Post warranty, the ECU and the pulley seems like a no-brainer. I don't know if there's anything else worth doing? (no valve control or exhaust for me).
Lotus Emira V6 ECU Tune - Bench Flash
- Thread starter VF Tuner
- Start date
Ok, I'll hold on a dyno. How do I know when there's a new update available?
- Thread starter
- #424
We will post update info here and then email updates files
I will post the updated tune information later today
I just wanna say that this man delivered. All I have to say for the moment.
I think the JUBU final drive with this would be epic set up. Shorter gears with that power would be ideal set up!
- Thread starter
- #427
Sorry I didn’t get a chance to post that update, I’m currently traveling.
By this weekend we will I’ll have all the details out and send out the new tune files for everyone shortly after.
This throttle update is game changing for response / power / future bolt ons
By this weekend we will I’ll have all the details out and send out the new tune files for everyone shortly after.
This throttle update is game changing for response / power / future bolt ons
I presume you are referring to https://www.jubu-performance.com/en/shop/part-jubu_verkuerzte_achsuebersetzung_semi_helical_v6-2508 which changes the final drive reductions from 3777 → 4529 (1-4th), 3238 → 3850 (5th and 6th), plus two options for a longer 6th gear.
That does look pretty interesting but also like a pretty intense (expensive) modification to install.
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I am curious to see an A/F ratio map, uncorrected, with the throttle position changes.
I'm currently running VF Bolt-on 2.8 pulley 7200rpm 91 octane map with Eventuri intake, stock header, Valvetronic Exhaust.
I got a chance to get out and drive some mountain roads today. I'm not here to exaggerate and this is just the personal opinion of a regular caveman. I'll share what I have noticed:
1. Codes are gone and it's running really smooth and doesn't have an aftermarket type of feel or anything sudden or jarring. It's as if the Emira was re-released with a really decent power bump and just rolled off the lot. Frankly, this is exactly how the Emira should have been stock.
2. The extra power seems to be all across the rev range from bottom to top. I don't think I'm exaggerating. I guess when dynos start posting we'll know the truth.
3. For the mountain roads, its either the right amount of power or a little over-the-top depending on what kind of driver you are. I was definitely having to grip the steeling wheel tighter and modulate breaking where I normally wouldn't have touched the breaks. A caveman like myself doesn't like to change his tendencies and is stubborn, so there were brief moments when I thought to myself "this is too much power." That being said, it's definitely not too much power in a straight line, at least with the map I'm running. It's also quite a bit faster than stock. Would I change anything? No. I think this is just right for me but I'd love the throttle response map update. But if I was tracking or drag racing regularly, I would opt for a smaller pulley.
4. The sound... from 6800 to 7200rpm there is a really high-pitched scream that sounds great to a caveman's ears. Because I wasn't necessarily disappointed with the stock redline of 6800, there were a couple of moments when I thought to myself, "this is taking longer than expected, when do I get to change gears?" I'm sure I'll get used to it and I wouldn't change it back.
5. Someone posted a review way back about the Emira being far too heavy. By the numbers, its not a heavy sports car and actually pretty competitive in its segment in terms of weight. However, I do understand the review post. The Emira does at times "feel" heavy. I noticed that today. The extra power from the tune definitely helps to pull the Emira and get it going faster than stock, but you can still feel the inertia in the struggle to get there. And once you get there, you're a huge snowball rolling down a hill. Glad the Emira has excellent stopping power. There are other sports cars at the same weight/power that "feel" lighter. And since Lotus has a history of ultra light sports cars that actually "feel" very light, they seem to have deviated a bit here. I'm trying to pinpoint what it is but I'm not sure. When hitting corners, the Emira turns wonderfully but feels slightly heavy(by heavy I don't mean slow) maybe from the lack of assistance/numbing features that modern cars have. Maybe this is just a part of the "analog" experience. I'm not complaining just sharing thoughts.
If you're on the fence, I wouldn't hesitate. It's a no-brainer for the money. That's it for now.
I got a chance to get out and drive some mountain roads today. I'm not here to exaggerate and this is just the personal opinion of a regular caveman. I'll share what I have noticed:
1. Codes are gone and it's running really smooth and doesn't have an aftermarket type of feel or anything sudden or jarring. It's as if the Emira was re-released with a really decent power bump and just rolled off the lot. Frankly, this is exactly how the Emira should have been stock.
2. The extra power seems to be all across the rev range from bottom to top. I don't think I'm exaggerating. I guess when dynos start posting we'll know the truth.
3. For the mountain roads, its either the right amount of power or a little over-the-top depending on what kind of driver you are. I was definitely having to grip the steeling wheel tighter and modulate breaking where I normally wouldn't have touched the breaks. A caveman like myself doesn't like to change his tendencies and is stubborn, so there were brief moments when I thought to myself "this is too much power." That being said, it's definitely not too much power in a straight line, at least with the map I'm running. It's also quite a bit faster than stock. Would I change anything? No. I think this is just right for me but I'd love the throttle response map update. But if I was tracking or drag racing regularly, I would opt for a smaller pulley.
4. The sound... from 6800 to 7200rpm there is a really high-pitched scream that sounds great to a caveman's ears. Because I wasn't necessarily disappointed with the stock redline of 6800, there were a couple of moments when I thought to myself, "this is taking longer than expected, when do I get to change gears?" I'm sure I'll get used to it and I wouldn't change it back.
5. Someone posted a review way back about the Emira being far too heavy. By the numbers, its not a heavy sports car and actually pretty competitive in its segment in terms of weight. However, I do understand the review post. The Emira does at times "feel" heavy. I noticed that today. The extra power from the tune definitely helps to pull the Emira and get it going faster than stock, but you can still feel the inertia in the struggle to get there. And once you get there, you're a huge snowball rolling down a hill. Glad the Emira has excellent stopping power. There are other sports cars at the same weight/power that "feel" lighter. And since Lotus has a history of ultra light sports cars that actually "feel" very light, they seem to have deviated a bit here. I'm trying to pinpoint what it is but I'm not sure. When hitting corners, the Emira turns wonderfully but feels slightly heavy(by heavy I don't mean slow) maybe from the lack of assistance/numbing features that modern cars have. Maybe this is just a part of the "analog" experience. I'm not complaining just sharing thoughts.
If you're on the fence, I wouldn't hesitate. It's a no-brainer for the money. That's it for now.
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Also, want to thank @VF Tuner for hanging in there and delivering. I've taken some wild shots at him(I lost my mind many years ago) yet he still delivered and got my car out of limp mode and exactly where I wanted it to be. I'm actually really happy with the tune. It's really smooth with a real decent addition of power. I'll leave it at that.
Sport.
Sounds like some good feedback here. @sbproducer, what was your turnaround time from removing your ecu, to receiving it back from VF?
I sent mine in early so it took awhile. I’m sure it will be faster now..
@VF Tuner
I am contemplating doing this, but curious if you know how sophisticated the logging is within the ECU and it being able to detect if I ran second, modified ECU, for warranty purposes.
As a note, I work as a principal software architect (enterprise software) and been in the software industry for almost 3 decades.
I am curious about the level of logging the Lotus software engineers implemented in the ECU. The odometer is a separate module that communicates over the CANBUS. It would be pretty simple for the ECU to log the mileage of the vehicle while writing log entries to the ECU. If this is the case, Lotus will be able to easily detect the gap in mileage in the ECU log.
Have you done any type of testing or possibly can share some ECU log files that I could analyze?
I have 2 years 10 months left on my warranty and will avoid doing anything detectable to my vehicle that would 100% void the warranty. This would absolutely not be covered by Magnuson-Moss Warranty Act. The modification of the ECU will render the warranty null and void.
Has anyone from the community tried to have warranty work done after a JB4 was connected to the ECU? Even pulling the JB4, Lotus does detect the piggyback.
I am contemplating doing this, but curious if you know how sophisticated the logging is within the ECU and it being able to detect if I ran second, modified ECU, for warranty purposes.
As a note, I work as a principal software architect (enterprise software) and been in the software industry for almost 3 decades.
I am curious about the level of logging the Lotus software engineers implemented in the ECU. The odometer is a separate module that communicates over the CANBUS. It would be pretty simple for the ECU to log the mileage of the vehicle while writing log entries to the ECU. If this is the case, Lotus will be able to easily detect the gap in mileage in the ECU log.
Have you done any type of testing or possibly can share some ECU log files that I could analyze?
I have 2 years 10 months left on my warranty and will avoid doing anything detectable to my vehicle that would 100% void the warranty. This would absolutely not be covered by Magnuson-Moss Warranty Act. The modification of the ECU will render the warranty null and void.
Has anyone from the community tried to have warranty work done after a JB4 was connected to the ECU? Even pulling the JB4, Lotus does detect the piggyback.
Redline clip
Warranty avoidance assuming an engine issue occurred. I doubt a warranty issue with the paint work would be voided. In the case of an engine issue, the probability that it was due to the JB4 or VF issue rather than warranty anyway. These engines have been used for years by lotus, and have proven to be bullet proof when left in their natural version.
Sometimes I think that they should replace the word “warranty” with “non enjoyment period”. In case, 3 years of it.
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So thats 2 videos I've seen with an updated redline. YAY!
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