JB4 Firmware update 0-60 Results
PS: The time at the bottom are my stock times without JB4. I should also add that my car is pretty lowered (H&R sport springs is giving different heights to different people). So I have some excessive camber issues, (around -3.5), which really does not help with grip. Also my car is running on 19"s, which some of tuner's best times are not set on (usually super light 18s).
Last edited by munis; Sep 27, 2018 at 02:41 PM.
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Can't wait to get my JB4, First heard about this tune 4-5 years ago, so its very reputable
I also want to see someone achieve 0-60 in 3-3.2, would be sick.
We are still working on boost by gear, low 3s are possible for sure with more development.
Is your car completely stock other than the jb4 and the lowering kit? Where did you buy the jb4?
This is making me want a C43 even more now!
This is the achilles heel of the C43 for me, first gear boost cut is ridiculous. It feels like all the boost is being diverted on a hard launch from a stop. Then the car makes up for it once second gear is achieved and I doubt this is turbo lag as I can feel the boost build and snails spooling up- just not getting to the intake somehow. Wish they left off all of the electronic safe guards crap and traction control. I bet this thing would launch like a bear on fire.
I never got tire spin off of a start from stop launch and I dont brake boost because I feel it bad for the tranny if done too many times. But natural tire spin of the line on this car would greatly enhance 0-60, my point is I dont think its turbo lag holding it back, its all of the silly traction control and other things holding it back, besides MB does not want this car to be faster than the C63, so I bet they dial it down in first gear. Why buy a 63 if the 43 is faster, duh
And somebody should post a vid on how to remove the MB wire harness clips for the piggy install.
Last edited by Lazz83; Sep 28, 2018 at 11:54 AM.
This is the achilles heel of the C43 for me, first gear boost cut is ridiculous. It feels like all the boost is being diverted on a hard launch from a stop. Then the car makes up for it once second gear is achieved and I doubt this is turbo lag as I can feel the boost build and snails spooling up- just not getting to the intake somehow. Wish they left off all of the electronic safe guards crap and traction control. I bet this thing would launch like a bear on fire.
I would imagine this is intentional as they can't have this car be faster than c63?








