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Challenger SRT Hellcat
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16 Posts
Discussion Starter · #1 ·
Hi everyone. On my 3rd hc now and I have been extremely happy with all but this new one. I just got a 2018 challenger HC A8 beautiful destroyer grey, satin hood, orange callipers and demonic red interior.

Now for the bad.....
Supercharger isn't as loud as my previous HCs, rear end is ridiculously noisy and whiny at any speed, and the biggest issue is there's something different about the transmission. It shifts extremely quick almost too quick of the line...the car actually bogs sometimes as it goes into 2nd gear! I can put my foot through the floor and it doesnt even feel fast! (yes I'm using the red key) & (no its not in valet mode)
Ive put almost 2500kms on it so far and it hasn't gotten better. Its extremely frustrating considering I'm comparing it to my previous HCs and they were tire shredders right from the day I picked them up. The only time it sort of has the right power and right shift points is if I put it in sport or track mode.
I thought I knew quite a bit about these HCs after 4 years of having them... BUT I need someone to shed some light on this. PLEASE.
 

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Charger SRT Hellcat
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1,270 Posts
Interesting review. I also have a 2018 Hellcat...never owned one prior. Mine has 500 miles so I have been being good during break in...I drive in street mode. My diff doesn't whine...but I hear some clicks when turning...my only potential issue I have. Curious on what others say.
 

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Challenger SRT Hellcat
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2,471 Posts
I would suggest that if you can't get your dealer to recognize that there is something going on and address it...... take it to the nearest respected tuner with HC experience and have them run it on the dyno. They can at least identify and record what is going on as far as your power delivery goes and give you a legit diagnosis to present to SRT if that is what it takes.
 

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Charger SRT Hellcat
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1,051 Posts
Whilst I haven’t noticed any odd driveline nosies with my ‘18 HC Charger. I just passed my breakin period. So I finally got on it yesterday, and too be honest, was expecting more. Low end torque is an par but up top doesn’t seem to pull so hard. Maybe needs more miles to loosen up?
 

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Challenger SRT Hellcat
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230 Posts
Interesting review. I also have a 2018 Hellcat...never owned one prior. Mine has 500 miles so I have been being good during break in...I drive in street mode. My diff doesn't whine...but I hear some clicks when turning...my only potential issue I have. Curious on what others say.

My 2016 clicked too. Changed diff fluid and that fixed it. Used Mobil1 75w-90.
 

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Challenger SRT Demon
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71 Posts
Hi everyone. On my 3rd hc now and I have been extremely happy with all but this new one. I just got a 2018 challenger HC A8 beautiful destroyer grey, satin hood, orange callipers and demonic red interior.

Now for the bad.....
Supercharger isn't as loud as my previous HCs, rear end is ridiculously noisy and whiny at any speed, and the biggest issue is there's something different about the transmission. It shifts extremely quick almost too quick of the line...the car actually bogs sometimes as it goes into 2nd gear! I can put my foot through the floor and it doesnt even feel fast! (yes I'm using the red key) & (no its not in valet mode)
Ive put almost 2500kms on it so far and it hasn't gotten better. Its extremely frustrating considering I'm comparing it to my previous HCs and they were tire shredders right from the day I picked them up. The only time it sort of has the right power and right shift points is if I put it in sport or track mode.
I thought I knew quite a bit about these HCs after 4 years of having them... BUT I need someone to shed some light on this. PLEASE.
...my 2018 Hellcat Challenger, also my 3rd ‘cat, also has had from the get, a quieter supercharger, less cracklings, less drama overall engine wise than the ‘16 & ‘17 ‘cats. Because of this, & I surmised, having a new Demon may have upped my expectations, but, my impression was the same as you, close but where’s the magic?
After 1,200 miles or so, it seems a threshold was crossed; things changed for the better, & it seems the engine is still getting better/stronger even now at 2,500 miles...
I speculate they learned & changed some things developing the Demon, giving the Hellcat more refinement, structure, but at what price? Did they take the character out, the hooligan out?
I agree w/you, the shifts the A8 is doing seem different than in ‘16/‘17. In normal driving, leaving it on its own, the shifts are smoother, less occurrences of a ‘hard shifts’, hunting, or ‘confusion’ in finding the correct gear, ‘bogging’ instead. In normal driving, the paddle shifters make much better, seemingly quicker revmatching downshifts, the upshifts seem off, slower, although smoother. The SC seems absent however, sadly, except during downshifts, she wines then.
Drive hard, left on is own, however ‘spot on’ its shifting was before, it seems tweaked & better now. Again, less drama, but more speed. With noticeably smoother feeling engagement, revmatching, & more willingness to hold onto a gear till red line. Up shifts are quick, now with more refinement, at just the exact right moment, in harmony, w/engine ablaze, the SC whining, & then at about 6000/6200 rpm, deliberate, bam. Bliss. Seat of my pants says less drama then before, but my memory, I didn’t track them, or dyno them, says the boost & HP guage reads about the same, but the speedometer seems to climb quicker now.
Paddle shifters also seem more refined during hard driving; & as in normal driving, with better revmatching downshifts, & maybe fractionally slower but much smoother engaging upshifts than in my previous ‘cats.
I speculate they also changed the throttle mapping, giving the pedal less ‘tip-in’ & more control than before. To be hooligans, we need to be more deliberate.
I bought the Hellcat after the Demon, having decided to not burn up my Demon doing Publix runs. Point is, my NB Hellcat seems awfully close to the Demon in quickness, once it hooks, but its much more of a hooligan, always. Less drama than my previous ‘cats, it seems it needs you to be more deliberate if you want shenanigans. I know there are sample to sample differences, but with 2.5K miles, I’m confident this ‘cat is as strong or stronger than any previous ‘cat I’ve owned. I do miss some of the cracklin’, drama of the previous ‘cats, but as the miles climb, to my great joy, that too is getting better on this example, it’s crackling more often; the SC remains quiet until I throttle hard, & I’m getting used to that.
The magic is back, & somehow its better than before!!!
I hope you experience the same.
 

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Charger SRT Hellcat
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1,270 Posts
Thanks JJDemon, nice to see all your thoughts...18 is my first Hellcat so I know nothing. Glad to hear they have evolved...hopefully for the better.
 
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Challenger SRT Hellcat
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163 Posts
Hi everyone. On my 3rd hc now and I have been extremely happy with all but this new one. I just got a 2018 challenger HC A8 beautiful destroyer grey, satin hood, orange callipers and demonic red interior.

Now for the bad.....
Supercharger isn't as loud as my previous HCs, rear end is ridiculously noisy and whiny at any speed, and the biggest issue is there's something different about the transmission. It shifts extremely quick almost too quick of the line...the car actually bogs sometimes as it goes into 2nd gear! I can put my foot through the floor and it doesnt even feel fast! (yes I'm using the red key) & (no its not in valet mode)
Ive put almost 2500kms on it so far and it hasn't gotten better. Its extremely frustrating considering I'm comparing it to my previous HCs and they were tire shredders right from the day I picked them up. The only time it sort of has the right power and right shift points is if I put it in sport or track mode.
I thought I knew quite a bit about these HCs after 4 years of having them... BUT I need someone to shed some light on this. PLEASE.
God bless you that you can afford to buy 3 hellcats; I have the solution buy another one.
 

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2021 Ram TRX
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1,589 Posts
Hi everyone. On my 3rd hc now and I have been extremely happy with all but this new one. I just got a 2018 challenger HC A8 beautiful destroyer grey, satin hood, orange callipers and demonic red interior.

Now for the bad.....
Supercharger isn't as loud as my previous HCs, rear end is ridiculously noisy and whiny at any speed, and the biggest issue is there's something different about the transmission. It shifts extremely quick almost too quick of the line...the car actually bogs sometimes as it goes into 2nd gear! I can put my foot through the floor and it doesnt even feel fast! (yes I'm using the red key) & (no its not in valet mode)
Ive put almost 2500kms on it so far and it hasn't gotten better. Its extremely frustrating considering I'm comparing it to my previous HCs and they were tire shredders right from the day I picked them up. The only time it sort of has the right power and right shift points is if I put it in sport or track mode.
I thought I knew quite a bit about these HCs after 4 years of having them... BUT I need someone to shed some light on this. PLEASE.
Is the new Hellcat a Widebody? If so I’m just wondering if the wider tires make the car a pinch more controllable?
 

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'22 Sinamon Redeye Standard Body
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2,961 Posts
I'm on my 3rd HC also (15, 16 now 17) and I must say this is the best one yet. 8500 trouble free miles so far. The wheels don't click, supercharger is LOUD. There's the rear end whine at about 85mph but I've had that on every one of my hellcats.

It's good you have a frame of reference because you owned two previous. Its possible they may have tweaked the TCM programming on the 18s. That could be your perception of lack of power. Is boost up where it should be? Good indicator there. Mine does shift extremely quick in default mode but all of them did that. I drive around in sport mode 90% of the time anyway.
 

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Charger SRT Hellcat
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2,083 Posts
Hi everyone. On my 3rd hc now and I have been extremely happy with all but this new one. I just got a 2018 challenger HC A8 beautiful destroyer grey, satin hood, orange callipers and demonic red interior.

Now for the bad.....
Supercharger isn't as loud as my previous HCs, rear end is ridiculously noisy and whiny at any speed, and the biggest issue is there's something different about the transmission. It shifts extremely quick almost too quick of the line...the car actually bogs sometimes as it goes into 2nd gear! I can put my foot through the floor and it doesnt even feel fast! (yes I'm using the red key) & (no its not in valet mode)
Ive put almost 2500kms on it so far and it hasn't gotten better. Its extremely frustrating considering I'm comparing it to my previous HCs and they were tire shredders right from the day I picked them up. The only time it sort of has the right power and right shift points is if I put it in sport or track mode.
I thought I knew quite a bit about these HCs after 4 years of having them... BUT I need someone to shed some light on this. PLEASE.
I know you have had two other Hellcats but are you sure that it is not in Eco mode? Eco is the default mode on mine and I have to press the SRT button twice to get into the configuration that I like to drive in.
 

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'22 Sinamon Redeye Standard Body
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2,961 Posts
I know you have had two other Hellcats but are you sure that it is not in Eco mode? Eco is the default mode on mine and I have to press the SRT button twice to get into the configuration that I like to drive in.
So yours defaults to Eco mode? That's not right. Eco must be selected.
 

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Challenger SRT 392
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9,322 Posts
I think if you select ECO while you are driving and then shut it off, it will remain in ECO by default the next time you start it. That's how my SRT 392 is anyway.


Sent from my SM-N920T using Tapatalk
 

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2021 Ram TRX
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1,589 Posts
I never selected that so I wouldn't know :)
I pushed the Eco button once on accident. Does that count?

My Hellcat gets damn near 24mpg on the highway with the cruise set, that’s “eco” enough for me. While bouncing around town it does better than my Power Wagon, so I’m good with the fuel economy.
 
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