Myself I saw a before & after dyno onto Lotus Emira Owner USA facebook page.
Emira JB4 Tuning Now Available for I4 & V6 Cars!
- Thread starter GRP
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Myself I saw a before & after dyno onto Lotus Emira Owner USA facebook page.
That doesn't mean it has zero effect. That just means that on that car, absent other mods, it didn't gain power in those conditions. But with tuning changes, it might have a significant effect compared to the results that would have been achieved if the cat were present.
Mods don't happen in a vacuum... everything you change affects everything else. None of it is additive in the way that people usually talk about it.
In that particular case, the 3rd cat delete with a milltek valve I think was the only mods done to his car and the dynojet sheet showed a +13 WHP.
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scc.131.fe
Emira Fiend
“Comparison is the thief of joy”Yeah. I guess all that bullshit about our v6 emiras are fast and powerful enough was just bullshit.
My goal is to use the rest of my warranty period to prove to myself that I can wring out 100% of this car on the street with aplomb. Once I get to that point, this mod sounds like a fantastic way to add another dab of hot sauce!
What I would expect it to do is what I saw with the Aerie Titanium exhaust, which was an increase in torque at the lower rpms. There's obviously a fair amount of back pressure from the 3rd cat and factory muffler that restricts power. Removing that should improve things, especially torque.
That’s my dyno, and the shop is also surprised that there was such a big gain just with opening the valve.
My JB4 comes tomorrow and I’ll be installing it and running it on map1 for a week or so before switching to map2 even though i have 93 and thats what’s in the car right now.
Once I feel comfortable and it seems like it’s running well I’ll get it to do a dyno at the same place under similar conditions hopefully, and see the comparison.
Installed my JB4 today, initially programmed to Map1 (91 octane), took her out for a trial spin, but struggled to notice much of an hp increase at all. I then changed to Map2 (93 octane) and, wow, I immediately and most definitely felt the increase.
My Emira has a GRP High-flow Media (blue) filter, 3rd CAT delete and Miltek valve controller, which interestingly, I believe are the same mods of the V6 test car used in the Burger YouTube video. Also, I've been feeding my Emira 93 octane since the onset.
I'm not installing the OBDII connector because I'm not really in to checking, gathering and crunching performance data rather, I'm content with my own seat-of-the-pants experience, and a good one it is.
As for the risk/reward debate, with all due respect to the more conservative and perhaps wiser of you, for me, the added enjoyment of Map2 is worth the tradeoff in risking broken axles/motor, whateva...
My Emira has a GRP High-flow Media (blue) filter, 3rd CAT delete and Miltek valve controller, which interestingly, I believe are the same mods of the V6 test car used in the Burger YouTube video. Also, I've been feeding my Emira 93 octane since the onset.
I'm not installing the OBDII connector because I'm not really in to checking, gathering and crunching performance data rather, I'm content with my own seat-of-the-pants experience, and a good one it is.
As for the risk/reward debate, with all due respect to the more conservative and perhaps wiser of you, for me, the added enjoyment of Map2 is worth the tradeoff in risking broken axles/motor, whateva...
Any updates on this?
Unless I misread it, doesn't the OBD connection enable it to work with the ECU and make adjustments on-the-fly to your car? Obviously it's a hassle to run the connection, but you only have to do that once, and the benefit of live tuning as conditions change seems like it would be worth it.
On a side note, are there only 2 maps? One for 91 and one for 93? In the video it looked like there were 3.
1) What I've found so far is that you don't need the OBD wired connection to change maps via the JB4 App, as this is achievable by the Bluetooth feature of the wireless dongle. I did it myself w/o the connection. What you do need the OBD connection for however, is to get data transmitted to the JB4 Mobile App's gauges, logs and codes.
2) Actually there are 3 programmed maps so far, which are: MAP 0 (OEM) Map1 for octane 91, and MAP2 for octane 93. The JB4 App does show 6 additional map fields (up to Map 8), but, so far, Burger only programmed the first three. Perhaps they plan to program additional maps, which could later on be loaded via software updates to then populate some of the empty fields. I'm also convinced that they're reserving some map fields to upload customized maps for customers seeking this alternative going forward.
Hope this helps to clarify.
This make sense. The dyno chart for map 1 makes most of the power from 5k rpm and up, while map2 with 93 octane looks proper.l from 3.8k-redline
The thing that bugged me the most about map one is the HP and TQ dip.
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But map 1 does make more torque from 3-4k as well. The power delivery just probably feels more even until the big bump at 5k. So net is more average power either way a bump at 5k. Probably much more satisfying to feel the map 2 bump at 3.5k onwards given the low redline.
Actually the difference seems to be the Milltek controller in that particular case. All 3 runs are with the mods, that's not a baseline (factory) run in red. The blue and green runs are simply with the valve open.
RyanGphoto
Emira Fiend
This is good info.. I will not be doing it... but I will be coming down to see yours.
Not sure I would do this until after my extended warranty is over, but maybe later down the road to feel like it's a new car again.. Right now I am super happy with the power I have as I really only cruise around anyway.. Def not tracking it, which I would be in a different camp if I were.. but love all the info from you guys for sure. Ryan G
Lotusdoesit
Well-known member
Just curious, how easy/hard is it to switch from the different maps?This is good info.. I will not be doing it... but I will be coming down to see yours.
Ryan G
Really easy, just by opening the App and tapping "Maps" in the lower menu bar and selecting the map you desire. Switches fast as well.
Attachments
Brackets will be completed this week and will be sent out in order as they were received.
Thank you everyone for your patience and trust as always!
Thank you everyone for your patience and trust as always!
For something like that, we'd like to see data logs on map 1 and map 2 to verify it's safe. Which means we you will need to install the OBD2 plug.
We're working on the Lotus again to find a better CANbus source in the rear that way you guys don't have to run the OBD2 to the front interior.
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