[ayyrabmoney93]

Hi,

I currently have a JB4 with the ewg connector.

I am planning on installing this on my 2021 m440i xdrive that has the 48v mild hybrid system.

I just wanted to check if there's anything that would be different since it has the hybrid system or if the install is the same and it's still compatible.

Thanks!

[Vmaxx]

Originally Posted by ayyrabmoney93

Hi,

I currently have a JB4 with the ewg connector.

I am planning on installing this on my 2021 m440i xdrive that has the 48v mild hybrid system.

I just wanted to check if there's anything that would be different since it has the hybrid system or if the install is the same and it's still compatible.

Thanks!

Same process, no issues installing on 2021 48v platform for me.

[ayyrabmoney93]

Originally Posted by Vmaxx

Same process, no issues installing on 2021 48v platform for me.

Originally Posted by Vmaxx

Same process, no issues installing on 2021 48v platform for me.

Awesome! Thanks man!

What maps are you running, and how does it feel with the jb4 in?

[Daywalker007]

I have the JB4 on my 2022 and it is definitely quicker. I pulled a 3.67 second 0-60mph today with only the JB4 and high flow catted down pipe. Before the JB4 I couldn’t even manage to get down to the factory claim of 4.1 seconds. I was consistently doing 4.4 and now I consistently get 3.8s for 0-60.

[Vmaxx]

Originally Posted by ayyrabmoney93

Awesome! Thanks man!

What maps are you running, and how does it feel with the jb4 in?

Yep. As Daywalker said, definitely pulls stronger and faster. I also have high flow catted DP. And I can get 3.55 to 60 on e30 fuel. My best run stock was 4.07 so to get about half from JB4 isn’t bad at all. I also ran a 11.57 in 1/4 and even that was with a little tire slippage. I run map 4 since I have EWG connected, but now it pulls hard enough to spin all 4 on launch and sometimes even a bit in 2nd gear.

[Daywalker007]

Originally Posted by ayyrabmoney93

Awesome! Thanks man!

What maps are you running, and how does it feel with the jb4 in?

I am running Map 2 currently. I tried map 3 but was getting some timing issues so I stick with map 2 until I can figure out the timing fix. I don’t have access to higher octane fuel so maybe NGK spark plugs with a smaller gap?. Either way I am happy with the JB4 as an interim tuning solution until the DME is figured out.

[L1000]

21 m440. Stock was doing 3.9-4.1 to 60 and 12.1 at 112 in 1/4. Jb4 map 3 on 93 octane netted 3.6 to 60 and about half second in the 1/4. Using map 4 or 6 with 4 gallons of e85 ~e30 saw a very nice decrease in times. Stock downpipe and everything else on a/s rf's

[ayyrabmoney93]

Originally Posted by Daywalker007

I am running Map 2 currently. I tried map 3 but was getting some timing issues so I stick with map 2 until I can figure out the timing fix. I don’t have access to higher octane fuel so maybe NGK spark plugs with a smaller gap?. Either way I am happy with the JB4 as an interim tuning solution until the DME is figured out.

Originally Posted by Daywalker007

I am running Map 2 currently. I tried map 3 but was getting some timing issues so I stick with map 2 until I can figure out the timing fix. I don't have access to higher octane fuel so maybe NGK spark plugs with a smaller gap?. Either way I am happy with the JB4 as an interim tuning solution until the DME is figured out.

I was having timing issues in map 3 on my 430 so I built a custom map 6 that was basically somewhere in between 4-6 psi over stock (between map 2 and 3) and that was working great…have to do it all over again for the 440 now 😁

[ayyrabmoney93]

Originally Posted by L1000

21 m440. Stock was doing 3.9-4.1 to 60 and 12.1 at 112 in 1/4. Jb4 map 3 on 93 octane netted 3.6 to 60 and about half second in the 1/4. Using map 4 or 6 with 4 gallons of e85 ~e30 saw a very nice decrease in times. Stock downpipe and everything else on a/s rf's

Originally Posted by Daywalker007

I am running Map 2 currently. I tried map 3 but was getting some timing issues so I stick with map 2 until I can figure out the timing fix. I don't have access to higher octane fuel so maybe NGK spark plugs with a smaller gap?. Either way I am happy with the JB4 as an interim tuning solution until the DME is figured out.

Originally Posted by L1000

21 m440. Stock was doing 3.9-4.1 to 60 and 12.1 at 112 in 1/4. Jb4 map 3 on 93 octane netted 3.6 to 60 and about half second in the 1/4. Using map 4 or 6 with 4 gallons of e85 ~e30 saw a very nice decrease in times. Stock downpipe and everything else on a/s rf's

Dang… 3.6 on just 93 is impressive by itself!!

[ayyrabmoney93]

Originally Posted by ayyrabmoney93

Dang… 3.6 on just 93 is impressive by itself!!

Out of curiosity Daywalker007 Vmaxx what brand of hi flow catted dp are y'all running?

[Vmaxx]

Originally Posted by ayyrabmoney93

Out of curiosity Daywalker007 Vmaxx what brand of hi flow catted dp are y'all running?

AA for me, love it!

[Daywalker007]

Originally Posted by ayyrabmoney93

Out of curiosity Daywalker007 Vmaxx what brand of hi flow catted dp are y'all running?

I am using the 5 inch Logos Engineering DP. No issues with it whatsoever after 5 months of hard driving.

[Daywalker007]

Originally Posted by ayyrabmoney93

I was having timing issues in map 3 on my 430 so I built a custom map 6 that was basically somewhere in between 4-6 psi over stock (between map 2 and 3) and that was working great…have to do it all over again for the 440 now 😁

I would be interested in seeing that custom map if you get it figured out again. I am not good with tuning so if you are willing to share I would appreciate it.

[Rux]

Although I am getting the same numbers with my M440, I do feel the Mild Hybrid has a detrimental effect with lag under certain circumstances. Being the Gen 1 variety of MH and belt driven, I am not sure that when the car calls for +3 over stock that it is able to negate the lag down low.

I had Terry at BT look at several logs and all looks fine to him. It is not super noticeable and does not happen all of the time. Normally it is linear. The lag I sometimes feel is from a low speed, hard into it and you can feel the slingshot effect. The other theory is that with nannies off, this effect goes away. I have not had it happen with them all off. Yet.

Regardless I am happy with it and would do it again. It definitely wakes the car up more than it already was.

[G30M]

any ideas how mild hybrid causes lag?

[GenesisKnight]

I'm curious at some of the numbers. Maybe I just got luck of the draw...but running 93 octane with aftermarket intake and charge pipe, I'm seeing 3.375s 0-100kph on Map 3 according to JB4.
...AA catted downpipe comes next week. Can't wait to compare!

[ayyrabmoney93]

Originally Posted by GenesisKnight

I'm curious at some of the numbers. Maybe I just got luck of the draw...but running 93 octane with aftermarket intake and charge pipe, I'm seeing 3.375s 0-100kph on Map 3 according to JB4.
...AA catted downpipe comes next week. Can't wait to compare!

Originally Posted by GenesisKnight

I'm curious at some of the numbers. Maybe I just got luck of the draw...but running 93 octane with aftermarket intake and charge pipe, I'm seeing 3.375s 0-100kph on Map 3 according to JB4.
...AA catted downpipe comes next week. Can't wait to compare!

My timings looked terrible on map 3, and even on my first attempt at a map 6. So I actually went back to map 2 where I have much more stable timing. But I don't have an intake or downpipe. Just 93.

I'm debating if I should tune the car and void the warranty just to get rid of the 130 mph speed limiter.

[GenesisKnight]

Originally Posted by ayyrabmoney93

My timings looked terrible on map 3, and even on my first attempt at a map 6. So I actually went back to map 2 where I have much more stable timing. But I don't have an intake or downpipe. Just 93.

I'm debating if I should tune the car and void the warranty just to get rid of the 130 mph speed limiter.

I don't know if any of the current plugin 'tuners' like JB4 or Dinan can get rid of the speed limiter? If your DME is newer than June 2020...it cannot be tuned without a FEMTO bench unlock and need to be sent out. Only after that can you do anything with it through BootMod3 or other such tuners.

[chenry]

Originally Posted by ayyrabmoney93

I'm debating if I should tune the car and void the warranty just to get rid of the 130 mph speed limiter.

I would, here's why in my opinion:

While a removed piggyback is not as easy to spot as a flash upon a cursory ISTA (diagnostic computer) dealer inspection - neither one will pro-actively void your warranty. Flashes are automatically flagged (under most circumstances) but again that doesn't void your warranty. That just says "hey this car is suspected as having had the DME manipulated"

This situation is not unique to engine mods as an example the same holds true for say my lowering springs - it's obvious my car is lowered (the dealer knows it I mean they can see it) and if my suspension fails I'm sure I would have a fight on my hands - but my suspension warranty is not pro-actively voided

Should your car need any serious repair a deeper dive by your dealer will detect a removed piggyback the same as it will detect a flash. You'll notice you don't see the piggyback manufacturers or resellers claiming a removed piggyback is undetectable like they used to - in fact that used to be a big selling point for them - unfortunately that doesn't hold true any longer and that ship has sailed.

Your exposure is the same so if I were to have been running a piggyback and had the opportunity to flash I would do it in a heart beat - you have already been compromised so might as well run a tuning solution that will give you an oem like experience in terms of power delivery, flexibility etc....

**edit** just noticed you have a 21 so a flash is likely presently not an option for you unless you're shipping your DME overseas for an unlock and subsequent flash

Just my 2-cents in case it helps anyone

[chenry]

Originally Posted by GenesisKnight

I don't know if any of the current plugin 'tuners' like JB4 or Dinan can get rid of the speed limiter?

Unfortunately no - that is a function of the DME (cars computer) and in that a piggyback (or "in line tuner" as Dinan is now calling them) has no control over the DME removing the speed limiter is beyond the capabilities of a JB4 etc...

[GenesisKnight]

Originally Posted by chenry

Unfortunately no - that is a function of the DME (cars computer) and in that a piggyback (or "in line tuner" as Dinan is now calling them) has no control over the DME removing the speed limiter is beyond the capabilities of a JB4 etc...

I wonder if something like Bimmercode could help?

I got curious as I know for a fact that I've had my car up to 235kph which is equivalent to around 146mph.

My VIN shows a code: S840 "High Speed Synchronization" which puts the speed limiter up to 155mph from what I can see.

...so of course, now I have to go find a shady stretch to try it out

[ayyrabmoney93]

Originally Posted by GenesisKnight

I wonder if something like Bimmercode could help?

I got curious as I know for a fact that I've had my car up to 235kph which is equivalent to around 146mph.

My VIN shows a code: S840 "High Speed Synchronization" which puts the speed limiter up to 155mph from what I can see.

...so of course, now I have to go find a shady stretch to try it out

What vin decoder to do you use? And ya I was really hoping it was just something I could do through bimmercode, I actually don't mind the stock tune. And if they can do xDelete through an app seems like this would be simple.