Jubu Emira 600bhp
Jubu Emira 600bhp
Author
Discussion

johnymac

Original Poster:

399 posts

192 months

Saturday 20th December 2025
quotequote all
What are peoples thoughts on the Jubu modified Lotus Emira? I have seen a couple of videos on line and it appears to work well.

M Daddy

34 posts

61 months

Sunday 21st December 2025
quotequote all
Well it would certainly be a exclusive / unique thing to own. Personally, if my goal was to 600bhp I would be looking at a second hand McLaren which was built from the ground up to deliver that performance. Also, do they have a UK supplier / service agent? Feels like there's a much higher risk of problems with that level of tune.

jamesgareth

378 posts

217 months

Monday 22nd December 2025
quotequote all
johnymac said:
What are peoples thoughts on the Jubu modified Lotus Emira? I have seen a couple of videos on line and it appears to work well.
Buy a McLaren. The Emira is designed for 400bhp. Why mess with it? One thought I have NEVER had whilst driving my Emira is if only I had more power. The Lotus is about balance agility and handling coupled with perfect ooomph. Seriously. Why mess with it?

Beachbum

2,585 posts

252 months

Monday 22nd December 2025
quotequote all
No idea what the upgrade included, but I hope it includes strengthening the transmission
There have been a few reports of transmission failed with people pushing it less than 500bhp, so I cannot see 600bhp not being a bigger concern

sjc

15,532 posts

291 months

Monday 22nd December 2025
quotequote all
There was a 630bhp Evora that sold this year where the mods were circa 30k or more,must be epic though.
Macs are all autos,so if you want a really high powered manual your options are limited. The Emira deserves more power( or less weight), the Komotec 475 kit has just been finalised for it and running that kit on my Evora, it’d be equally perfect on the Emira.

johnymac

Original Poster:

399 posts

192 months

Monday 22nd December 2025
quotequote all
It appears that there is a heck of a lot more than just a more powerful engine as the whole drivetrain has been upgraded to match. The chassis obviously can handle a lot more power, and whatever criticism there have been of either the Evora or Emira, road manners has not been one of them. The American owner clearly really loves his car, has the funds to throw at it and has no concerns about the Lotus warranty.
If I was ever in the position to do it, I think I probably would - just because I could. 600BHP McLarens are quite common. Thoroughly engineered 600 BHP Emiras. not so much.


Please keep your thoughts coming

Frimley111R

17,952 posts

255 months

Tuesday 23rd December 2025
quotequote all
Saw that too but I bet the cost was as epic as the performance.

Gadzookoids

107 posts

153 months

Tuesday 23rd December 2025
quotequote all
The Jubu mods come from the work they did with Radford to build a race engine for Pikes Peak. Although Radford are no more their race car was roughly based on an Exige with the usual Toyota V6. The Jubu engine - was putting out around 720hp with a sequential box and the car won in class and came 8th overall - so a v good result. As has been said the biggest trouble putting this engine in the Emira or Evora is that the standard gearbox needs to be strengthened. So it’s a v costly exercise. That said the Evora can certainly handle the extra power and I suspect that the Emira with its slightly wider track wouldn’t have a problem either

Frimley111R

17,952 posts

255 months

Tuesday 23rd December 2025
quotequote all
And not to mention driveshafts upgraded breaks and suspension....

As with any big power increase, the car has to be able to cope with it on every front.


Gadzookoids

107 posts

153 months

Tuesday 23rd December 2025
quotequote all
Yep - they fit some top notch motorsport driveshafts as part of the 600 upgrade. Emira suspension would need changing out too which can be a bit more difficult compared to the Evora as there is less camber adjustment

bus_ter

321 posts

241 months

Tuesday
quotequote all
600hp in an Emira seems extreme!

I recently bought one, and I've realised that red line arrives all too quickly.
I would be interested in any way to increase the rev limit, even if it didn't mean a big increase in power.

Can an Exige/Evora 430 map be put on the Emira?

sjc

15,532 posts

291 months

Tuesday
quotequote all
bus_ter said:
600hp in an Emira seems extreme!

I recently bought one, and I've realised that red line arrives all too quickly.
I would be interested in any way to increase the rev limit, even if it didn't mean a big increase in power.

Can an Exige/Evora 430 map be put on the Emira?
Komotec have just launched their 475 kit for the Emira. I have it on my Evora,big money but worth it.

coolchris

1,004 posts

223 months

Wednesday
quotequote all
Jb4 do a module that apparently gives 70 to 100bhp more think off memory about £700 not sure how reliable or safe it will be though

Frimley111R

17,952 posts

255 months

Wednesday
quotequote all
coolchris said:
Jb4 do a module that apparently gives 70 to 100bhp more think off memory about £700 not sure how reliable or safe it will be though
Yes, I've seen that on the Emira forums. Sounds like a reasonable upgrade level.

Beachbum

2,585 posts

252 months

Wednesday
quotequote all
Frimley111R said:
coolchris said:
Jb4 do a module that apparently gives 70 to 100bhp more think off memory about £700 not sure how reliable or safe it will be though
Yes, I've seen that on the Emira forums. Sounds like a reasonable upgrade level.
If you mean the JB4 unit for the Emira, its about 10% of base bhp, so depending on the car either 36, or 40bhp.

Frimley111R

17,952 posts

255 months

Wednesday
quotequote all
sjc said:
Komotec have just launched their 475 kit for the Emira. I have it on my Evora,big money but worth it.
Ouch, big money indeed but you can't do engine mods on the cheap.

Gadzookoids

107 posts

153 months

Yesterday (21:53)
quotequote all
bus_ter said:
600hp in an Emira seems extreme!?
The Emira could handle it in terms of chassis as it has a wider track compared to the Evora but I’d say that the suspension would need upgrading to reduce roll in the corners. As you say it would be extreme but I have driven a 600hp Evora and it handles it well