Emira JB4 Tuning Now Available for I4 & V6 Cars!

I'm gonna share my opinion on why people are getting inconsistent results with the JB4 piggyback. Now, I can already see the pitchforks coming out, but let me say this, I could be wrong here. This is just a thought that crossed my mind that makes sense to me.

From my understanding, the stock ECU has the capability to make small adjustments depending on a variety of variable factors. This is why, when we mod our cars, the performance seems to get better as the ECU begins to make small adjustments. However, it is not capable of big adjustments and it has it's limitations, and therefore, some modifications require or highly recommend tunes for optimal performance.

The JB4 piggyback seems to monitor these variable factors to a much greater degree or with different parameters for adjustments in real-time for 2 main purposes:

1) Add more power and

2) Keep the engine (not the whole powertrain/drivetrain) safe.

It's like having a tuner constantly monitor your engine information outputs and tune your car as you are driving it. Which is kind of cool and the reason why I have praised this product.

With that being said, it has an inconsistency built-in to it. It's less consistent than your typical tune in both a good and bad way. In other words, on any particular day, when conditions are great, it will provide excellent results, while on a poor condition day, it may result in less stellar results. To be more specific, when conditions are prime, the piggyback really steps on the gas, but when conditions are less stellar, because the engine is not actually modified for that level of power and safety, it dials way back to prevent potential negative outcomes.

If this is true, it could explain why people are getting different results on the dyno. The same people getting a dyno with 40-60 hp gains may see 90 hp gains on a better day at the dyno and the people getting 90hp may see 50hp on a day with poorer conditions all on the same map.

Thoughts?
 
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This is another reason why I stated multiple times that cooling products are probably going to be awesome with the JB4 piggyback. There would be less reason and occasion to dial back the power leading to greater consistency and power.
 
I'm gonna share my opinion on why people are getting inconsistent results with the JB4 piggyback. Now, I can already see the pitchforks coming out, but let me say this, I could be wrong here. This is just a thought that crossed my mind that makes sense to me.

From my understanding, the stock ECU has the capability to make small adjustments depending on a variety of variable factors. This is why, when we mod our cars, the performance seems to get better as the ECU begins to make small adjustments. However, it is not capable of big adjustments and it has it's limitations, and therefore, some modifications require or highly recommend tunes for optimal performance.

The JB4 piggyback seems to monitor these variable factors to a much greater degree or with different parameters for adjustments in real-time for 2 main purposes:

1) Add more power and

2) Keep the engine (not the whole powertrain/drivetrain) safe.

It's like having a tuner constantly monitor your engine information outputs and tune your car as you are driving it. Which is kind of cool and the reason why I have praised this product.

With that being said, it has an inconsistency built-in to it. It's less consistent than your typical tune in both a good and bad way. In other words, on any particular day, when conditions are great, it will provide excellent results, while on a poor condition day, it may result in less stellar results. To be more specific, when conditions are prime, the piggyback really steps on the gas, but when conditions are less stellar, because the engine is not actually modified for that level of power and safety, it dials way back to prevent potential negative outcomes.

If this is true, it could explain why people are getting different results on the dyno. The same people getting a dyno with 40-60 hp gains may see 90 hp gains on a better day at the dyno and the people getting 90hp may see 50hp on a day with poorer conditions all on the same map.

Thoughts?
Something that needs to be taken into consideration is the JB4 tune was developed specifically for mr.suntorytime's car, which was already modified with a GRP intake and 3rd cat delete. His baseline run was not for a stock V6 Emira, it was the baseline for HIS modded car. Due to the variable of production tolerances, no two cars are going to be exactly alike, which means the results of the JB4 tune are going to vary too.

If you look at the dyno chart for his car, you'll see the baseline power is 366 hp to the rear wheels, and that's WITH the GRP intake and 3rd cat delete. That means without those two mods, his car originally was delivering less power than that. Since we don't have a true stock baseline chart for him, we can only guess what it was. Probably somewhere in the mid 350's I'm guessing.

We're all basing our expectations of what the JB4 tune should or could do for our cars based on this chart.

lotus-emira_supercharged_v6-dyno.webp


Here's my dyno chart which was right after the break-in miles (1,026 on the odometer) and was when the car was totally stock. As you can see, my car totally stock was delivering more power to the rear wheels: 369 vs his 366 which had the GRP intake and 3rd cat delete. If my car was there and Payam had spent 2 days custom tuning his maps to my specific car, I'd be getting more results than I have because I'm using the tune he developed for mr.suntorytime's car. I'm not complaining. I wasn't expecting to get the exact same results because my car isn't exactly like his. Anyone getting the JB4 tune should expect varying results, depending on mods and other factors. It's likely going to be less than his to some degree, because of the production tolerance differences of all the components involved. It literally depends on the car.

Dyno baseline 2024-06-26 at 12.57.47 PM.webp


On a different note, I was able to find a gas station that has Shell V-Power Nitro+ 93 octane gas, and it's a 2 hour drive to get it, so last night I drove there and filled up. The car took 10.5 gallons at $3.859 a gallon, so it's basically two thirds 93 and one third 91. I'm going to drive this tank down to about a 1/4 tank, and go there again to fill up so I have a full tank of closer to true 93 octane. After that, I'll take the car to the dyno shop and get a dyno run for Maps 0, 1 and 2. I now have the 3rd cat delete, and since I have the Eventuri intake instead of the GRP, my results should be closer relatively speaking to his. We'll see what I get.

My initial driving impressions are more torque compared to Map 1. There's more of a difference in exhaust tone when switching from Tour to Sport than Map 1 has. Exhaust tone in Map 2 sounds really good. Yesterday was hot; it was still in the 80's last night when I went there, so I was driving with the A/C on. Not much difference in power feel with normal throttle at low rpms, or when starting from a stop compared to Map 1. The biggest difference is when you give it the gas. When I was getting on the freeway coming back home, I noticed MUCH more power and torque once the rpms get to about 3.5k and above. The feeling of being pushed back into the seat was strong, and stayed like that all the way up the rpm scale.

Since Shell stations are independently owned, I'm going to see if I can lobby one of the local stations to add 93 octane. As much as I enjoy being in the car and driving it, a 2 hour drive just isn't something I'm going to do all that often, despite how much fun the extra performance is. Now if I can get a local station to carry 93.... that's a different story.
 
Remind me where you are located @Eagle7 ? I might be able to find a better option for you.
 
Do your injectors and spark plugs get all orangey?
I did not had to remove the spark plug on my Emira yet but my Exige had the BOE torque300 tune receipe and I used quality reputed brand octane booster for 10+ years with good results but it was not amsoil at that time. Same story with my tuned FRS with ecutek software my ignition advance timing was spot on. Without octane booster I was unable to get all the tune benefit because the timing was reduce to 65% instead of staying around 95% with it. Here is a picture of my oem exige plugs before to switch for iridium one.
 

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Something that needs to be taken into consideration is the JB4 tune was developed specifically for mr.suntorytime's car, which was already modified with a GRP intake and 3rd cat delete. His baseline run was not for a stock V6 Emira, it was the baseline for HIS modded car. Due to the variable of production tolerances, no two cars are going to be exactly alike, which means the results of the JB4 tune are going to vary too.

If you look at the dyno chart for his car, you'll see the baseline power is 366 hp to the rear wheels, and that's WITH the GRP intake and 3rd cat delete. That means without those two mods, his car originally was delivering less power than that. Since we don't have a true stock baseline chart for him, we can only guess what it was. Probably somewhere in the mid 350's I'm guessing.

We're all basing our expectations of what the JB4 tune should or could do for our cars based on this chart.

View attachment 70031

Here's my dyno chart which was right after the break-in miles (1,026 on the odometer) and was when the car was totally stock. As you can see, my car totally stock was delivering more power to the rear wheels: 369 vs his 366 which had the GRP intake and 3rd cat delete. If my car was there and Payam had spent 2 days custom tuning his maps to my specific car, I'd be getting more results than I have because I'm using the tune he developed for mr.suntorytime's car. I'm not complaining. I wasn't expecting to get the exact same results because my car isn't exactly like his. Anyone getting the JB4 tune should expect varying results, depending on mods and other factors. It's likely going to be less than his to some degree, because of the production tolerance differences of all the components involved. It literally depends on the car.

View attachment 70032

On a different note, I was able to find a gas station that has Shell V-Power Nitro+ 93 octane gas, and it's a 2 hour drive to get it, so last night I drove there and filled up. The car took 10.5 gallons at $3.859 a gallon, so it's basically two thirds 93 and one third 91. I'm going to drive this tank down to about a 1/4 tank, and go there again to fill up so I have a full tank of closer to true 93 octane. After that, I'll take the car to the dyno shop and get a dyno run for Maps 0, 1 and 2. I now have the 3rd cat delete, and since I have the Eventuri intake instead of the GRP, my results should be closer relatively speaking to his. We'll see what I get.

My initial driving impressions are more torque compared to Map 1. There's more of a difference in exhaust tone when switching from Tour to Sport than Map 1 has. Exhaust tone in Map 2 sounds really good. Yesterday was hot; it was still in the 80's last night when I went there, so I was driving with the A/C on. Not much difference in power feel with normal throttle at low rpms, or when starting from a stop compared to Map 1. The biggest difference is when you give it the gas. When I was getting on the freeway coming back home, I noticed MUCH more power and torque once the rpms get to about 3.5k and above. The feeling of being pushed back into the seat was strong, and stayed like that all the way up the rpm scale.

Since Shell stations are independently owned, I'm going to see if I can lobby one of the local stations to add 93 octane. As much as I enjoy being in the car and driving it, a 2 hour drive just isn't something I'm going to do all that often, despite how much fun the extra performance is. Now if I can get a local station to carry 93.... that's a different story.
Also, looking forward to the results.

A few things are clear about the JB4 Piggyback:

1) Horsepower per dollar it has extremely good value, well beyond other products.
2) It's very unlikely to cause any serious catastrophic failures of the engine itself.
3) On higher maps, it could reduce longevity of some parts within the powertrain/drivetrain and even the engine internals if driven very hard for long periods consistently. Not saying it will. Not saying that it's likely, that remains to be seen.

But what I'm really trying to get at is .. On the same map, with the same fuel, on the same car, is the power consistent? Is there any possibility that users are experiencing a wide range of hp/tq production say on a hot day vs a cold day? Maybe more than what's usually expected from temperature differences? If not, then my previous post would be completely wrong and maybe its just the result of, like you said, the JB4 being tuned on mrsunstorytime's Emira.
 
If what I'm saying is complete hogwash, which admittedly, it very well could be. And assuming that @Eagle7 is right about JB4 performance being tied to slight variations with Emiras and the fact that it was tuned on @mr.suntorytime's Emira, that would mean that everyone purchasing the JB4 would stand to benefit from having the JB4 specifically tuned to their vehicle. That could be something that JB4 could offer for an additional price or something.

I mean we are talking about 30-50 hp on the table. That's quite a bit and enough for people to want to spend that extra dollar and/or travel if necessary.
 
This is the answer I got when I asked if they could or need to tune my mods to get the most out of my JB4 stock tune. See if it makes sense to you. It would appear that variations are adapted to by the JB4.

It is not typically necessary to make adjustments for bolt on modifications of this type as the vehicle already takes advantage of any added air flow, and we typically recommend running the map that matches your available fuel octane, but feel free to send us some full throttle datalogs to review when possible and we can recommend any settings changes needed.



"To capture a datalog, connect to the JB4 app, press the Log button or "Start Logging", then capture a full throttle pull, preferably 40-90mph on a safe private track, with shifts, then press the Log button again or "Stop Logging". Go to the logs tab and email us the newest log file at the top of the list by pressing the log and selecting Email. Send to this address please.""

Best,
Burger Motorsports Support
BurgerTuning
 
a few thoughts.

1. You can’t compare dynos across cars under different testing conditions. That doesn’t make sense. Dynos are mostly helpful to see relative differences in your own car after adding mods back to back. To that end I think many are looking forward to @Eagle7 results. Thank you in advance.
2. I’m glad the base Jb4 tune is based on an air filter mod and 3rd cat delete. For anyone considering the Jb4 these mods just make sense. Why would you get a Jb4 and not do these mods?
3. Jb4 results may vary sure. But even the lowest reported results are impressive. Outside of the guys in high heat geos. Sorry bros not good for FI anyways.
4. The last gen evora put out 430hp with the same powertrain. Everyone is modding their car at their own risk but adding similar or slightly elevated power above this hardly seems catastrophic. I think jb4s in other engine platforms may have more risk when they were pushing some REALLY big HP gains. BMWs for example. I don’t think map2 is that. The 2GR has been reported to produce some really big HP gains and still be robust. IMO map2 is well under the ceiling even in stock form. I think that’s why they chose to supercharge the 2GR in the first place.
 

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