[COBB Tuning]

The v4.01 and v4.02 Off-The-Shelf maps for BMW N54 AccessPORTs have been promoted to General Release. The v4.01 and v4.02 maps now supersede v3.01 maps, which have been archived. COBB Tuning recommends upgrading to the latest version of the maps for optimal performance. These maps can be downloaded from the BMW AccessPORT Off-The-Shelf Map Database. For instructions on downloading maps, transferring them to the AccessPORT and flashing them to the BMW ECU, please see the Step-by-Step Map Download and Install Tutorial.

[nitehawk]

Time to get ProTuned

[marcvtec]

whats changed in these maps ?

[ihc95]

So what are the main differences between the v3.01 and the v4.01/v4.02 maps?

[COBB Tuning]

Originally Posted by ihc95

So what are the main differences between the v301 and v401/v402?

The v4.01 maps correct the DME logic that was causing DTC P2D59 codes as well as addresses the under-boost issue some vehicles were experiencing.

The v4.02 maps incorporate tuning strategy changes that eliminate the boost oscillation issues that some v4.01 Stage1+ and Stage2+ map users were experiencing.

Thanks,

Gary

[BobS]

Nice......

Btw If you have a Cobb and you aren't protuned, your really missing out, trust me!

[georgelb]

Are there map notes that include the estimated output for Stage1+ and Stage2+? The links go to the same notes as Stage1 and Stage2, respectively.

[vasillalov]

[nikitino25]

Did the v4. 02 maps change at all from the beta stage? Do l! Need to re-download my v4. 02 map?

[ajsalida]

Originally Posted by nikitino25

Did the v4. 02 maps change at all from the beta stage? Do l! Need to re-download my v4. 02 map?

+1

[sofresh]

at the dealership right now.. can't wait to get home and update..

[benzy89]

COBB FTW! Got 2 presents in the past 24 hrs:

1. E85 Fueling Support
2. Approved v402 Maps

So glad this is my tune of choice

[COBB Tuning]

Originally Posted by nikitino25

Did the v4. 02 maps change at all from the beta stage? Do l! Need to re-download my v4. 02 map?

No changes other than the name change from beta to release.

-Josh

[Wookie420]

Originally Posted by COBB Tuning

No changes other than the name change from beta to release.

-Josh

[x-ception]

Any OTS maps for e85 mixture? or pro tuning is the only way to get them

[COBB Tuning]

Originally Posted by x-ception

Any OTS maps for e85 mixture? or pro tuning is the only way to get them

Due to the variances in E85 around the country, we won't be making OTS maps. However, you can get pro-tuned or use ATR yourself to make the changes to the fuel scalar.

-Josh

[new2the3]

Originally Posted by x-ception

Any OTS maps for e85 mixture? or pro tuning is the only way to get them

So far only protune or do it yourself tune, but I hope they make an OTS one!

[benzy89]

Originally Posted by x-ception

Any OTS maps for e85 mixture? or pro tuning is the only way to get them

COBB announced in the "Alternative Fueling" thread they made (http://www.e90post.com/forums/showthread.php?t=723183) that there will be no OTS E85 maps because of possible differences in the quality of E85 fuels. It's not like 91/93 octane pump gas where there's an established & strictly defined raito. If you also look at an E85 pump, there's a legal disclaimer that states the ethanol content can be as high as 85% but as low as XXXX %

Short Version: Only way to get an E85 Map is to make it yourself OR get ProTuned

[MDORPHN]

Originally Posted by benzy89

COBB announced in the "Alternative Fueling" thread they made (http://www.e90post.com/forums/showthread.php?t=723183) that there will be no OTS E85 maps because of possible differences in the quality of E85 fuels. It's not like 91/93 octane pump gas where there's an established & strictly defined raito. If you also look at an E85 pump, there's a legal disclaimer that states the ethanol content can be as high as 85% but as low as XXXX %

Short Version: Only way to get an E85 Map is to make it yourself OR get ProTuned

Found this on another site:

SUMMER BLEND VS. WINTER BLEND

One topic we have not seen discussed in detail is the difference in tuning requirements for various blends of E85 that change with the season. During the cold winter months, more gasoline is added to E85 by the fuel distributor before it gets to the station pumps. This is to aide in cold weather starting where ethanol vapors are less than adequate for starting conditions. For a true flex fuel vehicle there is a sensor that reads this ratio of ethanol and adjusts an internal ethanol table used to modify fuel and timing tables for proper fuel burn. Mustangs are not currently setup with this sensor or the ethanol table so you must be aware of what mixture is in your tank, in order to ensure the tune is correct for the fuel mixture.

The blend changeover triggers a change in the AFR because the ethanol percentage varies from 70% to 85% depending on the seasonal temperatures where you live. 70% ethanol content is the minimum percentage rating for Winter Blend E85. There is a middle grade (class 2) during Spring and Fall with a minimum of 74% ethanol. Summer Blend has a minimum of 79% but all variations are still called E85 for a recognizable common name. This changeover of blends varies per climate (NY goes to Winter Blend much sooner than Georgia).

Neil

[benzy89]

I mean, here's what COBB said (reiterates what was said in that last sentence)

Originally Posted by COBB Tuning

Due to variation in fuel blends across the country, E85 Off-The-Shelf maps will not be available for download. Instead, the end-user is empowered to tune specifically for the fuel blend at their favorite fuel source using AccessTUNER software and data-logging to ensure proper performance.

[OfficialBOLO]

so much win.

[pHo_e92]

YAY!!! Loving the v4.02 maps. soooooo buttery smoooooth.