Everyone knows the DVerdant are the fastest
Emira JB4 Tuning Now Available for I4 & V6 Cars!
- Thread starter GRP
- Start date
Doing some research on the latest AMG M139 engine. Looks like the M139 can operate at higher boost. Assuming proper cooling. Latest version operates at 40 psi. Emira version is already at 9 to 1 CR. Factory power output is rated at 469 HP, this engine might also have a very larger alternator to charge hybrid powertrain that might be zapping some HP.
[The 2.0L gasoline 4-cyl. in the C63, codenamed M139, is a development of the unit unveiled in the latest C43 and SL43. In the C63, it adopts a lower 9.0:1 compression ratio so it can accept greater boost pressure from a larger turbocharger. At full load, there is up to 40 psi (2.8 bar) of boost pressure, according to AMG.]
[The 2.0L gasoline 4-cyl. in the C63, codenamed M139, is a development of the unit unveiled in the latest C43 and SL43. In the C63, it adopts a lower 9.0:1 compression ratio so it can accept greater boost pressure from a larger turbocharger. At full load, there is up to 40 psi (2.8 bar) of boost pressure, according to AMG.]
Presumably the DV color Emira has the JB4 while the NG does not. That being the case, and considering the short distance run of your test, the HP enhancement from the JB4 is very noticeable with the DV pulling away on 1st and 2nd gears. Imo, this gives credence to the JB4's effectiveness.
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Maybe? I need to send the logs for analyse. Will report back, as of now (as you can see) there is very little improvement
Why don’t you try and install and try go for a drive. If your car performs strongly, and feels significantly stronger than the test car, then you know the JB4 is not functioning properly on that car. I’ve been around various lotus products for more than 20 years and have had a significant amount of t of track time in them..so it is fair to say that I know what it feels like when a car is modded. It not like adding a sports exhaust and the extra noise gives a placebo effect for how fast it feels.
I’ve check with my lotus people(they developed the harrop 1909sc for the v6), and they said the ecu still functions normal and will take over if certain parameters are exceeded.
Not really sure what your second and third videos were about, since it was only on the first one that one could hear the 3 beeps for take off with the 2 cars relatively lined up.
To be fair, there could really be something defective with the Verdant's JB4 module, but it could also be that your expectation of its performance enhancement is not very realistic. It's a well known fact that a stock Emira isn't super fast, but it's also not exactly a sedated turtle. For instance, my expectation of the JB4 vs Non-JB4 never resembled an outcome like this...
It was hard to do many side by side videos.. the second and third are done at the same as first but due to conditions it was staggered.. both driving at the same speed and then push on the 3rd honk. The only difference in the 2 cars was that I (DV) had 2/3 gas and titanium exhaust in and my friend (NG) 1/3 gas with oem exhaust..Not really sure what your second and third videos were about, since it was only on the first one that one could hear the 3 beeps for take off with the 2 cars relatively lined up.
To be fair, there could really be something defective with the Verdant's JB4 module, but it could also be that your expectation of its performance enhancement is not very realistic. It's a well known fact that a stock Emira isn't super fast, but it's also not exactly a sedated turtle. For instance, my expectation of the JB4 vs Non-JB4 never resembled an outcome like this...
View attachment 66260
thats the only difference the 2 car had.
The impression about power increase on the forum was that when you push it at least the car would run away a cars length from stock and that did not happen unfortunately..
Tracked Emira
Emira Fanatic
Of course I know there will be more heat, but I want some cooling options because it is mostly a track day car and I don't want any more issues.
JUBU has some parts and wanted to know if anyone has installed them?
Tracked Emira
Emira Fanatic
Tried a search and can't find this Snowtech intercooler and cooling reservoir for sale online. Where can I buy these parts?
Does anyone know if anyone else makes this or will make these parts other than Snowtech?
I have seen a few different setups but Snowtech is probably the most reliable and track tested. Boomgear has put a lot of track time with his snowtech and so far so good. Intercooler is 1700 USD and reservoirs are 1400 USD.
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If you haven't done it already, going with distilled water and Redline Water Wetter in the cooling system should help. They claim 20° cooler, but from what I've seen it's generally about 15° cooler, but that's at least something. If you don't have winter freezing issues, you won't need anti-freeze. Distilled water and Water Wetter would be fine for track use.
Snowtech seems pretty popular in China and I’ve heard they work well. I don’t think Snowtech do any parts for the V6 Emira, only for the I4. I might be wrong, but the Snowtech parts are intended for the AMG A45S but they also happen to fit the I4 Emira.
Not too o many V6 Emira in China, the vast majority are I4.
@675430VME Snowtech are only offering the charge cooler and matching radiators, or they have more parts available for the I4 Emira?
Boomgear is selling the whole kit for all necessary parts involved.
But your 1st posted video does show the Verdant pulling ahead in what seems to on what seems be on the first two gears. Hopefully there will be more such comparisons to get to a consensus, but in the meantime, you should send a couple of data logs to Burger so they can determine if your Module is in fact performing optimally.
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