[blakep8]

I was talking to a friend of mine who told me to run jb4 maps through bootmod3. What exactly does that mean and why would I want to do that?

[Mike@N54Tuning.com]

Originally Posted by blakep8

I was talking to a friend of mine who told me to run jb4 maps through bootmod3. What exactly does that mean and why would I want to do that?

Bootmod is a FLASH while JB4 is a piggyback.. I think your friend is confused..

You can run JB4 with a back end flash but you can't run a flash with the JB4.

Mike

[alohasurftoad]

While jb4 is great for what it is, flashing is the next level. If you want more, "flash" in more. Putting a piggy back outside doesn't make sense to me. It ruins the essence of flashing, aesthetically as well.

[blakep8]

Originally Posted by alohasurftoad

While jb4 is great for what it is, flashing is the next level. If you want more, "flash" in more. Putting a piggy back outside doesn't make sense to me. It ruins the essence of flashing, aesthetically as well.

He is saying that you can run jb4 maps thru an unlocked dme so it's smoother power but the jb4 maps are better than any other ots tune. He did it on his m5 and m4 and he's happy with it.

[hardparker]

I run BM3 with JB4 stacked on top to let me hit the flash target boost, change boost as desired, run PI, E85.

[blakep8]

Originally Posted by hardparker

I run BM3 with JB4 stacked on top to let me hit the flash target boost, change boost as desired, run PI, E85.

So what are the pros and cons of doing that over just flashing my ecu with a tune

[D041987]

More control and on the fly changes to ECU parameters and if you want to use different fuel you have that option as well. Overall if you want a simple change and don't have desire to change any parameters or care to mod for gas etc than flash will be the safest option and will have consistent OEM like fell pull after pull.

[hardparker]

Originally Posted by blakep8

So what are the pros and cons of doing that over just flashing my ecu with a tune

Originally Posted by D041987

More control and on the fly changes to ECU parameters and if you want to use different fuel you have that option as well. Overall if you want a simple change and don't have desire to change any parameters or care to mod for gas etc than flash will be the safest option and will have consistent OEM like fell pull after pull.

^^^ What he said. All flash is awesome and the JB4 has its uses.

My use case for the JB4 was the desire to run port injection and some level of E85 auto tuning with the hardwired flex fuel sensor. WMI, too, although it seems to be incompatible with the PI/FF setup at the moment.

All that and the fact that the flash tune, as great as it was, had a couple of issues with boost control that the JB4 let me address. With the JB4, I can now hit the flash tune's boost targets accurately, which, strangely, the flash itself could not do. I attribute that mostly to my 5,500 foot altitude. I've also been able to tune out or minimize some boost spike issues at spool and post shift.

I've found that the more closely the JB4 tracks the flash tune, with minimal, but desirable changes, the smoother it feels. I've finally gotten my setup to the point where I rarely notice any difference in smoothness and drivability with my stacked setup.

[Mike@N54Tuning.com]

The best combo IMO is a JB4 with a back end flash which you can load.. This combo gives you the beat of both worlds, but really is only beneficially when fully moded / upgraded turbos and trying to squeeze as much power as possible.

Mike

[blakep8]

Originally Posted by Mike@N54Tuning.com

The best combo IMO is a JB4 with a back end flash which you can load.. This combo gives you the beat of both worlds, but really is only beneficially when fully moded / upgraded turbos and trying to squeeze as much power as possible.

Mike

Can you pm me how I'd go about doing this?

[BunkerJ]

Originally Posted by Mike@N54Tuning.com

The best combo IMO is a JB4 with a back end flash which you can load.. This combo gives you the beat of both worlds, but really is only beneficially when fully moded / upgraded turbos and trying to squeeze as much power as possible.

Mike

I agree. To me, once you have a flash, you'll only need this for PI/Meth. BM3 with a proper tune will net you everything you need for the most part. I would agree that JB4 gives a little more flexibility, but if you are the type to flash on special occasions (I don't always run the E40 tune for example), then you'll be fine with just a flash. If you plan to do more, then a JB4 will benefit you.

[Mike@N54Tuning.com]

Originally Posted by blakep8

Can you pm me how I'd go about doing this?

Sent you a PM

Mike

[mike@x-ph.com]

Originally Posted by alohasurftoad

While jb4 is great for what it is, flashing is the next level. If you want more, "flash" in more. Putting a piggy back outside doesn't make sense to me. It ruins the essence of flashing, aesthetically as well.

Jb4 + flash will offer more power and control vs using one of them on its own.

take the N54 for example, flash has been around for 8 years.
All the world records are held by JB4 + flash cars.

I ran all three setups on my N54, difference when you combine both is night and day

[Dynamic_m235]

Originally Posted by Mike@N54Tuning.com

Bootmod is a FLASH while JB4 is a piggyback.. I think your friend is confused..

You can run JB4 with a back end flash but you can't run a flash with the JB4.

Mike

So I have an m235, I have a catless downpipe, fmic, chargepipe, intake, and I’m about to get the bm3. I also have a jb4 but it’s not installed. After I get the bootmod3, would it be safe to put the jb4 on with just those mods I listed? I also have the silver package fuel it port injection kit also not installed. Would I need to install that in order to stack the jb4 and bm3?

[BunkerJ]

Originally Posted by Dynamic_m235

So I have an m235, I have a catless downpipe, fmic, chargepipe, intake, and I’m about to get the bm3. I also have a jb4 but it’s not installed. After I get the bootmod3, would it be safe to put the jb4 on with just those mods I listed? I also have the silver package fuel it port injection kit also not installed. Would I need to install that in order to stack the jb4 and bm3?

If you install the meth kit, you will need to install JB4 to control it. Until then or if you decide to not put the meth kit on, don't stack them.

[Dynamic_m235]

Originally Posted by BunkerJ

If you install the meth kit, you will need to install JB4 to control it. Until then or if you decide to not put the meth kit on, don't stack them.

Awesome thank you! Been searching for this answer for a while now lol

[BunkerJ]

Originally Posted by Dynamic_m235

Awesome thank you! Been searching for this answer for a while now lol

No problem! If you already have the kit, I'd install it. The meth will help turn that thing into a beast!

If you have Instagram, you can hit up my buddy, Chris @project_kristi

He, too, has an M235i and just got BM3, if you'd like to talk with him about his experiences thus far.

[bimmer_6uy]

Im also stuck in the loop myself. I have a FBO 328i with BM3 stage 2. I just bought a flex fuel kit along with jb4. Do you just install both? Also which map would be recommended for the upgraded fuel pump system?

[Fuel-It!]

Originally Posted by bimmer_6uy

Im also stuck in the loop myself. I have a FBO 328i with BM3 stage 2. I just bought a flex fuel kit along with jb4. Do you just install both? Also which map would be recommended for the upgraded fuel pump system?

BMS has not released N20 maps yet so I'd suggest logging map0 to start, with the flex fuel feeding in to the JB4, and then lets come up with a tuning plan for you based on the data.

[bimmer_6uy]

Originally Posted by Fuel-It!

BMS has not released N20 maps yet so I'd suggest logging map0 to start, with the flex fuel feeding in to the JB4, and then lets come up with a tuning plan for you based on the data.

dm me please,