[M3Ali]

I've had jb4 for a couple months now, and have only set it to map 1. But now I have dci and custom exhaust. Which map would be best! Map 1,2, or 5?

[boost junkie]

Map 2 for pump gas (91-93 octane) and map 5 for e85.

[335NJ]

Map 5.

Map 5 will always adjust to your fuel, mods, outside conditions, driving habits. Even if bone stock. It also allows you to use E85 upto about 30-40%, but that's a seperate discussion.

Map 1 is also perfectly fine for stock, or light mod. Map 2 is suggested if you have catless downpipes, but you could run it if you have the stock downpipes if you wanted to.

Map 5 was the best map for me, it allowed much higher boost levels than map 1 for instance. But keep an eye on the chargepipe if you haven't already upgraded it, it may grenade due to high boost.

[Jeff@TopGearSolutions]

I could see how this subject always gets confusing.

Map 5 is auto tune, so it can work in any conditions, when in doubt, just use Map 5.

Map 1 is for stock and especially 91 octane cars.

Map 2 is requires downpipes on 93 octane.

Map 2 requires downpipes and recommends FMIC for 91 octane.

If you are unsure which map is right for you, try both, datalog and send the logs in for advisement. What you want to look out for is timing drop outs. If you don't understand that, post the logs and we will look them over and point them out to you.

[M3Ali]

Map 5 it is! Thanks guys!

[mike@x-ph.com]

Originally Posted by Nazar335xi

Map 5 it is! Thanks guys!

Map 5 is the best one for daily driving.

[fulltilt444]

Originally Posted by Jeff@TopGearSolutions

I could see how this subject always gets confusing.

Map 5 is auto tune, so it can work in any conditions, when in doubt, just use Map 5.

Map 1 is for stock and especially 91 octane cars.

Map 2 is requires downpipes on 93 octane.

Map 2 requires downpipes and recommends FMIC for 91 octane.

If you are unsure which map is right for you, try both, datalog and send the logs in for advisement. What you want to look out for is timing drop outs. If you don't understand that, post the logs and we will look them over and point them out to you.

Why does Map 2 require catless DPs but map 5 does not? For me, Map 5 runs upwards of 17psi boost. I hear what you are saying, but I'm running Map 5 with just Jb4 ISO G5, DCI and E30-E40 and I am pretty sure I should be picking up some DPs to save my turbos... am I wrong here?

[Miko226]

Map 5 and add e85 if accessible. Very addicting...

[iturbo_bmw]

Originally Posted by fulltilt444

Why does Map 2 require catless DPs but map 5 does not? For me, Map 5 runs upwards of 17psi boost. I hear what you are saying, but I'm running Map 5 with just Jb4 ISO G5, DCI and E30-E40 and I am pretty sure I should be picking up some DPs to save my turbos... am I wrong here?

because map 5 auto tunes.. so if u dont have a certain mod it won't tune so aggressive. map 2 is set.. it won't tune down or up depending on ur mods

[Jeff@TopGearSolutions]

Originally Posted by fulltilt444

Why does Map 2 require catless DPs but map 5 does not? For me, Map 5 runs upwards of 17psi boost. I hear what you are saying, but I'm running Map 5 with just Jb4 ISO G5, DCI and E30-E40 and I am pretty sure I should be picking up some DPs to save my turbos... am I wrong here?

Map 5 is auto tune, so it just tunes based on a happy medium of ignition and boost.

It does not know whether you have downpipes or not.

If you are concerned about your turbo's, stay stock.

However, if you want to release some back pressure and lower EGT's, then yes, downpipes would be a good idea.

[fulltilt444]

Originally Posted by iturbo_bmw

because map 5 auto tunes.. so if u dont have a certain mod it won't tune so aggressive. map 2 is set.. it won't tune down or up depending on ur mods

Maybe I don't fully understand how it autotunes. Can it detect back pressure? Or is there another indicator of this?

I'll be reading up on this but worth posing the question to the forum.

[tc535i]

Originally Posted by fulltilt444

Why does Map 2 require catless DPs but map 5 does not? For me, Map 5 runs upwards of 17psi boost. I hear what you are saying, but I'm running Map 5 with just Jb4 ISO G5, DCI and E30-E40 and I am pretty sure I should be picking up some DPs to save my turbos... am I wrong here?

because 5 will adjust down for not having the pipes

2 will try to push the same tune regardless of the car's feedback

[idratherbesurfing]

map 6...93oct 406whp 446wtq

[MasterWang]

Don't assume that you won't pull timing on map 1 or 2 just because its a pump gas map.
I put in 91 octane but still pull timing on map 1 (bad gas in my area?)
When I added 10-20% e85, the timing pulls went away.

[ferocity02]

I just switched from Map 1 to Map 5 and it gave be an extra 1-2 psi of boost, I now see 14-15psi.

I'm running 91 pump gas and no performance mods other than DCI and the JB4.

[AWDBooSTIn90]

Originally Posted by ferocity02

I just switched from Map 1 to Map 5 and it gave be an extra 1-2 psi of boost, I now see 14-15psi.

I'm running 91 pump gas and no performance mods other than DCI and the JB4.

Im getting the same 14-15 psi on map 5. Im running 93 octane though.

Is it normal to see almost 15 psi on a stock motor on map 5?

Ive even added a few gallons of e85 and did notice a bump in power but mpg went down low. ive since went back to regular 93 and my mpg seemed to never fully recover. weird... i only average about 16-17 when i used to get 20mpg. normal?

[tc535i]

Originally Posted by AWDBooSTIn90

Im getting the same 14-15 psi on map 5. Im running 93 octane though.

Is it normal to see almost 15 psi on a stock motor on map 5?

Ive even added a few gallons of e85 and did notice a bump in power but mpg went down low. ive since went back to regular 93 and my mpg seemed to never fully recover. weird... i only average about 16-17 when i used to get 20mpg. normal?

sounds about right, throw downpipes on and you'll see ~17 psi

[Jeff@TopGearSolutions]

Originally Posted by MasterWang

Don't assume that you won't pull timing on map 1 or 2 just because its a pump gas map.
I put in 91 octane but still pull timing on map 1 (bad gas in my area?)
When I added 10-20% e85, the timing pulls went away.

This is true and which is why datalogging is important. Also Map 5 would help for those situations where map 1 is still aggressive.

Originally Posted by AWDBooSTIn90

Im getting the same 14-15 psi on map 5. Im running 93 octane though.

Is it normal to see almost 15 psi on a stock motor on map 5?

Ive even added a few gallons of e85 and did notice a bump in power but mpg went down low. ive since went back to regular 93 and my mpg seemed to never fully recover. weird... i only average about 16-17 when i used to get 20mpg. normal?

Normal for the mid- range.

Your highest boost number is typically in the mid range. It's normal to hit 15+ psi in the low-mid range.

If you were hitting 15+ psi at 6500 RPM then something was wrong.

E85 needs about ~22% more fuel to produce the same amount of energy, that is likely why you noticed a decrease in MPG.

By no accident, staying out of boost helps but a true E85 car will get less MPG then a 91-93 octane car, regardless of how you drive.

[boost junkie]

I'm seeing a 3-4mpg drop with E30 as well. The fuel is considerably cheaper though so who cares!

[AWDBooSTIn90]

I understand adding e85 to the mixture will decrease gas mileage. But since ive added e85 ive havent used any e85 for a few fill ups and my mpg never went back to my pre-e85 mixture.

Before i ever tried e85 i would get 20mpg avg.

With an e30 mixture 16mpg.

4 fill ups later with straight 93 and im still getting 16-17 mpg. There shouldnt be any e85 left so im curious why my mpg didnt go back up to 20mpg avg.

[e90'D10]

Originally Posted by idratherbesurfing

map 6...93oct 406whp 446wtq

FBOs no fuel mix I'm guessing since you put 93oct?

[Mike@N54Tuning.com]

Originally Posted by Nazar335xi

I've had jb4 for a couple months now, and have only set it to map 1. But now I have dci and custom exhaust. Which map would be best! Map 1,2, or 5?

Why not log all the maps

Map2 is usually reserved for 93+ octane and downpipes..

Mike