Emira JB4 Tuning Now Available for I4 & V6 Cars!

[GRP]

I hadn’t heard of JB4 tuning before but a quick google review has really good things to say about them and they’ve been around for a while.

They have been around for quite some time and are tried/true
When we initially heard they were considering doing tuning for these cars we contacted them immediately and did everything we could to help, including a good bit of persuasion to do the V6 cars.

 

[GRP]

Ordered! Excited to try it out. Little nervous of the install as I haven’t really messed with the car much. Any written instructions on how hard this will be to install?

Written instructions are coming asap.
They are working on the write ups for them and we will post just as soon as we get the word!
It’s all plug and play, “T’ing” into various sensors and their connectors/harness.

 

[jp129]

Greg, would you know what the BETA status means in terms of support?

 

[PatrickJS]

Written instructions are coming asap.
They are working on the write ups for them and we will post just as soon as we get the word!
It’s all plug and play, “T’ing” into various sensors and their connectors/harness.

can you upload install vid or maybe @CarGuy11

 

[PatrickJS]

I'm coming from the supra community where everyone did jb4 until they wanted to drop 5k for unlock/tune or just sell them afterwards (resale value is pretty good)

for warranty its really up to the dealership. It looks like enough people here will order it and hopefully half of them will post reviews/videos for everyone else on the fence still

 

[koflo]

I'm coming from the supra community where everyone did jb4 until they wanted to drop 5k for unlock/tune or just sell them afterwards (resale value is pretty good)

for warranty its really up to the dealership. It looks like enough people here will order it and hopefully half of them will post reviews/videos for everyone else on the fence still

For anyone that wants to keep their car as stock as possible, this seems like a great option though since multiple vendors have stated anything close to 500hp becomes unstable.

 

[GRP]

Greg, would you know what the BETA status means in terms of support?

I was assured today that they will have full support and everything is fully functional. There may be updates with software or tuning later one but that will be all updateable if it happens.

 

[GRP]

can you upload install vid or maybe @CarGuy11

For sure. We will share any videos/media here from installs, draggy results etc.

 

[Emira Fan]

[95whp increase on the V6 powered cars!]

Understand how to squeeze more HP out of a Turbo car, but how is it really possible to push 25% HP out of a supercharged engine without changing the pulley or significantly reducing the charge temperature.

I replaced the pulley on one of my supercharged cars and didn't get anywhere near 25% more HP. What am I missing?

 

[Milk242]

Yea I’m also curious how they extracted so much power without a real tune. I used to have an Audi s4 with the 3.0 supercharger and it was annoyingly expensive to get more hp out of it (which prompted me to switch to an M3 lol)

 

[675430VME]

With these types of piggyback systems, the dealership would only see the modification if one leaves this intact when it goes into service. If the owner removes the module, the dealer would not see any modifications.

The piggyback system intercepts the signals from various sensors and modifies how the OE ECU interprets these signals. This is not hardcoding or flashing the ECU and thus not a permanent modification.

Not exactly. For small claims dealers probably won't care but if you blow your engine, they are still able to pull data to support that.

 

[675430VME]

Sounds too good to be true.

Surely Lotus can see via the ECU the engine performance changing ?

Modern cars log a lot of data, even the tranny will have data to support the car has been modded..

 

[675430VME]

The whole premise of the piggyback is that it cannot modify the actual mapping tables in the ecu. It relies on the hard coded mapping tables of the OE ECU to run the power train because it doesn't have any of its own.

What it effectively does is intercepts certain sensor signals, like MAF and or boost pressure, etc, which the ecu utilizes to calculate fuel flow rate to command injector pulse widths. Or it may modify knock logic to allow for more timing or change the bypass valve strategies for more boost. These are just examples.

So the JB4 intercepts what the ECU really sees, spoofs the signal so that the ECU will command more fueling or allowing more timing from Burger's tuning strategy. This is just the basic principles of piggybacks, I cannot say what BTs tuning strategies are or what they manipulate to accomplish the power gains.

Data is also being logged on other part of the programming, they might have fooled the engine management, but the tranny will also record data that the car has been modded. Small claims should be fine, but if you blow the engine they will be able to prove that. I like JB4 myself and I will order one as well, but please do not tell people it's undetectable. Modify at your own risk.

 

[Wusah]

Will be placing my order with you guys when I get back stateside, got a couple of things already in my basket.

 

[Kimmax]

Sells "optional" Cables extra, while you need it for 90% of the functionality.
Sells 150$ Wireless "Kit" and then charges 30$ extra for the app, only mentioned in a wall of text.

Their 3.5L 93 Oct map as shown in the Dynojet graphs goes to 396 foot-pound, that's 536 Nm for non-eagles. Jubu rates the stock pistons at maximum 500 Nm before you start seeing cracks:

The torque must not exceed 500 NM (+/-) with standard pistons. Otherwise the already known piston web fractures may occur.

Jubu 460 Kit dials boost back boost:

An important, but usually underestimated characteristic that comes with this JUBU upgrade is the reduction of the supercharger boost-pressure compared to the OEM standard setup. This is applied because the OEM-pistons often can not withstand the high OEM boost-pressures permanently - on sporty driven cars with OEM-setup, the webs of the pistons between the first and second piston ring tend break early.

The primary source of extra power is probably just more boost by distorting the sensor values the stock ECU sees by the JB4 device.

Do with that information what you want. I'm not a mechanic, nor affiliated with anyone, but this is enough for me to skip this.

 

[Rayjoedef]

[95whp increase on the V6 powered cars!]

Understand how to squeeze more HP out of a Turbo car, but how is it really possible to push 25% HP out of a supercharged engine without changing the pulley or significantly reducing the charge temperature.

I replaced the pulley on one of my supercharged cars and didn't get anywhere near 25% more HP. What am I missing?

Also, baseline for

[95whp increase on the V6 powered cars!]

Understand how to squeeze more HP out of a Turbo car, but how is it really possible to push 25% HP out of a supercharged engine without changing the pulley or significantly reducing the charge temperature.

I replaced the pulley on one of my supercharged cars and didn't get anywhere near 25% more HP. What am I missing?

Also, not sure why turbo torque baseline is 311 and the v6 333 on US cars?

 

[Rayjoedef]

What @kitkat said. Easy enough to remove if needed especially on the V6 cars.

Not so much on the turbo. Terry Burger responds very quickly to emails. He's the one to ask if ecu is recording performance changes that may jeopardize the powertrain side of the warranty. I've used jb4s on many of my cars which have been very dependable. Emiras being service prone has me hesitating as of now.

 

[MiamiBlue]

Quite large gains for a supercharger, especially without any rev limit increase.

Why does the stock car only show 366HP? Is that all the V6 develops?

 

[kitkat]

Sells "optional" Cables extra, while you need it for 90% of the functionality.
Sells 150$ Wireless "Kit" and then charges 30$ extra for the app, only mentioned in a wall of text.

Their 3.5L 93 Oct map as shown in the Dynojet graphs goes to 396 foot-pound, that's 536 Nm for non-eagles. Jubu rates the stock pistons at maximum 500 Nm before you start seeing cracks:


Jubu 460 Kit dials boost back boost:


The primary source of extra power is probably just more boost by distorting the sensor values the stock ECU sees by the JB4 device.

Do with that information what you want. I'm not a mechanic, nor affiliated with anyone, but this is enough for me to skip this.

I brought this up in discussions with other Emira owners, Evora owners as well as 2/3eleven owners. Some Evora owners are well past 500Nm and the oem race version of the 3-eleven also comes with 525Nm from the factory. I couldn’t find evidence of those failing.

I’m not doubting Jubu’s experience with the engine but they also have incentives to sell you more parts and services.

Absolutely not trying to start a war here — but I think all of us here also recognize every modification has a certain amount of risk, if the risk is too high here, use the 91 octane map or just be happy with stock power and torque output and wait it out to see how people do.

 

[kitkat]

Quite large gains for a supercharger, especially without any rev limit increase.

Why does the stock car only show 366HP? Is that all the V6 develops?

Stock v6 has developed anywhere between 330whp and 385whp on various dynos we’ve seen.