[benzy89]

Originally Posted by dfv2

We would be sharing alternative fuel maps, remote tuning, finding and reporting flaws, and pushing the hardware market to deliver cost effective turbo options.

Originally Posted by ragingpanda

I'd still like to see what kind of gains can be had from a protune over a OTS Stage 2+ map.

+1. If you do get ProTuned, does that custom map get saved to your AP? That way you could run Sport Maps, Aggressive Maps + then your ProTune Map(s). This way you could have a maps specific to Race Gas, E85/Alternative Fuel & then Max Performance Pump Gas. If anyone knows if this is true/how ProTuning works, I'd probably be a lot more inclined to go get it done.

[skinrock]

I'm heading to Cobb tomorrow for a custom tune, so I'll have some info. Unfortunately we only have 91 octane, but I'm still hoping for a big improvement. I'll try to get a Stage2+ Sport dyno along with a baseline to see what the various differences are - I don't even know what my current Stage2+ Sport OTS is putting down, I only have a previous dyno from my JB4 to compare to.

[benzy89]

Answered my own question...

Originally Posted by COBB Tuning

Tuners can modify OTS calibrations and create multiple maps to accommodate different bolt-on parts, turbo-upgrades, fuel types, throttle response, environments, fuel economy, etc. Once tuning is complete, all of the custom maps can be loaded onto the AccessPORT and prepare the driver for any situation. With the unmatched features and convenience of the AccessPORT, COBB Tuning's exceptional customer support, and the addition of true DME control with our powerful new AccessTUNER Pro custom-tuning software, BMW N54 engine tuning just got real!

[AU335i]

Originally Posted by Zeph

I also live in Alabama and I have noticed that adding race gas to the mix seems to help the car run smoother and stronger. I mixed some 100 octane (ethanol free, detergent free, pure "gas") with some 93 octane to achieve an approximate 96-97 octane mix and I trapped at 114 mph at the drag strip. I went back a couple of months later with just regular 93 and was only trapping 110 (I do blame a little on the heat... but still it is a load based tune unless I was hitting the boost limit). I run stage 2+ aggressive. I also tried the new beta maps and actually dropped to 108/109 mph. Put 3.01 back on and immediately car ran 110 again. I am avoiding the beta maps for now. With regular 93 (almost always Shell, occasionally Chevron) I get the oscillations at lower RPM's when I floor it... especially in like 4th gear. With race gas I noticed no oscillations. I do have all new injectors and plugs (maybe 4 months ago, less than 5k miles on them).

I think the Cobb stg 2+ aggressive map is slightly too much for the 93 we have, and the summer heat definitely seems to contribute to that issue. If i am even considering racing or going to the track I go add about 5 gallons of 100 octane race gas to my tank. It is almost like in Texas they have 93.5 and here we have 92.5 and so I try to have at least 95 octane as insurance if nothing else... both to satisfy the tune and for heat.

Zeph

what part of alabama? and yeah i think the gas quality at least in the central alabama part is definitely not that great haha

[sofresh]

finally able to get out and datalog for the 2nd time lol. running cobb stage 1. any feedback is appreciated. also, what is tps actual? thanks in advance

[Lulz_M3]

Originally Posted by ragingpanda

I'd still like to see what kind of gains can be had from a protune over a OTS Stage 2+ map.

Oh and there are no shops in Florida that protune BMW's.

Check out the regional FL forum and vote in BuraQ's thread, he might have a shop that will make the investment in APT if there is enough interest.

[Lulz_M3]

Originally Posted by sofresh

finally able to get out and datalog for the 2nd time lol. running cobb stage 1. any feedback is appreciated. also, what is tps actual? thanks in advance.

sofresh, try cleaning up that graph, when the car shifts it sends parameters allover the place so it throws the scaling way off. To do this - view the log in excel and view the column that shows accel pedal position (or whatever its abbreviated to). Delete all rows that are less than 77, then regraph the log and it should look much cleaner. What gears did you use this time? Next time you log, try to focus on starting at around 2k in 3rd gear and run it to 6 or 6.5k, doesnt hurt to log the 3-4 shift also.

[sofresh]

Originally Posted by Lulz_M3

sofresh, try cleaning up that graph, when the car shifts it sends parameters allover the place so it throws the scaling way off. To do this - view the log in excel and view the column that shows accel pedal position (or whatever its abbreviated to). Delete all rows that are less than 77, then regraph the log and it should look much cleaner. What gears did you use this time? Next time you log, try to focus on starting at around 2k in 3rd gear and run it to 6 or 6.5k, doesnt hurt to log the 3-4 shift also.

ok thanks. I used 2&3rd gear..

[farb]

Hey guys, quick question. Does cobb have a specific map for e85??

[E90SoFlo]

Originally Posted by farb

Hey guys, quick question. Does cobb have a specific map for e85??

Not yet

[benzy89]

Originally Posted by farb

Hey guys, quick question. Does cobb have a specific map for e85??

Originally Posted by E90SoFlo

Not yet

^1/2 Right & 1/2 Wrong -- COBB does NOT offer E85 OTS Maps as of right now. BUT if you go to a ProTuning facility (http://www.cobbtuning.com/Pro-Tuners-s/70681.htm#BMW) and bring them your car w/ E85 in the tank, they'll be able to make you a custom E85 map.

[enrita]

Originally Posted by farb

Hey guys, quick question. Does cobb have a specific map for e85??

all available maps are on their site.

[rader1]

Originally Posted by sofresh

finally able to get out and datalog for the 2nd time lol. running cobb stage 1. any feedback is appreciated. also, what is tps actual? thanks in advance

"TPS" is throttle position sensor actual. It shows what position the throttle blade is.
You're having serious throttle closures. Did you have traction control disabled?


Also, you had a timing correction. Log cylinder 1-6 timing corrections for a better idea of how the timing really looks.

[AWD Addict]

Originally Posted by benzy89

Whatever, I really am not one to pick fights over the internet and get laptop muscles. We're all COBB users & want the best performance from our cars without blowing them. If you go back, BlackBB6 & AU335i both agreed that the NOS race formula octane booster is 60 points (ignoring the quality or impact it has). The Top Tier Gas thing wasn't for since clearly you know octane & how to bump it up with authentic additives

Me neither (most of hte time. )

@ laptop muscles.



So I guess where I'm stuck on this, is I thought the Cobb tune would still allow for timing control to occur depending on knock sensing. It appears from some posts here, that the Cobb tune locks into a timing setting, rather than adjust, which would obviate the benefit of increased octane.

If that's the case, how do all the timing pulls occur that we see on posted up data logs?

[rader1]

Originally Posted by AWD Addict

Me neither (most of hte time. )

@ laptop muscles.



So I guess where I'm stuck on this, is I thought the Cobb tune would still allow for timing control to occur depending on knock sensing. It appears from some posts here, that the Cobb tune locks into a timing setting, rather than adjust, which would obviate the benefit of increased octane.

If that's the case, how do all the timing pulls occur that we see on posted up data logs?

The timing is following a timing table. On stage 2+ aggressive it targets ~6 in the mid range and ~11 near redline. If something happens that the DME doesn't like the it will make a correction in that cylinder. If everything is good it will follow the timing table. If 93 is enough to not have a correction then race gas will do nothing. It will not advance beyond what is targeted.

[benzy89]

Originally Posted by AWD Addict

So I guess where I'm stuck on this, is I thought the Cobb tune would still allow for timing control to occur depending on knock sensing. It appears from some posts here, that the Cobb tune locks into a timing setting, rather than adjust, which would obviate the benefit of increased octane.

If that's the case, how do all the timing pulls occur that we see on posted up data logs?

Where'd you see this. This is going to be a very dumbed down version of the COBB tune, but I thought it basically flashes the DME, increases the performance settings (increase boost, air:fuel ratios, etc), but leaves in place the OEM safety settings (knock sensory/prevention)?

[mikead_99]

Originally Posted by skinrock

I'm heading to Cobb tomorrow for a custom tune, so I'll have some info. Unfortunately we only have 91 octane, but I'm still hoping for a big improvement. I'll try to get a Stage2+ Sport dyno along with a baseline to see what the various differences are - I don't even know what my current Stage2+ Sport OTS is putting down, I only have a previous dyno from my JB4 to compare to.

I'd love to see plots for the OTS vs custom as well as the JB4 dyno. Migrated from JB myself, but added mods at that same time so I really can't make a fair compare. Not too worried if I left anything on the table or not, just curious to see another comparison.

[COBB Tuning]

Originally Posted by dfv2

Bump for news or ETA of the following:

ATR
v4 maps out of beta
fabled "race" or meth maps?

OR

Bump for the answer to whether I will go the full length of summer waiting for the above while the piggy fans get xmas twice a month!!

1. ATR is very, VERY close! And not our usual "coming soon", but a real coming soon.
2. v4 maps will come out of Beta as soon as we finish testing the boost oscillation fix and tracing the ECU for some more timing logic. Both of those fixes are currently testing.
3. Meth maps are in progress! The car is on the dyno and hopefully I'll have some pictures for you guys early next week.

Ian

[COBB Tuning]

In regards to 100% E85 tuning, an injector scalar will need to be added to AccessTUNER to allow this. That is in progress, but we have a few other things higher on the priority list. Right now, an E85 mix could be custom tuned.

The AccessTUNER Tuning Guide is a great doc to read for some starter tips when ATR is released and what is available to be tuned in the software.

Ian

[E90SoFlo]

Originally Posted by COBB Tuning

In regards to 100% E85 tuning, an injector scalar will need to be added to AccessTUNER to allow this. That is in progress, but we have a few other things higher on the priority list. Right now, an E85 mix could be custom tuned.

The AccessTUNER Tuning Guide is a great doc to read for some starter tips when ATR is released and what is available to be tuned in the software.

Ian

welcome back rob!

can't wait!

[benzy89]

Originally Posted by COBB Tuning

v4 maps will come out of Beta as soon as we finish testing the boost oscillation fix and tracing the ECU for some more timing logic. Both of those fixes are currently testing.

Ian

Thank you COBB, new OTS maps = Christmas in June (hopefully?)

[sofresh]

Originally Posted by rader1

"TPS" is throttle position sensor actual. It shows what position the throttle blade is.
You're having serious throttle closures. Did you have traction control disabled?


Also, you had a timing correction. Log cylinder 1-6 timing corrections for a better idea of how the timing really looks.

ok will do. I am pretty sure I turned DTC disabled. I will try this again and make sure also to long the cylinders. thanks