JB4 Map 2 or Map 5?

[rhodesman]

Just curious what would be more ideal. I have DP, Intake, DVs, & Charge Pipe. Stock Cat-back Exhaust & inner-cooler.

[darkrom]

Map 5 without IC imo. Map 5 is never the WRONG answer. It'll always be safe and effective at least.

[mike@x-ph.com]

Originally Posted by darkrom

Map 5 without IC imo. Map 5 is never the WRONG answer. It'll always be safe and effective at least.

+1

Map 5 will work with almost all mods, i like it the best as a daily driver because i find it to be the smoothest.

You should try both maps, give yourself couple weeks with each one and then decide which one you like best.

[Jeff@TopGearSolutions]

Best way to see how they are perform is to do a datalog.

3rd gear, wide open throttle from 3000 RPM to red line.

Compare the boost, IAT, ignition information and from there you can get an idea of which is running better.

If you can decipher the difference, just upload the datalogs and have someone here take a look.

[Solo_M_Tech]

You won't find a difference between MAP 2 and MAP 5 as far as boost pressure without a FMIC upgrade ( I didn't) I found Map 2 to be more consistant than Map 5 since map 5 is an auto tune map. It's more dependent on what fuel you use too.

Long story short, run Map 5. it will adapt as you go.

[rhodesman]

Thank you all, Map 5 seems to be a solid map from what you have said and what I've been experiencing. Map 2 has a more consistent boost target, but thats because Map 5 is adjusting boost per air temp and fuel (like you said). I'll do some logs when I have more time.

thanks all!

[yanivvv]

Originally Posted by darkrom

Map 5 without IC imo. Map 5 is never the WRONG answer. It'll always be safe and effective at least.

i have an m235i stock.
for me, map1 is weak from 4th gear and upper.

can i use map 5 (stock car)?
i ask the guys in the jb4 website and they said that i can uae only map 1 with stock car.

[darkrom]

I'm sure they know their own product better than a bunch of people online.

[rhodesman]

I Forgot to update: I did some logs and found an HPFP code and a pressure sensor code. Took it to BMW and they confirmed the fuel pressure sensor was going berzerk and reporting incorrect pressures which sent a domino effect throughout the car's systems to adjust for the erratic numbers which would cause a misfire then limp-mode. After replacing the sensor, things seem to have leveled out. Still went into limp mode once, but it was minutes after installing a new high-flow mid-pipe and I assume had something to do with Map 5's settings for the older midpipe.

Current codes show a too-high pressure reading which from what I have researched is caused by improper trims. I've posted my last 3-4-5 gear run to n54tech in hopes to getting some answers as the data logged is a bit beyond my knowledge of things.

I may end up in Map 6 only because it feels like I'm moving beyond the mod point that the pre-set JB4 maps account for, I could be wrong but as of now, map 2 will throw a code but Map 5 has been solid since the mid-pipe install.

Somehow I find it easier to install, setup and program a rack of blade servers then to program my car. Damn computers are taking over!!! Viva-revolution!

[Mike@N54Tuning.com]

Originally Posted by rhodesman

Just curious what would be more ideal. I have DP, Intake, DVs, & Charge Pipe. Stock Cat-back Exhaust & inner-cooler.

If you have 93 octane then I would do map2 as it has a defined boost profile which I like. IF you can't always put 93 or other people drive the car then map5 might be better.

At the end of the day a good idea would be to log both (map5 first) and then see the boost profiles / curves.

Mike

[lazer]

Does 91 with octane booster can work on map 2? If yes witch compagny?

Or 91 with a little bit of e85 like 1 gallon is good on map 2? Or i could see better result on map 5?

[mike@x-ph.com]

Originally Posted by lazer

Does 91 with octane booster can work on map 2? If yes witch compagny?

Or 91 with a little bit of e85 like 1 gallon is good on map 2? Or i could see better result on map 5?

If you do not have downpipes, run map 1.

[rhodesman]

Originally Posted by Mike@N54Tuning.com

If you have 93 octane then I would do map2 as it has a defined boost profile which I like. IF you can't always put 93 or other people drive the car then map5 might be better.

At the end of the day a good idea would be to log both (map5 first) and then see the boost profiles / curves.

Mike

Thanks Mike! I plan to do just that. As of now I'm going to do a 3rd gear pull in Map 5 then switch to Map 2 and do another. Does that sound like a good idea, or should I allow more time/cool-down before switching and doing the other pull?

[mike@x-ph.com]

Originally Posted by rhodesman

Thanks Mike! I plan to do just that. As of now I'm going to do a 3rd gear pull in Map 5 then switch to Map 2 and do another. Does that sound like a good idea, or should I allow more time/cool-down before switching and doing the other pull?

when changing maps, allow the Jb4 to adapt to the new map before doing any logging

[rhodesman]

Originally Posted by mike@x-ph.com

when changing maps, allow the Jb4 to adapt to the new map before doing any logging

Am I incorrect in thinking only Map 5 needs to adapt? I thought Map 1-4 were more or less hard coded. Am I wrong thinking that?

[mike@x-ph.com]

Originally Posted by rhodesman

Am I incorrect in thinking only Map 5 needs to adapt? I thought Map 1-4 were more or less hard coded. Am I wrong thinking that?

Even if they were hard coded, i would still do couple pulls first. Cobb recommends the same on flash tune which is hard coded as well

[rhodesman]

Originally Posted by mike@x-ph.com

Even if they were hard coded, i would still do couple pulls first. Cobb recommends the same on flash tune which is hard coded as well

Huh...Good to know, Thanks!

[lazer]

Originally Posted by mike@x-ph.com

If you do not have downpipes, run map 1.

Yess already install...dont have 93 here only 91...can i add some octane booster or i need real 93?

[mike@x-ph.com]

Originally Posted by lazer

Yess already install...dont have 93 here only 91...can i add some octane booster or i need real 93?

Octane booster works just make sure you log

[lazer]

Dont have a usb for now

[mike@x-ph.com]

Originally Posted by lazer

Dont have a usb for now

What are you waiting for ?

[Mike@N54Tuning.com]

Originally Posted by rhodesman

Am I incorrect in thinking only Map 5 needs to adapt? I thought Map 1-4 were more or less hard coded. Am I wrong thinking that?

map5 is the only map that needs time to adapt. Also note that if you are running on map5 for a while and switch to another map, all the adaptation and learning is lost.

Mike