C450/C43 AMG
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Tuning a C43

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Old Feb 16, 2021 | 06:40 AM
  #26  
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Acura TL-SH, among others
Originally Posted by TModelle
My target was 19-20psi and I tried stacking on both EC and stock tune, the result was the same so I just ran JB4.

I also ran an unblocked CPC, which did not make a difference either.

I figured there was not much more I could do to tune the C43 any further unless major hardware changes were made, or run WMI.

Long story short, the tuning potential of the C43 is severely limited. The funny thing is when driving the C43 I constantly wanted more power, but on my current ride I find it powerful enough to not want to mod anything as it is plenty quick out of the box.
There are JB4 guys running 11.5's and quicker, with just the tune, so you might have a car that you like now, but you don't like it because it responded better due to a tune. You had the C43for a few months, a FL car, and complained from the beginning, your words. You dropped it as soon as you could, one year in, and have never looked back. Except for the fact that you need to frequent the forums for the car you couldn't wait to get rid of. I'm telling you, far more dedicated people have run far faster, with minimal mods.

Last edited by Howyalivin; Feb 16, 2021 at 06:44 AM.
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Old Feb 16, 2021 | 11:09 AM
  #27  
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C190
Originally Posted by Howyalivin
There are JB4 guys running 11.5's and quicker, with just the tune, so you might have a car that you like now, but you don't like it because it responded better due to a tune. You had the C43for a few months, a FL car, and complained from the beginning, your words. You dropped it as soon as you could, one year in, and have never looked back. Except for the fact that you need to frequent the forums for the car you couldn't wait to get rid of. I'm telling you, far more dedicated people have run far faster, with minimal mods.
I’m not sure what conclusions you have drawn on your own, but as I said in my post, my target was 19-20psi and I achieved that with just the JB4, with no stacking on tune. Any more boost and I would require much more complicated mods.
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Old Feb 16, 2021 | 03:12 PM
  #28  
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2019 c43 AMG
Originally Posted by Freder8d
2017. You out here in So Cal?
yeeee bro! i noticed one of your photos was from MB ontario. I go there to get my car service lol. i have a stock 2019 c43. Only wheels are aftermarket lol
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Old Feb 16, 2021 | 04:39 PM
  #29  
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'17 C43 AMG [Stage 1+]
Originally Posted by TModelle
I’m not sure what conclusions you have drawn on your own, but as I said in my post, my target was 19-20psi and I achieved that with just the JB4, with no stacking on tune. Any more boost and I would require much more complicated mods.
The most probable conclusion is that there was something off with your car based on the info you've given. You're generalizing the c43 as a bad tuner car because it "didn't feel right" when you were trying to hit those PSI levels. those very PSI levels is what got my car to run low 11s with just a tune and intakes. if you were hitting mid to low 11s and still thought it wasn't good enough then you're in the wrong auto market segment lol
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Old Feb 17, 2021 | 07:56 AM
  #30  
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Originally Posted by Vincent Lluch
yeeee bro! i noticed one of your photos was from MB ontario. I go there to get my car service lol. i have a stock 2019 c43. Only wheels are aftermarket lol
So what city are you in out here? Gone to any car rally's or road trips out here with fellow owners?
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Old Feb 20, 2021 | 07:18 AM
  #31  
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amg gt s , supercharged c6 g.s corvette
Thats because of traction with the all wheel drive .Nothing to do with the tune.
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Old Apr 13, 2021 | 07:15 PM
  #32  
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2017 c43 amg sedan
2017 c43 amg

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Last edited by C43_; Feb 22, 2022 at 03:54 PM. Reason: Mistake
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Old Apr 13, 2021 | 07:34 PM
  #33  
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Originally Posted by C43_
2017 c43 AMG. Jb4 only, Map 5 E30 with chevron 94 mix in vancouver. 548 HP, 580 lbs ft torque at crank. Next mod is BMS intake


Nice dyno numbers. Post some 1/4 times and/or draggy results. Experience has shown that dyno figures vary wildly day-to-day, car-to-car, dyno-to-dyno. The best indicators of performance increase are certain metrics over stock figures (0-60, 1/4 mile and 60-130 for example).
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Old May 7, 2021 | 09:26 AM
  #34  
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W205 2017 c43 amg sedan
Originally Posted by C43_
2017 c43 AMG. Jb4 only, Map 5 E30 with chevron 94 mix in vancouver. 548 HP, 580 lbs ft torque at crank. Next mod is BMS intake


Is it possible for you to reach out to me with how you managed to get that with the jb4? I'm on whatsapp if you can message me 9089775608.. Right now jb4 map 3, I have the amg performance exhaust with a resonator delete and bms intakes on 93
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Old May 23, 2021 | 09:40 PM
  #35  
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2018 C63 Sedan
Originally Posted by C43_
2017 c43 AMG. Jb4 only, Map 5 E30 with chevron 94 mix in vancouver. 548 HP, 580 lbs ft torque at crank. Next mod is BMS intake


Solid gains!
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Old May 23, 2021 | 09:45 PM
  #36  
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W205 2017 c43 amg sedan
Originally Posted by BMS
Solid gains!
If I were to use 100 octane or even e85 would I need to change anything on the car?? Or do I just run map 4-5 on jb4 and I'm good?
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Old May 23, 2021 | 11:43 PM
  #37  
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C43
Originally Posted by Amg43c
If I were to use 100 octane or even e85 would I need to change anything on the car?? Or do I just run map 4-5 on jb4 and I'm good?
I would imagine it's recommended to change at least your fuel pump.
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Old May 24, 2021 | 12:19 AM
  #38  
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W205 2017 c43 amg sedan
Originally Posted by Ramsino
I would imagine it's recommended to change at least your fuel pump.
I figured something would need changing, but they just said "only jb4"
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Old Mar 13, 2022 | 07:36 PM
  #39  
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2013 C63 P31 package in Mars Red
Originally Posted by Freder8d
So what city are you in out here? Gone to any car rally's or road trips out here with fellow owners?
where in so cal are you? Im in Irvine, would love to meet up with other owners!
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Old Mar 13, 2022 | 10:33 PM
  #40  
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Originally Posted by c450Sam
where in so cal are you? Im in Irvine, would love to meet up with other owners!
I work in Irvine (high rise buildings across the street from the Spectrum).
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