recommended. Thanks in advance guys.

I took 3 logs in 3rd gear pulls from 2500 to 6500. Hopefully these are better then my previous attempts. My limited ability to read and understand logs says these look pretty good. I do see some timing pulls in only cyl2 and wondering if that is bad and what could cause it.
Any input would be appreciated.

https://datazap.me/u/bowenf30/mhd-ps...#38;mark=23-24

https://datazap.me/u/bowenf30/mhd-ps...#38;mark=29-33

https://datazap.me/u/bowenf30/mhd-ps...29&mark=39

How does the car feel? That you cannot read from a log. Most important after all. Experienced any drivability issues or hiccups?

[Bowenpuref3p]

Originally Posted by harkes

How does the car feel? That you cannot read from a log. Most important after all. Experienced any drivability issues or hiccups?

Honestly it's the best the car has felt since it was completely stock. It pulls incredibly smooth getting stronger as the rpms increase. It's refreshing to have a turbo that wants to pull past redline. You can really tell the turbo is not working hard at all at with this ots ps2 map. Dorch's black friday sale can not come soon enough. I'm dying to throw some ethanol at it and get her custom tuned.

But before I do that I wanted to make sure the logs seem good before I turn up the boost.

[Bowenpuref3p]

So since I have a few degrees of timing corrections that seem to only be in cyl2 I want to try swapping plug and coil to a different cyl to see if it travels.
So which is cyl2 on a n55? Is the cylinder closest to the front of the car cyl1 or cyl6?
I'm guessing it's cyl1 but can't find the answer any where.

[thejeremyman9]

Originally Posted by Bowenpuref3p

I edited the first post to contain all the info and new logs that your guys recommended. Thanks in advance guys.

I took 3 logs in 3rd gear pulls from 2500 to 6500. Hopefully these are better then my previous attempts. My limited ability to read and understand logs says these look pretty good. I do see some timing pulls in only cyl2 and wondering if that is bad and what could cause it.
Any input would be appreciated.

https://datazap.me/u/bowenf30/mhd-ps...o=3&mark=23-24

https://datazap.me/u/bowenf30/mhd-ps...-21&mark=29-33

https://datazap.me/u/bowenf30/mhd-ps...-21-29&mark=39

First, give my thread a read here if you want more info on datalogging: https://f30.bimmerpost.com/forums/sh....php?t=1732327

These logs generally look fine. You do have that small dip in boost but i think thats just the response of the PWG wastegate keeping boost under control. You are also close to load target (with that small dip), so i wouldn't really worry about a leak or WG issue unless a custom tune also has problems controlling boost.

The timing corrections also look very minor so i wouldnt worry about those either. Overall the logs look fine.

In one of the logs i noticed IATs went up a decent amount. What IC are you running?

[Bowenpuref3p]

Originally Posted by thejeremyman9

First, give my thread a read here if you want more info on datalogging: https://f30.bimmerpost.com/forums/sh....php?t=1732327

These logs generally look fine. You do have that small dip in boost but i think thats just the response of the PWG wastegate keeping boost under control. You are also close to load target (with that small dip), so i wouldn't really worry about a leak or WG issue unless a custom tune also has problems controlling boost.

The timing corrections also look very minor so i wouldnt worry about those either. Overall the logs look fine.

In one of the logs i noticed IATs went up a decent amount. What IC are you running?

Oh trust me I have been. reading your posts about understanding logs. I'm going back and forth from datazap to your thread and slowly learning.

I'm running a vrsf street intercooler. I plan on going bigger after I install my dorch hpfp.

I took one more 3rd gear log today it also looks good overall to me as well so I'm pretty happy with the ots ps2 map. It leaves a ton of power on the table but it runs really nicely.

https://datazap.me/u/bowenf30/mhd-ps...62&mark=18

[Bowenpuref3p]

When I'm looking at cyl timing pull numbers in my logs how much is too much?

[thejeremyman9]

Originally Posted by Bowenpuref3p

Oh trust me I have been. reading your posts about understanding logs. I'm going back and forth from datazap to your thread and slowly learning.

I'm running a vrsf street intercooler. I plan on going bigger after I install my dorch hpfp.

I took one more 3rd gear log today it also looks good overall to me as well so I'm pretty happy with the ots ps2 map. It leaves a ton of power on the table but it runs really nicely.

https://datazap.me/u/bowenf30/mhd-ps...m=0-62&mark=18

Cool, just making sure you had seen the thread.

Skimmed though the log and it looks fine. You do have a slight dip in rail pressure at one spot but i dont think its because you are actually running out of fuel. Load control looks very good.

Originally Posted by Bowenpuref3p

When I'm looking at cyl timing pull numbers in my logs how much is too much?

Depends on your pursuit of perfection lol. But realistically, misc corrections of a couple degrees here and there are more or less unavoidable. You need to look at actual timing to see how much correction you are getting relative to target. If you are running 8 degrees and pulling 6, i would say thats too much, especially if its happening across multiple cylinders and all the time.

[Bowenpuref3p]

Originally Posted by thejeremyman9

Cool, just making sure you had seen the thread.

Skimmed though the log and it looks fine. You do have a slight dip in rail pressure at one spot but i dont think its because you are actually running out of fuel. Load control looks very good.

Depends on your pursuit of perfection lol. But realistically, misc corrections of a couple degrees here and there are more or less unavoidable. You need to look at actual timing to see how much correction you are getting relative to target. If you are running 8 degrees and pulling 6, i would say thats too much, especially if its happening across multiple cylinders and all the time.

Yeah even if my fuel pressure dips it's not a big deal as dorch's black friday sale is it a few days away and I'm going overkill with their stg2.

Regarding the timing your saying rather then looking at timing corrections look at actual timing numbers and compare to what the tune is asking for correct?

Everyday I start looking at logs the numbers are slowly becoming easier to understand and it's easier to see patterns. Your thread is truly helpful thanks a ton for taking the time to create it.

[thejeremyman9]

Originally Posted by Bowenpuref3p

Yeah even if my fuel pressure dips it's not a big deal as dorch's black friday sale is it a few days away and I'm going overkill with their stg2.

Regarding the timing your saying rather then looking at timing corrections look at actual timing numbers and compare to what the tune is asking for correct?

Everyday I start looking at logs the numbers are slowly becoming easier to understand and it's easier to see patterns. Your thread is truly helpful thanks a ton for taking the time to create it.

I'm saying you need both for context. Looking at corrections is a easy way to see how much is being pulled, but you need to know what that correction is relative to... For example if you are pulling 2 degrees but targeting 10, those 2 degrees aren't very significant. But if you are targeting 4 and pulling 2, then that's more significant. Usually there is at least 1 cylinder with no corrections, and that's what you can use to see what the tune is targeting at that specific boost/load/rpm. Timing is going to increase with RPM throughout the pull, and of course higher octane maps will have higher absolute targets, which ethanol/race gas maps having the highest targets.

[Bowenpuref3p]

Originally Posted by thejeremyman9

I'm saying you need both for context. Looking at corrections is a easy way to see how much is being pulled, but you need to know what that correction is relative to... For example if you are pulling 2 degrees but targeting 10, those 2 degrees aren't very significant. But if you are targeting 4 and pulling 2, then that's more significant. Usually there is at least 1 cylinder with no corrections, and that's what you can use to see what the tune is targeting at that specific boost/load/rpm. Timing is going to increase with RPM throughout the pull, and of course higher octane maps will have higher absolute targets, which ethanol/race gas maps having the highest targets.

I got you now. That makes a ton of sense thanks for the clarification. I think tomorrow I'm going to flash the ots ps2 95 octane map and use a bit of e85 as a octane booster and see how the timing looks in that log.

I'll post up the log once I get a chance to actually make the log.