Emira JB4 Tuning Now Available for I4 & V6 Cars!

[NoFear99]

BMS JB4 mounting bracket

Shipping starts end of May 2025 Laser cut from 4mm thick 304-2B stainless steel. Bracket mounts to the left side vent support inside the engine bay. Removal of the left side engine trim cover is required*Prototype pictured, final appearance may differ* Instructions: Tools needed - 7mm socket...

www.darkworks-design.com

Greats Scott ! Sold.
Order placed.

 

[Ryan_929]

I’m a visual learner. Who wants to post an install video for the i4?

 

[crestima]

BMS JB4 mounting bracket

Shipping starts end of May 2025 Laser cut from 4mm thick 304-2B stainless steel. Bracket mounts to the left side vent support inside the engine bay. Removal of the left side engine trim cover is required*Prototype pictured, final appearance may differ* Instructions: Tools needed - 7mm socket...

www.darkworks-design.com

Can you provide a picture of the installed bracket/JB4 in the engine bay?

 

[sixtyy]

Does anyone has installation manual for V6?

 

[mr.suntorytime]

Can you provide a picture of the installed bracket/JB4 in the engine bay?

Yes, when the brackets come in i will have a video on the product page.

 

[Rayjoedef]

Two key takeaways:
1) All of the conversation on whether the install is a simple DIY or not was addressed (it's not, given access limitations, even on a lift and coming from the developer!).
2) This is Lotus' worst nightmare, out of the box the i4 was confirmed as the higher HP platform when comparing base stock runs.

However, I'm confused by the turbo stock hp/torque numbers given by burger as US cars have 400hp/354tq....

 

[Vampyre]

BMS JB4 mounting bracket

Shipping starts end of May 2025 Laser cut from 4mm thick 304-2B stainless steel. Bracket mounts to the left side vent support inside the engine bay. Removal of the left side engine trim cover is required*Prototype pictured, final appearance may differ* Instructions: Tools needed - 7mm socket...

www.darkworks-design.com

Bracket Ordered - Thanks!

 

[David s]

I’ve watched the vid of the burger boys doing the dyno pulls from oem to full power 93. And now all I can think of is where’s my tune! It’s my birthday at the end of the week and i want to unwrap my present. Come on GRP. It’s party time!!!

 

[NorCalEmira]

However, I'm confused by the turbo stock hp/torque numbers given by burger as US cars have 400hp/354tq....

The dyno measures power at the wheels after parasitic drivetrain losses. Factory figures measure power at the crank.

 

[chirowolf]

Yes if they can see the wiring, but this looks like an easy install/remove.

I see the I4 is a bit of pain to install. Will be interested to see an install in the V6. Another mod on my short list

 

[Thirdgen89gta]

I think the install on the v6 is going to be way easier than the i4. Yes the i4 makes a lot of power.

I wanted the v6. But I'm not stupid. I always KNEW the AMGI4/DCT combo would be the better powertrain from a performance aspect. One, turbo makes a much fatter torque curve. The DCT makes WAY better use of the power available and has 2 more gears of advantage in acceleration.

If you look at the AMG I4, it also makes way more power UNDER the curve. Its average HP numbers are way up. The v6 only makes its peak HP for like 200rpm at the top, most times we don't even reach this rpm before upshifting. The AMG flattens out a bit, so for several hundred RPM its making peak power, and the 8spd DCT will keep it on tap.

No matter how fast I shift, I'm never going to come close to the speed of the DCT. Not only that, unless Lotus implemented flat food shifting, then the blowoff valve has to vent boost between shifts as the throttle blades close when you lift between shifts. Now, its a supercharger, so the boost comes back WAY faster than a turbo, but thats still a 400-800ms shift, vs probably a 50-80ms shift on the DCT.

The DCT is the real winner here. Best of both worlds would be the screaming V6 (with a VT upgrade so you could rev slightly past power peak and get more avg power) with the DCT to keep it on cam.

Honestly, a valve train upgrade so you could spin about 1000rpm past peak power would allow the V6 to make a lot more AVERAGE power without actually increasing peak power at all.

 

[Rayjoedef]

The dyno measures power at the wheels after parasitic drivetrain losses. Factory figures measure power at the crank.

At beginning of video, payam states turbo makes 360....he then gets base of 387??? US cars are 400/354 so his hp stock reading is correct but torque way down....hope I'm not making this more confusing than it has to be.

 

[Kaz]

At beginning of video, payam states turbo makes 360....he then gets base of 387??? US cars are 400/354 so his hp stock reading is correct but torque way down....hope I'm not making this more confusing than it has to be.

He's just stating incorrect information and giving the power figures for the 360hp rated version of the car ...I'm assuming a Google search gave him the overseas 360hp rated version of the stated power. The numbers he got on the dyno align with the US published power rating and reflect drivetrain loss and dyno variability. A car with 400hp at the crank will have less measured power at the wheel and on top of that every dyno will measure this slightly differently depending on the type of dyno it is. It only matters what your baseline measurement is so that you can properly see what gains are actually happening.

 

[RoryBellows]

Good video and kudos on the mount development so quick. I'm still in break in but I have noticed that my V6 is getting pretty crap mpg which would make me wary of trying to operate a 93 tune due to gas availability. Luckily Burger does methanol systems too. I think if you are in CA at least that the setup to get will be a 91 + Meth tune. Anyone know if they have started working out those details yet?

 

[Kaz]

Good video and kudos on the mount development so quick. I'm still in break in but I have noticed that my V6 is getting pretty crap mpg which would make me wary of trying to operate a 93 tune due to gas availability. Luckily Burger does methanol systems too. I think if you are in CA at least that the setup to get will be a 91 + Meth tune. Anyone know if they have started working out those details yet?

Payam from Burger wrote me and said just get the JB4+meth kit installed and then bring by to get a meth tune done - btw they don't ship to CA (dial-a-friend).

 

[RoryBellows]

Payam from Burger wrote me and said just get the JB4+meth kit installed and then bring by to get a meth tune done - btw they don't ship to CA (dial-a-friend).

Do you know which nozzles and tank you are going to go with?

 

[Kaz]

Do you know which nozzles and tank you are going to go with?

He said single BM10 nozzle is perfect, I ordered the kit without a tank will be using a 2.5gallon Snow Performance tank, will sit in the trunk against the right wall opposite battery. The 2 gallon Burger tank looks good too just I think it's a little long for our trunk the Snow Performance is a little more square and should fit well - I had that same tank in my Alfa 4C. This is all theory though my car has been in service for a month and no real timeline to get it back