[marv85]

Originally Posted by Chipped B6

My traction was sport+ so half off.

I'll datalog my second to third gear run which sets me back to stock tune.

turn traction control completely off... I asked because your log indicates traction control intervention which causes throttle closures

[GhostyM]

Too much power it seems. Hehehe

[bigdnno98]

Yup throttle closures caused by too much wheel spin will but the jb4 in safe mode.

[spool twice]

Originally Posted by Chipped B6

G4.

This is the log from a straight 3rd gear pull. Just a reminder, this was like 10 miles after resetting map5 for my new 25% ethanol. My boost safety is at 18psi currently. This is my second third gear pull after resetting my map5, so the 6500 and up wasn't "autotuned" because the first run I didn't run it past that. (ran out of road).

Based on this log, the ignition curve is more advanced than a 335iS, which IIRC starts at 6 and ramps up to 10. You AFR looks substantially better than in the first post. Looks like Map 5 needs to auto-learn more though, but it's bound to improve with 2-3 more WOT runs in 3rd gear.

[Mike@N54Tuning.com]

Originally Posted by enrita

AFR should be 13-12.5 across with E85. You shoudnt change stuff if you cant read a log.
Best is to have Terry help you.

+1

[GhostyM]

okay. I'm really stumped now.

All my datalogs look pretty decent now.. but I'm still getting the map4 switch coming out of 3rd into 4th/2nd into 3rd, then 4th WOT.

I'll upload the data log when i get home. I have yet to go for datalog of the downtune in progress. But after running a couple data logs in 3rd.. looking good to me, i dropped everything off at home. Went out, wanted to do a quick run.. and it happens over and over. It's not the boost safety either. The ECU was reporting 16psi.

[spool twice]

Originally Posted by Chipped B6

okay. I'm really stumped now.

All my datalogs look pretty decent now.. but I'm still getting the map4 switch coming out of 3rd into 4th/2nd into 3rd, then 4th WOT.

I'll upload the data log when i get home. I have yet to go for datalog of the downtune in progress. But after running a couple data logs in 3rd.. looking good to me, i dropped everything off at home. Went out, wanted to do a quick run.. and it happens over and over. It's not the boost safety either. The ECU was reporting 16psi.

send a log to Terry and see what he says.

[frank35]

Originally Posted by bigdnno98

You're super lean man. If using FUA=2 if start at OL fueling at 85 and go down from there. The smaller the OL number the leaner the car will run.

the larger the number in the open fuel, pretty lean run ?
90 is thinner than 80?
boost is different with 80 or 90 FUA ?

[GhostyM]

There is PM'ing on n54tech so I can't send the logs to him.

Here are some updated logs of third gear pulls.



I have the logs waiting on Terry to analyze on n54tech.

[Mike@N54Tuning.com]

Originally Posted by Chipped B6

There is PM'ing on n54tech so I can't send the logs to him.

Here are some updated logs of third gear pulls.



I have the logs waiting on Terry to analyze on n54tech.

You may be waiting awhile, BMS doesn't do 1 on 1 support or log review on forums. You'd have to email the CSV file in for their opinion. But based on the pictures above looks OK to me.

Mike

[GhostyM]

Mike;

Why is it that when I'm shifting into 4th while WOT, the car down tunes me? I set my boost safety at 18psi.. and it looks like I'm one of the VERY few with this problem. Is it maybe because i have a Z4?

[Mike@N54Tuning.com]

Originally Posted by Chipped B6

Mike;

Why is it that when I'm shifting into 4th while WOT, the car down tunes me? I set my boost safety at 18psi.. and it looks like I'm one of the VERY few with this problem. Is it maybe because i have a Z4?

Have you emailed in a log to BMS showing a 3->4 shift with it switching to map 4 post shift? What did they say?

Mike

[GhostyM]

I have and no response yet.
On the other hand, I'm not trying to drive like a damn idiot if they ask for more logs blasting to the top of 4th just to replicate a log.

Anyone have any idea? It happens on maps with lower boost as well. I have DCT.

[Myaddiction]

Originally Posted by Chipped B6

There is PM'ing on n54tech so I can't send the logs to him.

Here are some updated logs of third gear pulls.



I have the logs waiting on Terry to analyze on n54tech.

If you read the sticky at the top of the support forum it says that you should email Terry directly for support and it has his email.

You're still lean and your timing is in the dirt. Please email Terry the logs before you damage the engine.

One of the best things about the JB4 is the awesome support Terry provides as long as you: 1. Email him directly like he asks and 2. listen to what he has to say.

Posting on here and asking for help is like getting open heart surgery from the lowest bidder in Mexico. Sure it could work out but there is nothing to prove any of us knows what we are talking about.

[GhostyM]

Originally Posted by Myaddiction

If you read the sticky at the top of the support forum it says that you should email Terry directly for support and it has his email.

You're still lean and your timing is in the dirt. Please email Terry the logs before you damage the engine.

One of the best things about the JB4 is the awesome support Terry provides as long as you: 1. Email him directly like he asks and 2. listen to want he has to say.

Posting on here and asking for help is like getting open heart surgery from the lowest bidder in Mexico. Sure it could work out but there is nothing to prove any of us knows what we are talking about.

No reply from him yet. And secondly; the timing is different in the Z4's last i heard. Lean? I'm in 12.5-13.0 afr's at full load.
I DID listen to him. But unfortunately, no reply back yet.

[Myaddiction]

Originally Posted by Chipped B6

No reply from him yet. And secondly; the timing is different in the Z4's last i heard. Lean? I'm in 12.5-13.0 afr's at full load.
I DID listen to him. But unfortunately, no reply back yet.

So you did email him or are you waiting for a reply on the fourm? Email is much faster.

When you first hit full boost your still at 14 afr and heading down. Your crossing through peak tq with a less then idea afr. Where did you get the 12.5-13.0 afr from? Thats about .5 higher then most run.

Peak tq is where you are most likely to knock because you are getting the max air mass in the cyl for each stroke causing your cyl pressures to be the highest. If you look at your timing at that point it takes a hit in every log and dips down to 5 deg. The stock timing is different in the Z4 35is but once tuned, all the N54's are the same there is no hardware changes. You should be seeing around 10 degs in that area, indicating the DME is seeing knock and pulling timing.

[GhostyM]

Originally Posted by Myaddiction

So you did email him or are you waiting for a reply on the fourm? Email is much faster.

When you first hit full boost your still at 14 afr and heading down. Your crossing through peak tq with a less then idea afr. Where did you get the 12.5-13.0 afr from? Thats about .5 higher then most run.

Peak tq is where you are most likely to knock because you are getting the max air mass in the cyl for each stroke causing your cyl pressures to be the highest. If you look at your timing at that point it takes a hit in every log and dips down to 5 deg. The stock timing is different in the Z4 35is but once tuned, all the N54's are the same there is no hardware changes. You should be seeing around 10 degs in that area, indicating the DME is seeing knock and pulling timing.

I'm using the auto tune settings, so I don't see why it should be any different from all the other N54's from your wording. I did email him. I'll turn the auto open loop fueling back on (futureusaA=2) and run it again, this time with 25% ethanol, because when i left it on anything more than 35%, I started maxing fuel trims.

I'll remap it and datalog.

EDIT: Got a response from Terry. All I got to do is datalog when I get the stock tune issue pop up and I'll send them the files.

[bigdnno98]

Originally Posted by Chipped B6

There is PM'ing on n54tech so I can't send the logs to him.

Here are some updated logs of third gear pulls.



I have the logs waiting on Terry to analyze on n54tech.

that log doesn't look too bad. AFR is a tad high but i've seen worse. what's your OL setting at now? i'm stumped on the map 4 safemode thing. email the csv to Terry@BMS.

[Myaddiction]

Originally Posted by Chipped B6

I'm using the auto tune settings, so I don't see why it should be any different from all the other N54's from your wording. I did email him. I'll turn the auto open loop fueling back on (futureusaA=2) and run it again, this time with 25% ethanol, because when i left it on anything more than 35%, I started maxing fuel trims.

I'll remap it and datalog.

EDIT: Got a response from Terry. All I got to do is datalog when I get the stock tune issue pop up and I'll send them the files.

Glad you got in touch with Terry. I'm sure he'll get things straighten out for you. Just a heads up though If you read the release notes Future Use A =2 turns open loop fueling off:

3) Revised open loop mapping and introduced open loop auto learning system. This will automatically range open loop fueling as a function of fuel trims and other internal parameters. *** NOTE *** In some cars the auto learning may not properly range open loop fueling, triggering false 29F2 fuel pressure codes, and you will need to set it manually. To do this first disable open loop learning by setting FutureUseA = 2. Then start with an open loop setting of 75. If you experience 29F2 codes lower the setting by 5 until they subside. If your fuel trims are stuck over 50, you experience run lean failsafe (2 SES flashes), or encounter frequent 2D25 tuner codes, increase the setting by 5 until they subside. If your high fuel pressure is consistently below 13 when open loop is 75% or higher you likely have a physical fuel pump problem. If you are unable to find a suitable setting to avoid both 29F2 and 2D25 codes you will need to reduce the alcohol content of your fuel (e.g. if mixing in E85 mix in less), lower the all map AFR settings to lean the air/fuel targets, or use a fixed boost map like 1 or 2.
4) Various minor changes related to the above items.

[bigdnno98]

Originally Posted by Myaddiction

Glad you got in touch with Terry. I'm sure he'll get things straighten out for you. Just a heads up though If you read the release notes Future Use A =2 turns open loop fueling off:

3) Revised open loop mapping and introduced open loop auto learning system. This will automatically range open loop fueling as a function of fuel trims and other internal parameters. *** NOTE *** In some cars the auto learning may not properly range open loop fueling, triggering false 29F2 fuel pressure codes, and you will need to set it manually. To do this first disable open loop learning by setting FutureUseA = 2. Then start with an open loop setting of 75. If you experience 29F2 codes lower the setting by 5 until they subside. If your fuel trims are stuck over 50, you experience run lean failsafe (2 SES flashes), or encounter frequent 2D25 tuner codes, increase the setting by 5 until they subside. If your high fuel pressure is consistently below 13 when open loop is 75% or higher you likely have a physical fuel pump problem. If you are unable to find a suitable setting to avoid both 29F2 and 2D25 codes you will need to reduce the alcohol content of your fuel (e.g. if mixing in E85 mix in less), lower the all map AFR settings to lean the air/fuel targets, or use a fixed boost map like 1 or 2.
4) Various minor changes related to the above items.

This