[chris23023]

This is my first posted Log, Looking for input. I do not have HPFP or LPFP logged, as they are both holding up fine.

Log: http://datazap.me/u/chris23023/7914-...10-11-12-13-14

75 degree ambient , 840ft above MSL

Tune: Cobb OTS E30

Mods: 36K miles, New plugs (300 miles max), FMIC, and DP's, 91 non ox + 30% Eth

How do they look? I feel timing corrections are an issue, and boost is higher than where I want it, but I will allow the pro's to give feedback

Thanks

[135Pats]

Originally Posted by chris23023

This is my first posted Log, Looking for input. I do not have HPFP or LPFP logged, as they are both holding up fine.

Log: http://datazap.me/u/chris23023/7914-...10-11-12-13-14

75 degree ambient , 840ft above MSL

Tune: Cobb OTS E30

Mods: 36K miles, New plugs (300 miles max), FMIC, and DP's, 91 non ox + 30% Eth

How do they look? I feel timing corrections are an issue, and boost is higher than where I want it, but I will allow the pro's to give feedback

Thanks

There's a brief overshoot followed by some throttle trim, if it's doing that over and over look into the PID tables and adjust as is needed.

You have some relatively minor corrections across multiple cylinders. Were I to guess, i'd say you are probably a bit tight on octane. Goal is to end up with E30 in the tank, not 30% E85 + 91 Pump. That won't get you E30. I would highly encourage you to log HPFP and LPFP PSI even if you feel they are holding well. If the high pressure side starts to crash that's something you need to be aware of quickly.

[chris23023]

Originally Posted by 135Pats

There's a brief overshoot followed by some throttle trim, if it's doing that over and over look into the PID tables and adjust as is needed.

You have some relatively minor corrections across multiple cylinders. Were I to guess, i'd say you are probably a bit tight on octane. Goal is to end up with E30 in the tank, not 30% E85 + 91 Pump. That won't get you E30. I would highly encourage you to log HPFP and LPFP PSI even if you feel they are holding well. If the high pressure side starts to crash that's something you need to be aware of quickly.

Thank you for your response. As far a ethonol, I calculated the amount using intercepteft. Com so hopefully the percent is correct. I dropped the fuel pumps to be able to see throttle. I'm assuming the throttle closure is caused by the overshoot? My plan is on my next tank will be to adjust to E35 (and tweak scholar accordingly) and then trim out over boost. Hopefully throttle closure will go away, as well as the timing corrections. I guess we shall see

[135Pats]

Originally Posted by chris23023

Thank you for your response. As far a ethonol, I calculated the amount using intercepteft. Com so hopefully the percent is correct. I dropped the fuel pumps to be able to see throttle. I'm assuming the throttle closure is caused by the overshoot? My plan is on my next tank will be to adjust to E35 (and tweak scholar accordingly) and then trim out over boost. Hopefully throttle closure will go away, as well as the timing corrections. I guess we shall see

I like that plan. Get a little more octane in there, it never hurts and once you start to get more towards E40, it becomes pretty darn knock proof at the advance and boost levels Cobb OTS maps push. So at that point we could rule out it being octane, and at those charge temps it's not the IAT comp tables.

Can you log WGDC? Load looks OK to me.

[e92_enthusiast_1]

I tried to get a datalog today but i'm not sure what happened. When i got home the datalog1.csv file was 0kb and when i tried to transfer it to the laptop it said failed to copy from AccessPort.

I think I read it might have to do with the gauges im running interfering with logging? I use 6 (boost, boost delta, boost req, AFR, CAT, WGDC) so it's a lot. Going to try again but changing to 1 gauge and try a few times.

Anyone seen this symptom before?

[Allen@MOTIV]

Originally Posted by e92_enthusiast_1

Allen,

Thx again BTW. OK I'm pretty sure I'm crazy now. Hitting 16psi in 2nd gear just fine. What i think it might have been is that 2nd gear goes so fast that im pretty sure i just wasnt giving it enough throttle to get it to build up quick enough. Im using Stock Throttle map and Idk if that has anything to do with it.

I'm relieved as I thought maybe something had come loose or had broken lol.

I am still going to try and find a decent spot to get a good log. I want to be able to read those and understand what my cars thinking.

Ive also heard great things about getting a pro tune by your group but before i go deeper into the tune hole i want to learn the tune basics with the OTS maps. So ill do some logging and get some opinions first.

Shout out to this thread. Everyone on here is very helpful.

Bad news is I think I'm addicted now. I want to try ethanol at some point. Heard great things about it.

Originally Posted by e92_enthusiast_1

I tried to get a datalog today but i'm not sure what happened. When i got home the datalog1.csv file was 0kb and when i tried to transfer it to the laptop it said failed to copy from AccessPort.

I think I read it might have to do with the gauges im running interfering with logging? I use 6 (boost, boost delta, boost req, AFR, CAT, WGDC) so it's a lot. Going to try again but changing to 1 gauge and try a few times.

Anyone seen this symptom before?

When logging the best channels to log are the default PIDs. Reset to the default logging lost and go with that. When logging you will have to press the center button once to make it "ready" and then press it again to start recording. After getting a log I can walk you through the values and what it's telling you. Probably the best way to share it on the forums is by using www.datazap.me

[e92_enthusiast_1]

Thanks Allen, will do it again today. I think i messed up then and only got it ready and never started recording and later i hit it again thinking i had stopped it. Will report back soon!

Originally Posted by Allen@PTF

When logging the best channels to log are the default PIDs. Reset to the default logging lost and go with that. When logging you will have to press the center button once to make it "ready" and then press it again to start recording. After getting a log I can walk you through the values and what it's telling you. Probably the best way to share it on the forums is by using www.datazap.me

[e92_enthusiast_1]

I think I figured it out and got it this time. From reading the datalogging thread I think the tune is doing ok and timing is ok. I see a little correction in the beginning but what im worried about is after chagning to 4th gear idk there's a lot of corrections but is that normal there was i supposed to shift and keep WOT cause i just kinda let off after shifting? Through the middle looks at 0. Req boost vs act boost i think is ok :shrug: TPS Act % 81% across I think. Charge Air Temps ok too i think.

Let me know if things look solid or if there is any other parameters I missed in the log that might help. This will probably nudge me into protune territory to dial it in if it is.

Here is a link to the datazap I created:
http://datazap.me/u/e92enthusiast1/stg-2-fmic-st-sport

Originally Posted by Allen@PTF

When logging the best channels to log are the default PIDs. Reset to the default logging lost and go with that. When logging you will have to press the center button once to make it "ready" and then press it again to start recording. After getting a log I can walk you through the values and what it's telling you. Probably the best way to share it on the forums is by using www.datazap.me

[Allen@MOTIV]

Originally Posted by e92_enthusiast_1

I think I figured it out and got it this time. From reading the datalogging thread I think the tune is doing ok and timing is ok. I see a little correction in the beginning but what im worried about is after chagning to 4th gear idk there's a lot of corrections but is that normal there was i supposed to shift and keep WOT cause i just kinda let off after shifting? Through the middle looks at 0. Req boost vs act boost i think is ok :shrug: TPS Act % 81% across I think. Charge Air Temps ok too i think.

Let me know if things look solid or if there is any other parameters I missed in the log that might help. This will probably nudge me into protune territory to dial it in if it is.

Here is a link to the datazap I created:
http://datazap.me/u/e92enthusiast1/stg-2-fmic-st-sport

Sounds like you have a good understanding of whats going on

The first couple corrections at the start of the pull aren't really of concern but the corrections after the shift aren't pretty. During and immediately post shift are two of the most common times to spot corrections because of the sudden drop and jump in load. I see you're in AZ, I assume you're running 91ACN fuel. The "sport" map is designed for use with regular 91 and looks to be a little too much for ACN fuel.

Aside from the corrections it looks pretty good.

[e92_enthusiast_1]

Thanks for the follow up. That is a bummer really about the gas. I know we have an e85 station so I will try and raise the octane a little. I'm just not sure how often I'm gonna be filling up at that station. Might just try the non sport map.

I have some room in the tank. Is it not ideal to mix the e85 after? in other words should I wait til its almost empty and do e85 the first few gallons?

Originally Posted by Allen@PTF

Sounds like you have a good understanding of whats going on

The first couple corrections at the start of the pull aren't really of concern but the corrections after the shift aren't pretty. During and immediately post shift are two of the most common times to spot corrections because of the sudden drop and jump in load. I see you're in AZ, I assume you're running 91ACN fuel. The "sport" map is designed for use with regular 91 and looks to be a little too much for ACN fuel.

Aside from the corrections it looks pretty good.

[bplant13]

Originally Posted by Bimmer305

If you want to do it right, first thing would be to map your X axis accordingly to your load request (your ideal boost curve).

Log a full run 3 to 5 gear, and then map your x axis accordingly, so you hit your target on 3rd gear but don't overshoot on 5th.
Example I mapped mine 189 200 222 290 320 400

Thanks. With some help from Cobb's support, and a pro tuner, I was given an alternative, which was to just modify the X-axis of the WGDC Adder and Ceiling first, so not to put the base table out of whack, but still get a little extra DC in the high range. I made minor changes today and got a few runs in, and it seemed to have helped a bit. I'm going to get it on the dyno soon.

[e92_enthusiast_1]

So after the first run when we noticed major corrections on shift I tried a couple runs after mixing in a few gallons of e85 and it looks better I think. Not sure if no corrections at all is a thing but before it was like -6 across all cylinders now its just -3 across 3 cylinders. What should I be looking for? 0 across all cylinders? Or is this good enough.

Stg 2 FMIC+ ST Sport 91 ACN w/ timing corrections a lot

Stg 2 FMIC+ ST Sport 91ACN + e85 corrections minimal

I'll also do another run tomorrow and throw it up. After the e85 has had a chance to mix in the tank real good.

Here's the latest run after having the e85 mix in the tank for about 24 hours and I think this one looks the best as far as corrections goes. Even through shifting.

Stg 2 FMIC+ ST Sport 91ACN + e85 even less corrections than before

And just as a little anecdote to these engines and tunes right before this last log I had an ///m3 on the highway that was just amazed, he was asking all about what i had. Of course, i told him with the biggest shit eating grin of my life. In straight pulls I was giving him a run and he was impressed.

Originally Posted by Allen@PTF

Sounds like you have a good understanding of whats going on

The first couple corrections at the start of the pull aren't really of concern but the corrections after the shift aren't pretty. During and immediately post shift are two of the most common times to spot corrections because of the sudden drop and jump in load. I see you're in AZ, I assume you're running 91ACN fuel. The "sport" map is designed for use with regular 91 and looks to be a little too much for ACN fuel.

Aside from the corrections it looks pretty good.

[dbworld4k]

Hey guys, loving my Cobb tune so far except one issue that seems to surface infrequently but is severely debilitating and somewhat dangerous (ie. overtaking and totally abrput power cutoff - as if someone yanked the car back). The car ran flawlessly before the tune.

P0238 code (TurboCharger Boost Sensor Circuit High Voltage). In addition, it threw a misfire code (P3100) and a 2ABC (TMap fault?) and a 2AAF (a quick search says to ignore this one as it is not significant). It happens during WOT, and only about 10% of the time if not less. The symptoms are a sudden cut-off of power and the car abruptly yanks as if someone slammed the brakes. Then it goes into Limp Mode (reduced power).

Restarting the car puts it back into normal mode and it can be driven WOT for a while before re-triggering. There are no other drivetrain mods to the car; stock DPs, stock FMIC.

Any help??

[e92_enthusiast_1]

You should create a separate thread imo, it will get more views than on this one since the title isn't anything related to your issue.

On it include maintenance history, plugs/coils age. What map you flashed. Whether or not uninstalling the COBB gets rid of the issue. What about just flashing Stg 0. All this would be helpful.

Originally Posted by dbworld4k

Hey guys, loving my Cobb tune so far except one issue that seems to surface infrequently but is severely debilitating and somewhat dangerous (ie. overtaking and totally abrput power cutoff - as if someone yanked the car back). The car ran flawlessly before the tune.

P0238 code (TurboCharger Boost Sensor Circuit High Voltage). In addition, it threw a misfire code (P3100) and a 2ABC (TMap fault?) and a 2AAF (a quick search says to ignore this one as it is not significant). It happens during WOT, and only about 10% of the time if not less. The symptoms are a sudden cut-off of power and the car abruptly yanks as if someone slammed the brakes. Then it goes into Limp Mode (reduced power).

Restarting the car puts it back into normal mode and it can be driven WOT for a while before re-triggering. There are no other drivetrain mods to the car; stock DPs, stock FMIC.

Any help??

[ajsalida]

+1. Also which map and level is being run, octane of fuel, MT or AT, etc.

[dbworld4k]

Fair enough. When I searched, it kept hitting results in this thread but obviously I wasn't going to sift through 390pgs, lol. So I thought I it would be better to post here than create a thread for the same potential issues.

But I will do so now!

[deepocean]

guys

today while driving the car i had p30ff code boost leak anyway i read a lot and unmarried the access-port everything went fine,, am ruining stag 1 + fmic sport with 98 octane,, anyway i will check all the vacuum lines and will order the RB diverter valves ,, will give a try

guys here is attached my datalog i wish someone can support ready it and explain

regards

Rani

https://drive.google.com/file/d/0B8a...it?usp=sharing

[deepocean]

i guess there is nothing important in the attached

[e92_enthusiast_1]

Good read here: http://blog.protuningfreaks.com/2012...ogging-part-1/

After reading through that Im convinced the e85 addition helped and im happy with my datalogs.

Originally Posted by Allen@PTF

Sounds like you have a good understanding of whats going on

The first couple corrections at the start of the pull aren't really of concern but the corrections after the shift aren't pretty. During and immediately post shift are two of the most common times to spot corrections because of the sudden drop and jump in load. I see you're in AZ, I assume you're running 91ACN fuel. The "sport" map is designed for use with regular 91 and looks to be a little too much for ACN fuel.

Aside from the corrections it looks pretty good.

Originally Posted by e92_enthusiast_1

So after the first run when we noticed major corrections on shift I tried a couple runs after mixing in a few gallons of e85 and it looks better I think. Not sure if no corrections at all is a thing but before it was like -6 across all cylinders now its just -3 across 3 cylinders. What should I be looking for? 0 across all cylinders? Or is this good enough.

Stg 2 FMIC+ ST Sport 91 ACN w/ timing corrections a lot

Stg 2 FMIC+ ST Sport 91ACN + e85 corrections minimal

I'll also do another run tomorrow and throw it up. After the e85 has had a chance to mix in the tank real good.

Here's the latest run after having the e85 mix in the tank for about 24 hours and I think this one looks the best as far as corrections goes. Even through shifting.

Stg 2 FMIC+ ST Sport 91ACN + e85 even less corrections than before

And just as a little anecdote to these engines and tunes right before this last log I had an ///m3 on the highway that was just amazed, he was asking all about what i had. Of course, i told him with the biggest shit eating grin of my life. In straight pulls I was giving him a run and he was impressed.

[Allen@MOTIV]

Originally Posted by e92_enthusiast_1

So after the first run when we noticed major corrections on shift I tried a couple runs after mixing in a few gallons of e85 and it looks better I think. Not sure if no corrections at all is a thing but before it was like -6 across all cylinders now its just -3 across 3 cylinders. What should I be looking for? 0 across all cylinders? Or is this good enough.

Stg 2 FMIC+ ST Sport 91 ACN w/ timing corrections a lot

Stg 2 FMIC+ ST Sport 91ACN + e85 corrections minimal

I'll also do another run tomorrow and throw it up. After the e85 has had a chance to mix in the tank real good.

Here's the latest run after having the e85 mix in the tank for about 24 hours and I think this one looks the best as far as corrections goes. Even through shifting.

Stg 2 FMIC+ ST Sport 91ACN + e85 even less corrections than before

And just as a little anecdote to these engines and tunes right before this last log I had an ///m3 on the highway that was just amazed, he was asking all about what i had. Of course, i told him with the biggest shit eating grin of my life. In straight pulls I was giving him a run and he was impressed.

The E85 mix log definitely looks the best. Whenever you begin mixing in E85 it becomes important to add STFT bank 1 or 2 to the logging list. The non-E30 maps are using a fuel scalar designed for use with E10 or ethanol free gas in mind and fueling headroom is reduced with that scalar. The fuel STFTs max out at 34% and at that value the DME does not have authority to add any more fuel and can begin to lean out.

If you have easy and reliable access to E85 then there is a lot of power left on the table by running the OTS maps.

[e92_enthusiast_1]

Thanks for all your tips/opinions Allen.

e85 accessibility is pretty good around here. It's not everywhere but im never more than 25 miles from a spot.

I definitely have some things to learn. I will do more logging with STFT and go from there.

I see COBB has some e30 maps on their site. I might move up to that after a bit.

My goal is to eventually be knowledgeable enough to use Accesstuner and customize something to my setup/environment.

Originally Posted by Allen@PTF

The E85 mix log definitely looks the best. Whenever you begin mixing in E85 it becomes important to add STFT bank 1 or 2 to the logging list. The non-E30 maps are using a fuel scalar designed for use with E10 or ethanol free gas in mind and fueling headroom is reduced with that scalar. The fuel STFTs max out at 34% and at that value the DME does not have authority to add any more fuel and can begin to lean out.

If you have easy and reliable access to E85 then there is a lot of power left on the table by running the OTS maps.

[Allen@MOTIV]

Originally Posted by e92_enthusiast_1

Thanks for all your tips/opinions Allen.

e85 accessibility is pretty good around here. It's not everywhere but im never more than 25 miles from a spot.

I definitely have some things to learn. I will do more logging with STFT and go from there.

I see COBB has some e30 maps on their site. I might move up to that after a bit.

My goal is to eventually be knowledgeable enough to use Accesstuner and customize something to my setup/environment.

The E30 maps are a good bump in power. They are designed for a FBO car, though. If playing with them keep a close on the logs. The risk of any engine damage is very slight(but still there) but the main concern is drivability. The car just may not feel as smooth or respond as well.

Personally, I highly recommend becoming familiar with ATR if you're comfortable doing so. A really good way to get started is to read the "Help" file included with you ATR download, it covers the basics really well.