Emira JB4 Tuning Now Available for I4 & V6 Cars!

[Tracked Emira]

For sure it’s Safer to run stock on the track. It’s gonna be hot as hell this time of year too.

I wouldn’t expect the additional power would cause injector issues would it? I’d be more concerned about overheating etc when running higher power levels on track.

What's the point of installing the JB4 if you can't run MAP 2 or 3 for a track event because of over heating?
Isn't it better to install a piggy back that will unleash more power by getting the rev limiter past the 6,800 RPM wall?
What are the best fixes available that can be installed to keep the temps low?
I removed the rear windsheild and installed the JUBU louvre which allows more heat to escape already.
Will the new VF Tuner supercharger lid help to keep temperatures low?

 

[FST]

Hi Guys, no offence.. im gonna play devils advocate here. Having installed the JB4 and running map 2 for a week… i feel the performance increase is like a placebo effect. All these people who claim the map2 power is felt and that is is soo much better and it should have come from factory like this etc..

Have you all done a side by side comparison with another Emira?

We did, see the difference below, the reason again might be due to the hot climate but again we are comparing apples with apples here.. one emira with grp airfilter, milltek valve controller and decat as dynoed by jb4 and the otherwise exact same setup with jb4 map 2. See below the videos and let me know what you guys think of it.

 

[NoFear99]

My friend had a 204 km/h trap speed on half mile drag race stock and with JB4 about 218 km/h.

For those wondering if the car will heat soak on track with JB4 just start using map1 and if everything is fine I would switch to map2 and if after couple laps temps are going up you are just at a finger tap to go back to map1 or stock on the fly in 2 seconds. It is so versatile and flexible in a blink of eye so no big deal here.

 

[lynchy73]

What's the point of installing the JB4 if you can't run MAP 2 or 3 for a track event because of over heating?
Isn't it better to install a piggy back that will unleash more power by getting the rev limiter past the 6,800 RPM wall?
What are the best fixes available that can be installed to keep the temps low?
I removed the rear windsheild and installed the JUBU louvre which allows more heat to escape already.
Will the new VF Tuner supercharger lid help to keep temperatures low?

For info we both have 400hp I4, not V6. I’m just going along with what he said, it’s fair enough, can’t deny more boost will put more strain on the car.

There are upgraded cooling options for the I4 (basically A45S parts AFAIK), but not personally done anything too extensive yet, maybe next year. I have a bit of an ongoing project and want to get that done before going too crazy on the Emira

 

[chirowolf]

Hi Guys, no offence.. im gonna play devils advocate here. Having installed the JB4 and running map 2 for a week… i feel the performance increase is like a placebo effect. All these people who claim the map2 power is felt and that is is soo much better and it should have come from factory like this etc..

Have you all done a side by side comparison with another Emira?

We did, see the difference below, the reason again might be due to the hot climate but again we are comparing apples with apples here.. one emira with grp airfilter, milltek valve controller and decat as dynoed by jb4 and the otherwise exact same setup with jb4 map 2. See below the videos and let me know what you guys think of it.

I'm assuming the JB4 car is the dark verdant green.

 

[Beachbum]

For info we both have 400hp I4, not V6. I’m just going along with what he said, it’s fair enough, can’t deny more boost will put more strain on the car.

There are upgraded cooling options for the I4 (basically A45S parts AFAIK), but not personally done anything too extensive yet, maybe next year. I have a bit of an ongoing project and want to get that done before going too crazy on the Emira

You are in the UK and have 400bhp I4's ?
Thought all UK I4's were 360bhp ?

 

[Rupes]

Hi Guys, no offence.. im gonna play devils advocate here. Having installed the JB4 and running map 2 for a week… i feel the performance increase is like a placebo effect. All these people who claim the map2 power is felt and that is is soo much better and it should have come from factory like this etc..

Have you all done a side by side comparison with another Emira?

We did, see the difference below, the reason again might be due to the hot climate but again we are comparing apples with apples here.. one emira with grp airfilter, milltek valve controller and decat as dynoed by jb4 and the otherwise exact same setup with jb4 map 2. See below the videos and let me know what you guys think of it.

Interesting for sure - could it be that your JB4 module isn't working properly? Your results are contradictory to what several dyno's have shown as a significant performance increase with the JB4 installed.

 

[brett_g]

Interesting for sure - could it be that your JB4 module isn't working properly? Your results are contradictory to what several dyno's have shown as a significant performance increase with the JB4 installed.

Also would add here that I am in Texas, with Map 2 I have been running it has been around 100*F consistently and the power gain is noticeable - echo this maybe you have a faulty unit? How long has it been installed (perhaps for ECU adaptation)?

 

[lynchy73]

You are in the UK and have 400bhp I4's ?
Thought all UK I4's were 360bhp ?

I’m in China, I4 is 400hp here. I use a UK VPN so it might show up as a UK flag when the VPN is on.

 

[Eagle7]

What's the point of installing the JB4 if you can't run MAP 2 or 3 for a track event because of over heating?
Isn't it better to install a piggy back that will unleash more power by getting the rev limiter past the 6,800 RPM wall?
What are the best fixes available that can be installed to keep the temps low?
I removed the rear windsheild and installed the JUBU louvre which allows more heat to escape already.
Will the new VF Tuner supercharger lid help to keep temperatures low?

Not trying to be rude, but are you new to modding? More power means more heat, no matter how you increase it. It means more strain on components, and requires more diligence to maintenance (oil/filter changes, etc.). It's not unusual to have to improve the cooling in some way. There are some dedicated and experienced modders on this forum, so I expect we'll see some solutions being talked about soon.

Right now the JB4 is new to everyone, so give it some time for issues to be discovered and resolved. It'll happen.

 

[Citizen]

I'm assuming the JB4 car is the dark verdant green.

Yes

And I’m the “stock” emira , only 3rd cat delete + Milltek open valve controller

Only logic reason could be humidity + weather 45 degrees ? I don’t know but I would expect more to be honest , and I bought it also but still not install it

 

[Emira Fan]

More power means more heat, no matter how you increase it. It means more strain on components,

Very true, last time I increased boost significantly on one of my cars; I had to up the intercooler (4 times larger, with a larger intake air duct). Yes, people should be careful.
I do wonder - with the piggyback essentially overriding the boost value (both cars) sent back to the ecu. Will all engine management safeguards still function, I;m sure most people are going-in eyes widevopen, that the issue may arise.

 

[djprov431]

Yes

And I’m the “stock” emira , only 3rd cat delete + Milltek open valve controller

Only logic reason could be humidity + weather 45 degrees ? I don’t know but I would expect more to be honest , and I bought it also but still not install it

Everyone knows the DVerdant are the fastest

 

[Emira Fan]

Doing some research on the latest AMG M139 engine. Looks like the M139 can operate at higher boost. Assuming proper cooling. Latest version operates at 40 psi. Emira version is already at 9 to 1 CR. Factory power output is rated at 469 HP, this engine might also have a very larger alternator to charge hybrid powertrain that might be zapping some HP.

[The 2.0L gasoline 4-cyl. in the C63, codenamed M139, is a development of the unit unveiled in the latest C43 and SL43. In the C63, it adopts a lower 9.0:1 compression ratio so it can accept greater boost pressure from a larger turbocharger. At full load, there is up to 40 psi (2.8 bar) of boost pressure, according to AMG.]

 

[crestima]

Hi Guys, no offence.. im gonna play devils advocate here. Having installed the JB4 and running map 2 for a week… i feel the performance increase is like a placebo effect. All these people who claim the map2 power is felt and that is is soo much better and it should have come from factory like this etc..

Have you all done a side by side comparison with another Emira?

We did, see the difference below, the reason again might be due to the hot climate but again we are comparing apples with apples here.. one emira with grp airfilter, milltek valve controller and decat as dynoed by jb4 and the otherwise exact same setup with jb4 map 2. See below the videos and let me know what you guys think of it.

Presumably the DV color Emira has the JB4 while the NG does not. That being the case, and considering the short distance run of your test, the HP enhancement from the JB4 is visually very noticeable with the DV pulling away on 1st and 2nd gears. Imo, this gives credence to the JB4's effectiveness.