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.
 

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