Emira JB4 Tuning Now Available for I4 & V6 Cars!

[Lotus F1]

Simple way to put it, we are a much more advanced tuning system vs the latter. No other piggyback will ever come close to what the JB4 system offers, they use a very rudimentary way of doing things.

JB4 Frequently Asked Questions

The differences between a JB4 vs flash tune and JB4 vs racechip explained in depth.

burgertuning.com

Thanks for your reply. Can you give any insight why or how your stock Emira shows essentially 434bhp on base map when others show right around 400bhp +/- a couple hp. This is on stock maps! Also, what is the max boost on your 93-octane setting from stock boost. Never really considered RennTech or TDI as "very rudimentary" they are major players in the market place

Thank you

 

[Payam@BMS]

Thanks for your reply. Can you give any insight why or how your stock Emira shows essentially 434bhp on base map when others show right around 400bhp +/- a couple hp. This is on stock maps! Also, what is the max boost on your 93-octane setting from stock boost. Never really considered RennTech or TDI as "very rudimentary" they are major players in the market place

Thank you

The dynojet is just a tool that shows the output on that given day, time, etc. The estimated guess on drivetrain loss is not a conclusive way to determine actual power in which you are trying to calculate and compare.

Boost is a dynamic function that varies on IAT, Elevation, DA, etc. In terms of the 2.0T engine of course.
On the V6 3.5L SC engine IIRC it was around 7psi stock, and 9psi on the 93 octane map.

Their device is rudimentary, no quotes needed. As an engineering standpoint, tuning standpoint, safety standpoint. I don't even consider them a competitor
Read the FAQ I sent you.

 

[Lotus F1]

The dynojet is just a tool that shows the output on that given day, time, etc. The estimated guess on drivetrain loss is not a conclusive way to determine actual power in which you are trying to calculate and compare.

Boost is a dynamic function that varies on IAT, Elevation, DA, etc. In terms of the 2.0T engine of course.
On the V6 3.5L SC engine IIRC it was around 7psi stock, and 9psi on the 93 octane map.

Their device is rudimentary, no quotes needed. As an engineering standpoint, tuning standpoint, safety standpoint. I don't even consider them a competitor
Read the FAQ I sent you.

Fair enough thanks for the responses and time

 

[Eagle7]

Something odd is going on here with these numbers. They rate your car stock almost 34bhp more than the normal 400bhp. @387.5rwh which equates to 434bhp.. Renntech shows 359whp which makes much more sense stock, add 12% and it gets you too 402.bhp, much more reasonable. Looking at the numbers it gets really crazy as JP4 is showing 90bhp total gain. It doesn't add up. RENNTech shows 35bhp gains, and TDI shows 50bhp gains, JP4 double that or more. It reached 497bhp, (444rwhp). I realize TDI and Renn are using BHP while Burg is using RWH. I did the conversions but it is basically twice the horsepower of the other units or more if their rwhp values ar to be used! I wonder whats really going on here

The JB4 test car wasn't factory stock, so the baseline run was for that car not a factory stock car. I had mine dynoed stone stock on a hub dyno, and it showed 369.6 hp to the rear wheels. That translates to a drivetrain loss of 7.6%, assuming the engine hp is actually 400. This is a V6 with manual trans.

 

[Emira Fan]

[dynoed stone stock on a hub dyno, and it showed 369.6 hp to the rear wheels.]​

​

Eagle7 did you add the JB4 module to your car? If so are you planning to re-dyno, would be nice to see an independent comparison.​

 

[Lotus F1]

The JB4 test car wasn't factory stock, so the baseline run was for that car not a factory stock car. I had mine dynoed stone stock on a hub dyno, and it showed 369.6 hp to the rear wheels. That translates to a drivetrain loss of 7.6%, assuming the engine hp is actually 400. This is a V6 with manual trans.

View attachment 65837

Ahh you see, I knew it.,this is exactly where it should have been. What mods could he have that has him with that much horsepower withan i4 before the jp4

 

[mr.suntorytime]

Ahh you see, I knew it.,this is exactly where it should have been. What mods could he have that has him with that much horsepower withan i4 before the jp4

lol just a drop in filter and cat delete. its also the v6.

 

[Eagle7]

lol just a drop in filter and cat delete. its also the v6.

Improving airflow in and reducing exhaust back pressure to allow better exhaust airflow out. It makes a difference. The factory intake and exhaust system is fairly restrictive, as factory systems typically are.

 

[Eagle7]

[dynoed stone stock on a hub dyno, and it showed 369.6 hp to the rear wheels.]​

​

Eagle7 did you add the JB4 module to your car? If so are you planning to re-dyno, would be nice to see an independent comparison.​

I have one on order, and yes I will re-dyno at the same place so the previous dyno graphs will be on the chart for comparison.

 

[FST]

At this point there are dozens of installs. I wonder what condition is causing this fault. Humidity? bad gas? faulty MAF? Faulty JB4?

looks like discount has reached its limit

Its all sorted out now… it works however only Map1 works.. Map2 will ONLY work if you connect the odb data cable to the piggyback so that I can read all the parameters and adjust. This is the info I got from JB4 which was not shared here before I believe… so if you are running thr JB4 without the hard wire then you are only getting map1 performance regardless what you select/see in the app

 

[675430VME]

Depends on your fuel quality, IAT, AF , and among other variables, you might need to tweak a bit to run a higher map or not at all. This is why I keep telling everyone to start at the lowest map, log and check the data before you run a higher map. What works on someone else’s car doesn’t mean it will work for you. If you know how to tune using live data you can create your own custom map as well.

 

[675430VME]

Something odd is going on here with these numbers. They rate your car stock almost 34bhp more than the normal 400bhp. @387.5rwh which equates to 434bhp.. Renntech shows 359whp which makes much more sense stock, add 12% and it gets you too 402.bhp, much more reasonable. Looking at the numbers it gets really crazy as JP4 is showing 90bhp total gain. It doesn't add up. RENNTech shows 35bhp gains, and TDI shows 50bhp gains, JP4 double that or more. It reached 497bhp, (444rwhp). I realize TDI and Renn are using BHP while Burg is using RWH. I did the conversions but it is basically twice the horsepower of the other units or more if their rwhp values ar to be used! I wonder whats really going on here

Without CANBUS for logging, other piggyback will only up the boost just slightly for safety reason. JB4 is able to achieve higher boost because using log they are able to tell what the limit is for each individual car with it’s different variables.

 

[Orchardbike]

Its all sorted out now… it works however only Map1 works.. Map2 will ONLY work if you connect the odb data cable to the piggyback so that I can read all the parameters and adjust. This is the info I got from JB4 which was not shared here before I believe… so if you are running thr JB4 without the hard wire then you are only getting map1 performance regardless what you select/see in the app

Well this is new news!
So how long do you need the OBD cable connected, before you can go with map2? I wasn’t going to connect and OBD and probably wouldn’t have bought it if I’d known that.

 

[Eagle7]

Well this is new news!
So how long do you need the OBD cable connected, before you can go with map2? I wasn’t going to connect and OBD and probably wouldn’t have bought it if I’d known that.

Since JB is working on an OBD connection in the engine bay, I'm planning on just temporarily running the cable through the interior alongside the seat instead of under the carpet and all that. This will be fine until they come up with the setup for the engine bay, then I'll switch over to that.

 

[FST]

I

Since JB is working on an OBD connection in the engine bay, I'm planning on just temporarily running the cable through the interior alongside the seat instead of under the carpet and all that. This will be fine until they come up with the setup for the engine bay, then I'll switch over to that.

I will do the same… i wasnt aware either but thats the info they’ve send me. So for now its only Map1

 

[Waterlife]

Its all sorted out now… it works however only Map1 works.. Map2 will ONLY work if you connect the odb data cable to the piggyback so that I can read all the parameters and adjust. This is the info I got from JB4 which was not shared here before I believe… so if you are running thr JB4 without the hard wire then you are only getting map1 performance regardless what you select/see in the app

Wait what? I need the data cable for Map2? I would have skipped the Bluetooth for the data cable.
Can any other Bluetooth only people confirm this?

 

[NorCalEmira]

Its all sorted out now… it works however only Map1 works.. Map2 will ONLY work if you connect the odb data cable to the piggyback so that I can read all the parameters and adjust. This is the info I got from JB4 which was not shared here before I believe… so if you are running thr JB4 without the hard wire then you are only getting map1 performance regardless what you select/see in the app

That is new information. We've been getting persistent reports that map 2 is significantly more impactful than map 1 but not all of those reports are coming from users that have connected the OBD data cable. Look forward to having an easier way to connect to OBD which is apparently coming.

 

[crestima]

Its all sorted out now… it works however only Map1 works.. Map2 will ONLY work if you connect the odb data cable to the piggyback so that I can read all the parameters and adjust. This is the info I got from JB4 which was not shared here before I believe… so if you are running thr JB4 without the hard wire then you are only getting map1 performance regardless what you select/see in the app

This is not how it was explained to me by JB4 and it’s also not consistent with my own practical experience. It was explained to me that the obd connection simply allows for performance data transmission from the car to your smartphone and this seems consistent with the fact that when I switched from M1 to M2, which is where it remains until now, the hp increase was immediately noticeable. Again, without ever connecting to the JB4 module to the obd II. I guess you can perform your own test by switching maps without the obd connection and subsequently with it to see if in fact the’s any difference.

 

[FST]

This is the reply I got.

 

[crestima]

This is the reply I got.

View attachment 65848

Go figure, this was their response to me…

From: Terry Burger <terry@burgertuning.com>

Sent: Thursday, May 22, 2025 1:15 PM

Cc: support@burgertuning.com<support@burgertuning.com>

Subject: Re: Question regarding installation instructions

Hi,

OBDII is used for tuning as well as app data. Connecting it is

preferred if maximum performance is the goal, but it remains optional

and is not required for the JB4 to function.

Best,

Terry

www.burgertuning.com