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Discussion Starter #1 (Edited)
A few months back I traded in my 2017 Hellcat Challenger automatic for 2019 Hellcat Challenger automatic 17 at the drag strip would always run anywhere from 127- 129 11 teens to high tens in the quarter stock with drag radials
My 2019 best time so far 11:18 at only 124 it is like it 2 to 4 miles an hour slower in the 1/8 through the 1/4 with 305/45/ 18 MT drag radials
 

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If Allpar is correct your 2019 is actually up on HP from the 17. My 2019 is still to new to even think about going to the track.
 

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I have a 2017 curious to see if newer models 1/4 mile times are the same or faster??
 

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Consider the DA of your area as well. For a lot of the country, DA is pretty high right now and definitely affects performance. Both 2.62 gears?
 

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A few months back I traded in my 2017 Hellcat Challenger automatic for 2019 Hellcat Challenger automatic 17 at the drag strip would always run anywhere from 127- 129 11 teens to high tens in the quarter stock with drag radials
My 2019 best time so far 11:18 at only 124 it is like it 2 to 4 miles an hour slower in the 1/8 through the 1/4 with 305/45/ 18 MT drag radials
The 17's and earlier cars are faster. It is because the tune in the cars is better. I have an 18 and compared the tune from it to 16's and 17's. The earlier car have more timing and they take less timing out for intake temperatures over 140 degrees. Some people have 93 octane and some only have 91 so cars can pull more timing if it knocks on 91 than 93. It all makes a difference in MPH and ET, as well as DA does. My 18 only has a tune and a drag pac and it runs 10.42 @ 135 on 100 octane also have a 91 tune and it runs 10.8's @ 129. In last revision I had 2 degrees more timing put in for the 100 octane tune from 3500rpm to 6400rpm and it went from 133 to 135 and the DA was 1700. So I hope this helps with any questions you may have...
 

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The 17's and earlier cars are faster. It is because the tune in the cars is better. I have an 18 and compared the tune from it to 16's and 17's. The earlier car have more timing and they take less timing out for intake temperatures over 140 degrees. Some people have 93 octane and some only have 91 so cars can pull more timing if it knocks on 91 than 93. It all makes a difference in MPH and ET, as well as DA does. My 18 only has a tune and a drag pac and it runs 10.42 @ 135 on 100 octane also have a 91 tune and it runs 10.8's @ 129. In last revision I had 2 degrees more timing put in for the 100 octane tune from 3500rpm to 6400rpm and it went from 133 to 135 and the DA was 1700. So I hope this helps with any questions you may have...

This is interesting ....have you read the data logs from both cars? How much of a timing difference between the 2018 and the 2017 and earlier ? Super interested ..
 
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This HAS to be the most earth shattering news I've heard about Hellcats since they came out in '15 !! This is bound to hurt sales of all Hellcat models. How dare FCA de-tune engines and purposely mislead the public like that! And to top it off, they claim 10 more HP than the earlier years!!! I see a class action law suit coming up....
 

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The 17's and earlier cars are faster. It is because the tune in the cars is better. I have an 18 and compared the tune from it to 16's and 17's. The earlier car have more timing and they take less timing out for intake temperatures over 140 degrees. Some people have 93 octane and some only have 91 so cars can pull more timing if it knocks on 91 than 93. It all makes a difference in MPH and ET, as well as DA does. My 18 only has a tune and a drag pac and it runs 10.42 @ 135 on 100 octane also have a 91 tune and it runs 10.8's @ 129. In last revision I had 2 degrees more timing put in for the 100 octane tune from 3500rpm to 6400rpm and it went from 133 to 135 and the DA was 1700. So I hope this helps with any questions you may have...
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There were tuning and mechanical changes in 2018. New cam, revised blower, EPS, new hood/intake in 2019 and revised PCM tuning. It had much to do with the introduction of the Trackhawk and meeting the global issues of adding that platform. However, the 2019+ cars make 745hp SAE.

It may very well be a performance trade off if the pre-2017 cars run a higher threshold for timing when good gas is present versus a 2018+ car being more sensitive to a smaller window.

My 2019 M6 car did 122+mph with a badly bogging launch in humid air. Should be much better in a few weeks with the Fall air.
 
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Discussion Starter #15
So what I've been reading is if I go get it custom to send the guards should wake up and run a lot better than it does now because I ran it again today car still would go no quicker than 1120s and only a hundred and twenty four and had crappy 60ft times wouldn't do better than 168 both of them were in the 1700 and I'm running the 18 in Mickey Thompson SS and the track was prepped
 

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So what I've been reading is if I go get it custom to send the guards should wake up and run a lot better than it does now because I ran it again today car still would go no quicker than 1120s and only a hundred and twenty four and had crappy 60ft times wouldn't do better than 168 both of them were in the 1700 and I'm running the 18 in Mickey Thompson SS and the track was prepped
Sounds like a properly tuned (only tune) 15-17 vs the same quality of tune done to 19-20 , should be yielding more power in theory
 
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