[e92_enthusiast_1]

Was your logging during a 3rd gear WOT pull w/o DTC? And you had corrections on all cylinders in your logs? I think 3 in correction is too much. In general if you have the gas to support it, it should stay near 0. I can't really say about safezones. Our engines are pretty tough even if you ran it as is you'd probably just lose out on a little bit of power.

Originally Posted by tinnsoldaten

New with Cobb AP , just replaced my ESS stage tune with stage 2+ from Cobb, the FMIC LT. I felt the improvment for sure. Shortly after I changed for the OTS E30 map , used calculator to try find amounts of 93 plus E85 to fill.
Went for a spinn and oh boy , beast mode....

Now , for the logging part required while running these E30 maps , I logged some during driving , not sure what info I grabbed but I got some files.

I was specially looking for timing corrections , on all cylinders while driving , highest negative value I got was on cyl 1 , -3,4

Is that in the safesone or do I need to do something ?

Boost maxed out at 1300mBar

Need to beef up my subframe ....

[tinnsoldaten]

First run with logging was with DCT , I turned it off later on next logs I made.

[e92_enthusiast_1]

Switched over to Stg 2+ FMIC Aggressive from Sport and ran some logs. 1st run post shift looks a little messy. Thinking maybe it was still adjusting. 2nd looks ok and 3rd runs looks best much cleaner and that one was after 25 min of driving.

Does anyone think it looks like my actual load is a little low vs load requested? It might be normal but I'll have to go look at my sport logs to double check.

http://datazap.me/u/e92enthusiast1/s...14-16-18-19-20

Also, thinking my dv's might be getting stuck open or something. I hear a hissing, have this surging throttle feeling im trying to track down. Getting some Forge's ordered soon though.

[reeltime]

Any update on if you guys got a map for the newest DME from BMW for the 2011 335is?

[ImGone92]

Hey guys...having some issues wondering if I could get some advice. Pretty new to the bimmer seen.I recently picked up a 09 335i e92, when I got the car I soon after realized it had jb4 on there, hated it btw. Soon after I bought the cobb v2, I have vrsf dps and a kn drop, 93 oct and I'm running stage2 aggressive. Got car with 51k, did plugs ,oil filter housing gasket and valve cover gasket, car was running like a champ, until recently I keep getting "service engine soon" light. I read codes with the access port and says missfire cyl 1,5 and 6 also said fuel pump plausibility. .wtf, juss seeing if anyone had any ideas on what could be the issuse. Thanks.

[Digitalism]

Swap your ignition coils from the problem cylinder to one that isn't. If the code moves to new cylinder then you need to replace coils. If code is still present then it could be injectors.

[silver07335i]

Originally Posted by ImGone92

Hey guys...having some issues wondering if I could get some advice. Pretty new to the bimmer seen.I recently picked up a 09 335i e92, when I got the car I soon after realized it had jb4 on there, hated it btw. Soon after I bought the cobb v2, I have vrsf dps and a kn drop, 93 oct and I'm running stage2 aggressive. Got car with 51k, did plugs ,oil filter housing gasket and valve cover gasket, car was running like a champ, until recently I keep getting "service engine soon" light. I read codes with the access port and says missfire cyl 1,5 and 6 also said fuel pump plausibility. .wtf, juss seeing if anyone had any ideas on what could be the issuse. Thanks.

Misfire in cylinder is typically caused by worn out spark plugs, failing coil packs, intake valve build up, or failing injectors.
If you already changed all spark plugs recently then the misfire could be due to the coil pack. Test the coil pack on cylinder 1 by switching the coil from 1 to 2 and see if the misfire follows the ignition coil. If it does then you need to replace that one and test the other two you mentioned above. If they test out fine then move onto checking injectors.


Cobb diagnosis and repair video: https://www.youtube.com/watch?featur...&v=FsNK1ySAlSo

[ImGone92]

Thanks alot for the info guys...I dropped the car off yesterday at my indi shop, hope whatever is wrong is covered under warranty

[Reckless335]

Did anyone else running Cobb for the first time NOT get the quoted output from Cobb?

I ordered a Cobb AP V3. While waiting for it in the mail I did a baseline dyno. (Dynojet Model 424xLC2) Completely stock with the addition of DCI and muffler delete running 93 octane. Dyno numbers were 289whp and 302wtq. (I can provide a copy of the graph if necessary)

According to Cobb's website, they advertise a 30% gain in horsepower over stock and 38% gain in torque over stock while running stage 1 aggressive. As seen here:
http://www.cobbtuning.com/BMW-N54-Ac...wer-gains-335i

So, my Cobb comes in the mail, I install Stage 1 Aggressive Linear Throttle. Wait a few days and then take it back to the dyno. Same exact dyno, same temperature, same humidity, etc. Still running 93 octane, the only thing that has changed is the Cobb. Dyno numbers are 322whp and 388wtq. (WTF?)

So, based on my baseline numbers 289/302 and doing the math on Cobb's advertised gains (30%/38%) My new numbers should have been 376whp and 417wtq. (Does everyone agree so far?)

So why am I only seeing 322/388? Mathematically those "gains" are only 11.4% horsepower and 28.5% torque gain. So, why am I not seeing Cobb's advertised gains? I'm running Stage 1 aggressive (linear throttle) running the same fuel, same dyno conditions. Only thing that changed was the Cobb. Cobb's website claims 30% gain in horsepower and 38% gain in torque. I only saw 11% horsepower and 28% torque.

I can provide a copy of each dyno graph if needed. 3 runs were done each before and after the Cobb install. (No, I didn't log while on the dyno, I was just running to see the gains) Anyone know what I could have done wrong? I mean Cobb's install was pretty straight forward. Anyone else having these problems? Not seeing the advertised numbers?

[mave198]

Log.

[Reckless335]

Here is another link from Cobb's website showing advertised gains.

https://static.cobbtuning.com/cobbtu...Accessport.pdf

I'm running stage 1 aggressive Linear throttle (6MT) and I'm not even making the advertised gains of the Stage 1 SPORT map...... I'm even less of a gain than the Stage 1 sport for AUTOMATIC..... seriously, does anyone have ANY clue as to why I'm not seeing the gains I paid $900 to see?

[Reckless335]

Originally Posted by mave198

Log.

Thanks. Which parameters should I log? (Sorry for the dumb question, but I've never logged before.)

[mave198]

First use the Cobb's ability to read codes to find any problems first. Alot of times misfires will cause loss of power.

Then log ign timing for all cyl, IATS, AFRs, throttle and boost for starters.

[Allen@MOTIV]

Originally Posted by latino1ny

Thanks. Which parameters should I log? (Sorry for the dumb question, but I've never logged before.)

Log using the default parameters.

[Nishan@MOTIV]

Assuming your car is 100% mechanically sound, there is something to take into consideration here:

No 2 cars are the same even with the same modifications.

No 2 engines are the same nor are 2 turbos the same. Nothing in this world is perfect.

Some cars will achieve more boost on an OTS map while others will achieve less even though the maps settings are the same.

One turbo might achieve 16 PSI with X amount of duty cycle to the wastegate solenoids while another achieves 18, with the same modifications.

OTS maps are just starting point calibrations.

COBB does their best to create a solid, universal OTS map based upon as much testing they can do on in-house test vehicles. They cannot control how other cars out in the wild will respond but that is the point of tuning, every car needs its own purpose built calibration.

Perhaps you might see a 10% gain or a 30% gain, the point is that you saw a gain. How much of a gain you experience will vary from car to car.

Custom tuning will open a whole new world once you extract the most from the setup you are running.

Most people tend to think of the AccessPort as a "flash tuner" when in reality it is nothing more than a communication device to read, write, and view/log information to and from the DME.

The idea is that you get a custom Pro Tune or tune the vehicle yourself using AccessTuner editing software.

Once you get a custom tune and optimize the setup, you will see gains beyond those of advertised OTS maps.

[Reckless335]

Originally Posted by mave198

First use the Cobb's ability to read codes to find any problems first. Alot of times misfires will cause loss of power.

Then log ign timing for all cyl, IATS, AFRs, throttle and boost for starters.

I don't have a CEL on the dash, and spark plugs were changed prior to installing the Cobb. I don't see a reason to read codes. I'm not throwing any.

Originally Posted by Allen@PTF

Log using the default parameters.

Thank you. I'll try that. I'm assuming I just go to to "gauges" screen and hit the middle button to "start logging" ?

Originally Posted by Nishan@PTF

Perhaps you might see a 10% gain or a 30% gain, the point is that you saw a gain. How much of a gain you experience will vary from car to car.

I would VERY MUCH agree with you here, except for one thing..... Cobb doesn't advertise UP TO X amount of gains. They advertise hard figures. I looked all over their website for any loopholes in their claims. Words like "up to" or "you may see" or "an average of", etc. It's not there. Cobb advertises HARD FIGURES on a STOCK motor. When choosing a tune, I considered many things. One of these was the advertised gains. Had I known I was only going to see the gains I did, I mine as well have gone with JB4, for the price, an 11% gain would have been almost half the price I paid for my Cobb.

I'm not disagreeing with your logic. I understand that no two things are the same. But as advertised, I should have seen at least those figures. If Cobb had used other verbiage such as "up to" I would understand that my car was one of those cases that didn't gain the full potential. If they had used "an average of" I would have known that I must have been on the lower spectrum of the average. But they don't. They advertise HARD FIGURES of 30% horsepower and 38% torque on their OTS map (that I'm currently running) with no other mods. That tells me as a consumer, that if I take a stock 335 N54 from the factory, run a baseline, and throw on a Cobb, and do another dyno run, that I should see their advertised gains. I would understand if my gains would have been CLOSE. Maybe 28% horsepower and 35% torque. Sure I'd be happy. But I saw 11% gain in horsepower (that's ONE THIRD of the advertised gain) and 28% torque, 3/4 of what was advertised. Putting it in perspective, I'm sure Cobb wouldn't be happy if I only paid one third of their asking price for their product.

Your logic of "the point is that I saw a gain" is ludicrous. When you go from a stock air box to a DCI you see a gain. Is it a $900 gain? NO. But it's a gain, correct? The consumer expects the product to perform as advertised. The intent of my original post was to see if this is a common problem with Cobb (if people are seeing FAR less gains than advertised) or if I possibly got a faulty unit. I'll do some logs this weekend and see what I come up with.

[bokyo1987]

They stated "Typical Stage1 vs Stock power." And if they base their projected numbers on their in-house testing, there's a caveat... they also stated that "Results may vary based on conditions such as..."

As was already stated, cars are not exactly alike coming out of the factory nor do they respond to mods in exactly the same way. Some will make more power, some less.

[Nishan@MOTIV]

Again, as I mentioned, no two cars are one the same.

Perhaps your local fuel quality is not up to par and you are experiencing consistent timing corrections robbing you of horsepower and torque or leaks are present.

Point being, we don't know.

Your datalog will tell more.

The AccessPort is not a device to which you flash an OTS map and experience all it has to offer.

OTS maps are starting point calibrations that are intended to introduce the user to the world of custom tuning.

Pro Tuners and AccessTuner Race software exist for that very reason.

Originally Posted by bokyo1987

As was already stated, cars are not exactly alike coming out of the factory nor do they respond to mods in exactly the same way. Some will make more power, some less.

This.

[BQTuning]

Originally Posted by latino1ny

According to Cobb's website, they advertise a 30% gain in horsepower over stock and 38% gain in torque over stock while running stage 1 aggressive. As seen here:
http://www.cobbtuning.com/BMW-N54-Ac...wer-gains-335i

So, my Cobb comes in the mail, I install Stage 1 Aggressive Linear Throttle. Wait a few days and then take it back to the dyno. Same exact dyno, same temperature, same humidity, etc. Still running 93 octane, the only thing that has changed is the Cobb. Dyno numbers are 322whp and 388wtq. (WTF?)

So, based on my baseline numbers 289/302 and doing the math on Cobb's advertised gains (30%/38%) My new numbers should have been 376whp and 417wtq. (Does everyone agree so far?)

I think the problem here on why you are seeing a deviation in your math is because your comparing HP/TQ numbers with WHP/WTQ numbers. One is power at the crank and the other is power to the wheels

Cobb's numbers are crank rated numbers in hp/tq

whp/wtq numbers are always 15%-20% less than the crank numbers due to driveline power loss depending if your AT, MT, or DCT and health

[chepy24]

quick question guys upgraded to a v3 added the 2 parameters that ptf asks you to add to logs and it will not let me log it tells me that i can only monitor 21items if i do 22 or 23 i get an error when trying to log. didnt have this problem with the v2 any thoughts?

[_ink]

So how do you send and share maps? I get why some maps need to be locked (for pro tuners). But what about friends/members sharing maps?

[Jeffman]

Originally Posted by chepy24

quick question guys upgraded to a v3 added the 2 parameters that ptf asks you to add to logs and it will not let me log it tells me that i can only monitor 21items if i do 22 or 23 i get an error when trying to log. didnt have this problem with the v2 any thoughts?

You may need to reduce the number of parameters you are displaying - these also count in the number of parameters you can log.