BMS 2018 C63 JB4 Dragy Testing
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2018 C63 Sedan
BMS 2018 C63 JB4 Dragy Testing
Hey guys,
Was great boost weather tonight (55F) so decided to head over to the private track for a few pulls.
Testing was done in our 2018 C63 base model, JB4, BMS intake, 30% E85 fuel. JB4 tuning was set to map5 (+7psi over stock peak), launch mode active, and to improve traction I used the JB4's boost by gear option to reduce boost by 4psi in 1st.
Overall happy with the best run of 11.5@127mph. If we could get that 60' down in the 1.7s range where it should be, look out!
Was great boost weather tonight (55F) so decided to head over to the private track for a few pulls.
Testing was done in our 2018 C63 base model, JB4, BMS intake, 30% E85 fuel. JB4 tuning was set to map5 (+7psi over stock peak), launch mode active, and to improve traction I used the JB4's boost by gear option to reduce boost by 4psi in 1st.
Overall happy with the best run of 11.5@127mph. If we could get that 60' down in the 1.7s range where it should be, look out!
Last edited by BMS; Nov 19, 2018 at 01:02 AM.
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2016 C63S
Thanks for posting those.
1) is it fair to say that the 30% E85 you are using makes the CA limited 91 octane perform like 93 octane? Or, if it effectively better than straight 93?
2) I see you used launch control, but was traction control left along (ie in sport or sport + and leaving ESC alone), or was it in the slippier mode that it uses when in Race or the ESC is pressed once?
1) is it fair to say that the 30% E85 you are using makes the CA limited 91 octane perform like 93 octane? Or, if it effectively better than straight 93?
2) I see you used launch control, but was traction control left along (ie in sport or sport + and leaving ESC alone), or was it in the slippier mode that it uses when in Race or the ESC is pressed once?
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From: Simi Valley, California
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E30 based on 91 is probably a little better than 93 octane, maybe 94-95 octane. Like 93 with a can of octane booster for example.
Traction control fully off (hold button for 5 seconds), not sure if launch mode will engage otherwise?
Traction control fully off (hold button for 5 seconds), not sure if launch mode will engage otherwise?
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2016 C63S
Anyway, is there a strong reason for testing on a non-pump gas setup, when probably 95+% of your customers will simply be running 93 or 91? Hopefully the bulk of the R&D/tuning is around that.
Last edited by ezatnova; Nov 19, 2018 at 12:37 PM.
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Being able to mix in E85 fuel when wanted is what separates the JB4 from many of the other C63 systems currently out, so it's a large focus of our development. And certainly what map5 is intended for. I think we have a lot more room to improve power on E85 mixtures too.
There are also 91 octane and 93 octane maps enabled that can be selected on the fly using the smart phone app. In terms of their perforamnce we'll have to see. I'm not holding out much hope for 91 octane, it's really poor fuel and often requires detuning. But 93 should be able to produce similar results. Also note we have a non-S model. We'll have to evaluate how those respond as well.
There are also 91 octane and 93 octane maps enabled that can be selected on the fly using the smart phone app. In terms of their perforamnce we'll have to see. I'm not holding out much hope for 91 octane, it's really poor fuel and often requires detuning. But 93 should be able to produce similar results. Also note we have a non-S model. We'll have to evaluate how those respond as well.
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C63 W205 17' + W205 C250@brabus + NSX 95'
Being able to mix in E85 fuel when wanted is what separates the JB4 from many of the other C63 systems currently out, so it's a large focus of our development. And certainly what map5 is intended for. I think we have a lot more room to improve power on E85 mixtures too.
There are also 91 octane and 93 octane maps enabled that can be selected on the fly using the smart phone app. In terms of their perforamnce we'll have to see. I'm not holding out much hope for 91 octane, it's really poor fuel and often requires detuning. But 93 should be able to produce similar results. Also note we have a non-S model. We'll have to evaluate how those respond as well.
There are also 91 octane and 93 octane maps enabled that can be selected on the fly using the smart phone app. In terms of their perforamnce we'll have to see. I'm not holding out much hope for 91 octane, it's really poor fuel and often requires detuning. But 93 should be able to produce similar results. Also note we have a non-S model. We'll have to evaluate how those respond as well.
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EU rating and North American gas ratings aren't the same.
EU uses RON (Research Octane Number)
NA uses AKI = [RON + MON (Motor Octane Number)] / 2
MON is approximately 8-12 points lower than RON.
Since you're taking the average, the EU rating should be reduced by 4-6 points to get the North American AKI equivalent.
That brings your rating down to around 93 octane equivalent in North America. In Canada, we have 93/94 Octane readily available.
EU uses RON (Research Octane Number)
NA uses AKI = [RON + MON (Motor Octane Number)] / 2
MON is approximately 8-12 points lower than RON.
Since you're taking the average, the EU rating should be reduced by 4-6 points to get the North American AKI equivalent.
That brings your rating down to around 93 octane equivalent in North America. In Canada, we have 93/94 Octane readily available.
Last edited by KJ; Nov 19, 2018 at 05:19 PM.
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2016 C63S
Thread Starter
Former Vendor of MBWorld
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From: Simi Valley, California
2018 C63 Sedan
Thread Starter
Former Vendor of MBWorld
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From: Simi Valley, California
2018 C63 Sedan
I think everyone has it? Works just like the video. Sport mode, traction control off, press brake pull both paddles, pull right right paddle to confirm, floor car, let foot off brake. Of course traction is an issue so that is where the JB4 comes in to play, you can dial back boost in 1st gear for a faster take off. Even below stock boost levels if you needed. You can see it in action in the JB4 log I posted.
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c class
Well yes I think we all know that traction is killing us
anyway you guys can run the test with a wider rear tire...
i think there is member running that time with eurocharged...
really want to see that tire plus adjustable boost for the lower gears and see what this car can do...
thank you
anyway you guys can run the test with a wider rear tire...
i think there is member running that time with eurocharged...
really want to see that tire plus adjustable boost for the lower gears and see what this car can do...
thank you
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I think everyone has it? Works just like the video. Sport mode, traction control off, press brake pull both paddles, pull right right paddle to confirm, floor car, let foot off brake. Of course traction is an issue so that is where the JB4 comes in to play, you can dial back boost in 1st gear for a faster take off. Even below stock boost levels if you needed. You can see it in action in the JB4 log I posted.
I will give it a go and report back
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Well then, Merry Christmas to you Sir. 😂 Just no Race mode, only S+, but you do have Launch Control... And all the C63s guys use S+ mode anyways haha
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Where’s the like button?! 😂
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Or they could just set the toggle in settings to metric. I'm sure it would benefit all of their ex-North American customers to see a set of runs in KPH
Last edited by ezatnova; Nov 20, 2018 at 03:46 PM.
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Being able to mix in E85 fuel when wanted is what separates the JB4 from many of the other C63 systems currently out, so it's a large focus of our development. And certainly what map5 is intended for. I think we have a lot more room to improve power on E85 mixtures too.
There are also 91 octane and 93 octane maps enabled that can be selected on the fly using the smart phone app. In terms of their perforamnce we'll have to see. I'm not holding out much hope for 91 octane, it's really poor fuel and often requires detuning. But 93 should be able to produce similar results. Also note we have a non-S model. We'll have to evaluate how those respond as well.
There are also 91 octane and 93 octane maps enabled that can be selected on the fly using the smart phone app. In terms of their perforamnce we'll have to see. I'm not holding out much hope for 91 octane, it's really poor fuel and often requires detuning. But 93 should be able to produce similar results. Also note we have a non-S model. We'll have to evaluate how those respond as well.
