JUBU and other topics, a combo thread

[NJemira85]

JB4 will only make small changes to the car on the maps provided.

Granted, if you found a way to do "more" JB4 will continue adding more power potentially, but at some point you may hit limits of what is either possible or safe on a stock ECU+piggy back.

You can keep playing with the fuel types or methanol injection with JB4 and make more power, but at some point you'll hit another bottleneck even with better fuel.

Ultimately a smaller supercharger pulley is probably the next easiest thing to reach for more power. As long as the injectors don't run out of fuel you can relatively keep adding more psi with smaller pulleys. As NJ is inducting you'll eventually hit a point where you are outside the super chargers efficiency and stepping to a larger displacement supercharger might be best.

By this point you are thousands of dollars in and just waiting to find the next "weak point". Which, by most accounts won't be the Toyota motor for a while.

Jubu has a lot for 600hp. It’s probably a bit overpriced, but it’s still only 3.5L, which means the same set up w the sleeves and bigger pistons should be good for like 650+ w more tq.

This car at 600hp would really be an ideal daily and would also be a unique offering at the weight class with a manual.

There is really very little to do to a gt3 to add 100 hp, and you’d have nowhere near the torque.

 

[Type131]

Unique offering? How bout a manual Carrera T tuned to 625 HP or 700 HP by Flat 6?

F6 992 Carrera Power Kits

Flat 6 Motorsports provides the largest selection of aftermarket parts for your Porsche. Shop our vast collection of performance parts online today!

flat6motorsports.com

 

[NJemira85]

Unique offering? How bout a manual Carrera T tuned to 625 HP or 700 HP by Flat 6?

F6 992 Carrera Power Kits

Flat 6 Motorsports provides the largest selection of aftermarket parts for your Porsche. Shop our vast collection of performance parts online today!

flat6motorsports.com

Rear engined, turbo car, no steering feel.

If you like 911s you should check out 997.2 gt3 / 3rs / gt2 / 2rs

 

[luciddaydream]

I had a 992 GTS w PDK, tuned, so boring. Don't miss it at all. 911s will always have a place in my heart though.. but sadly, the new models are kinda soulless.

 

[luciddaydream]

Guys what about using Jubus heat thing to reduce heatsoak on the JB4? Anyone looked into that?

 

[sbproducer]

Ok thanks. Do you know of any pullys I could pick up? Are there any on the market?

Just a word of caution. JUBU 460 kit actually turns down the supercharger boost with a larger pulley instead of turn up the boost with a smaller pulley. Here is what they say...

"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.

This performance upgrade is specially designed for customers who - in addition to the extra power - also want to focus on keeping their vehicle as original as possible and do not want to jeopardise the stability of their engine."

Benefits / advantages

• Sustained power increase to +460 hp and at the same time a gentle relief of the engine and compressor by reducing the boost pressure (larger pulley)

 

[NJemira85]

Just a word of caution. JUBU 460 kit actually turns down the supercharger boost with a larger pulley instead of turn up the boost with a smaller pulley. Here is what they say...

"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.

This performance upgrade is specially designed for customers who - in addition to the extra power - also want to focus on keeping their vehicle as original as possible and do not want to jeopardise the stability of their engine."

Benefits / advantages

• Sustained power increase to +460 hp and at the same time a gentle relief of the engine and compressor by reducing the boost pressure (larger pulley)

It should be noted that the gt4 car pushes 460 w bigger blower on stock bottom end.

Jubu are legit but have some intense thoughts about parts to sell.

Not saying who’s right or wrong.

forged pistons, rods, upgraded valve springs & retainers seem like the way.

 

[sbproducer]

It should be noted that the gt4 car pushes 460 w bigger blower on stock bottom end.

Jubu are legit but have some intense thoughts about parts to sell.

Not saying who’s right or wrong.

forged pistons, rods, upgraded valve springs & retainers seem like the way.

NJ,

JUBU might be wrong about the whole boost pressure thing but I do believe it stems from some experience they had with "webs of the pistons between the first and second piston ring tend break early." Just my opinion. I don't think they are lying about that.

I wholeheartedly disagree, on this idea on the forums that JUBU is just "trying to sell parts." I've taken a real deep dive into their parts shop and alot of the parts they sell are directly related to issues people have had. To share a few examples.

1) The cooling kit. Lotus actually implemented a very similar kit into their new SE.
2) The drive shafts. People have had clean breaks here.
3) Engine mounts. You've expressed the need for this yourself.

When I tried to purchase their Super B battery they recommended I buy from a US supplier (which I did) due to potential risks and high shipping costs and they recommended where to look.

I think JUBU takes a cautionary approach to things which I think is an attribute of professionalism and for me personally I appreciate their perspective.

As far as the price tags, they are a bit high but I think there are three reasons for that.

1). US customers, including myself, we are used to great prices. Most places in the world outside the US have higher prices.

2) A lot of their parts seem to be built in Europe. Higher labor etc

3). They also state somewhere on their website that the prices are higher due to expertise.. thats not a direct quote…. I think people should judge this on their own

Just my thoughts.

 

[NJemira85]

NJ,

JUBU might be wrong about the whole boost pressure thing but I do believe it stems from some experience they had with "webs of the pistons between the first and second piston ring tend break early." Just my opinion. I don't think they are lying about that.

I wholeheartedly disagree, on this idea on the forums that JUBU is just "trying to sell parts." I've taken a real deep dive into their parts shop and alot of the parts they sell are directly related to issues people have had. To share a few examples.

1) The cooling kit. Lotus actually implemented a very similar kit into their new SE.
2) The drive shafts. People have had clean breaks here.
3) Engine mounts. You've expressed the need for this yourself.

When I tried to purchase their Super B battery they recommended I buy from a US supplier (which I did) due to potential risks and high shipping costs and they recommended where to look.

Just my thoughts.

The mounts and the monoballs JUBU sent me are gorgeous.

I’m not criticizing them, but they do seem to be very conservative regarding the stock internals.

I’m not suggesting they are lying.

They also are quite fully priced compared to the stuff at MWR for internals.

 

[sbproducer]

The mounts and the monoballs JUBU sent me are gorgeous.

I’m not criticizing them, but they do seem to be very conservative regarding the stock internals.

I’m not suggesting they are lying.

They also are quite fully priced compared to the stuff at MWR for internals.

Definitely conservative with a high price tag

 

[NorCalEmira]

The mounts and the monoballs JUBU sent me are gorgeous.

I’m not criticizing them, but they do seem to be very conservative regarding the stock internals.

I’m not suggesting they are lying.

They also are quite fully priced compared to the stuff at MWR for internals.

It's definitely worth cross shopping MWR for anyone interested in going all in. They offer a forged short block with the option of cylinder liners to grow displacement to 3.7 liters. They also offer head porting, a range of valve springs, retainers and a host of other options at much more affordable prices. They're also US based. I have no doubt that Jubu offers quality alternatives but justifying their price points is more difficult.

The Emira comes from the factory with a forged crank and rods but cast pistons. It's really the pistons that are the weak link in a boosted application. How far you can push boost with cast pistons depends on a variety of factors but high quality fuel and restraint on boost levels are well advised.

 

[sbproducer]

Will take a look.

 

[Porter]

Will take a look.

I won't dig up the specifics, but vendors like Komotec and Jubu also commonly resell some engine parts that they source from US, UK, and Japanese suppliers. Including Toyota OEM stuff that's cross compatible from other models (ex. titanium valves), and from both Kelford and MWR in the case of certain valvetrain and internals. Look closely at the photos of all the things to get an idea of what might be a match.

It's just a good practice as a shrewd consumer buying hard parts from all the way across an ocean to verify which parts might have originated where you already live.

 

[NJemira85]

It's definitely worth cross shopping MWR for anyone interested in going all in. They offer a forged short block with the option of cylinder liners to grow displacement to 3.7 liters. They also offer head porting, a range of valve springs, retainers and a host of other options at much more affordable prices. They're also US based. I have no doubt that Jubu offers quality alternatives but justifying their price points is more difficult.

The Emira comes from the factory with a forged crank and rods but cast pistons. It's really the pistons that are the weak link in a boosted application. How far you can push boost with cast pistons depends on a variety of factors but high quality fuel and restraint on boost levels are well advised.

Didn’t realize crank and rods were forged. That’s nice.

 

[Tomwa]

NJ,

JUBU might be wrong about the whole boost pressure thing but I do believe it stems from some experience they had with "webs of the pistons between the first and second piston ring tend break early." Just my opinion. I don't think they are lying about that.

They are in fact lying about this. There are many cars with 2GR running more power than JUBU with no evidence of 'spider cracks' in the pistons. We are talking Evora and MR-2 Guys out there with 600hp with no engine failures.

I wholeheartedly disagree, on this idea on the forums that JUBU is just "trying to sell parts." I've taken a real deep dive into their parts shop and alot of the parts they sell are directly related to issues people have had. To share a few examples.

1) The cooling kit. Lotus actually implemented a very similar kit into their new SE.
2) The drive shafts. People have had clean breaks here.
3) Engine mounts. You've expressed the need for this yourself.

When I tried to purchase their Super B battery they recommended I buy from a US supplier (which I did) due to potential risks and high shipping costs and they recommended where to look.

It's good they recommended not shipping a lithium battery across the ocean...just to ship it back. But these are 'simple' parts to recommend and other than the cooling kit, they didn't really need to 'develop' in order to offer, since these are not parts they are custom making.

As far as the price tags, they are a bit high but I think there are three reasons for that.

1). US customers, including myself, we are used to great prices. Most places in the world outside the US have higher prices.

2) A lot of their parts seem to be built in Europe. Higher labor etc

3). They also state somewhere on their website that the prices are higher due to expertise.. thats not a direct quote…. I think people should judge this on their own

Just my thoughts.

1. Irrelevant. Either they are competitive with their prices in the marketplace or they aren't.
2. Their parts are not coming from europe. Maybe some are most are not.
3. May be true, but also I've been around plenty of scam and shady companies they all depend on convincing you they know better. Also, I've heard enough from people that things go sideways real fast and just keep pushing for more purchases to solve problems. People who are tens of thousands of dollars deep with JUBU products and service and walk away because they could not deliver and were stuck with a broken car.

 

[sbproducer]

They are in fact lying about this. There are many cars with 2GR running more power than JUBU with no evidence of 'spider cracks' in the pistons. We are talking Evora and MR-2 Guys out there with 600hp with no engine failures.



It's good they recommended not shipping a lithium battery across the ocean...just to ship it back. But these are 'simple' parts to recommend and other than the cooling kit, they didn't really need to 'develop' in order to offer, since these are not parts they are custom making.



1. Irrelevant. Either they are competitive with their prices in the marketplace or they aren't.
2. Their parts are not coming from europe. Maybe some are most are not.
3. May be true, but also I've been around plenty of scam and shady companies they all depend on convincing you they know better. Also, I've heard enough from people that things go sideways real fast and just keep pushing for more purchases to solve problems. People who are tens of thousands of dollars deep with JUBU products and service and walk away because they could not deliver and were stuck with a broken car.

You make some good points, but let me add:

1) We don't have a clear population of 2GRs running HP and Torque figures beyond what JUBU recommends without upgraded internals that have had engine failures. Even if many have not failed, if some have failed.. it is something to consider. Just because there are "many" 2GRs running out there with 600hp and I'm assuming 400 plus torque, doesn't mean that JUBU is lying. If literally 1 or 2 motors had piston failure, they are being honest.

2) When JUBU recommends a part that is rated for more HP and Torque, it is a precautionary measure and to increase longevity. The Emira/Evora weren't designed from factory to run such high figures, so it makes sense that some parts in the drivetrain are not rated for that kind of power. That means even if things don't fail right away, you are very likely to decrease longevity and have premature engine failure at some point down the line. So upgrading to more solid drivetrain parts and/or internals, if desired, should increase longevity and decrease the likelihood of premature failure. I can't fault JUBU for selling parts that are rated for higher figures. On top of that, they seem to be very involved in motorsports on the track and have a working relationship with Lotus, so it all lines up legit to me.

3) As far as JUBU recommending these parts, well .. they are a for-profit business.

4) I have yet to read about anyone stuck with a broken car after spending thousands with JUBU. I've read many reports of excellent customer service, one-on-one remote sessions for tunes, great follow-ups, and excellent results. They did have many issues in the beginning due to CAN discrepancies between Europe and the US but that's been sorted.

Just my thoughts man. At the end of the day, I think its best that we target the weakest links in the drivetrain so that we can upgrade those and have safer and more powerful Emiras.

 

[Porter]

I moved a bunch of posts to this new thread. New digs, more elbow room! Enjoy.

 

[mr.suntorytime]

jubu wont give us their instruction manual for any of their products. what if we want to know how invasive certain installs are?

 

[sbproducer]

jubu wont give us their instruction manual for any of their products. what if we want to know how invasive certain installs are?

I would try an email and ask. If they're not willing to help with that, I would be disappointed for sure. They are currently on vacation until the 18th.

 

[mr.suntorytime]

I would try an email and ask. If they're not willing to help with that, I would be disappointed for sure. They are currently on vacation until the 18th.

More than a handful of us have tried on multiple occasions. they state we need to purchase the item for which the manual belongs to and sometimes they will not provide one to the user, only to the shop that does the install.