[luvboost]

Hey guys, car goes in March 9th before anyone decides to tell me to "take it to the dealer" lol but since I have to wait due to it being crazy busy / lack of labor available at dealers, I figured I'd ask here.

Has anyone with a 2020+ had issues with their new HC. This isn't my first one and I've had the ZF so I know the behavior isn't normal (no one would think it is) but in track mode it feels like it misses a shift or something and the trans is going to fall out the bottom of the car at partial throttle mid way through the gear (example: 3rd to 4th). In "auto" mode it doesn't do this, shifts like butter. Not sure wtf could be wrong but when I was driving it home from the dealer (had 5 miles on it) I noticed even in auto on the highway every once in a while from like 8th to 5th it would jerk just a bit. My dad that was riding with me also noticed the same. Wasn't a crazy jerk just enough to know that it wasn't right.

Anywho just wondering if anyone else has ran into this issue in track or a similar one. Since FB pages are garbage, I consider y'all my only HC family

Long live the forums lol

either way thanks for any input

 

[luvboost]

Also, to note. Car has about 700 miles now. I originally figured it might be software learning but this behavior resembles more of a factory defect. To add, my previous WB didn't have any issue like this.

 

[baabootoo]

Have you driven them a lot in TRACK mode? It is a LOT different with the downshifts and upshifts. I LOVE the way it works, but do not drive it like that on the street though. 700 miles is VERY low too. Did you break it in per manual instructions?

 

[luvboost]

Break in didn't really go as planned since I had to drive it 400 miles home from the dealer but as much of it as I could follow I did I.E. RPM limitations, no hot rodding, etc.. No track events or anything and it's headed in for a 1000 mile oil change (I lied on mileage it's around 900). Followed the same process with my 2020 WB that had 50 miles on it and did not have the same outcome.

 

[baabootoo]

They are REAL particular on using the paddle shifters, flooring until it shifts, etc. It's tough since you'll be spinning the tires a LOT! This, for 200 miles which is a lot in the city.

300 to 500 miles (483 to 805 km):
•Exercise the full engine rpm range, shifting manually (paddles or gear shift) at higher
rpms when possible.
•Do not perform sustained operation with the accelerator pedal at wide open throttle.
•Maintain vehicle speed below 85 mph (136 km/h) and observe local speed limits.

 

[luvboost]

I've been at wide open throttle probably twice since 500. One time I know was was in track (no paddles) the other was with paddles. I'm not by the book on break in but I always understand that motors of this nature are not like a 5.3 liter time a dozen LS truck motors. 0-400 break in miles I was easy on it (driving home on the highway) probably not the best break in but better than doing burnouts and donuts in a parking lot which I'm sure happened more often than not.

That said I wish I could take you for a ride. The first time the issue happened I swear it felt like I ran over a cement parking block. Felt like the trans no longer wanted to be friends with the car anymore. It was nuts. In normal mode it acts completely fine with paddles. Only time I shifted in normal with paddles was to see if the issue was consistent between track / auto.

 

[baabootoo]

Yes, it is very harsh in TRACK mode for sure, BUT it works great, just like a stick shift.

 

[luvboost]

yeah mine doesn't. I like harsh or I wouldn't have purchased the viper LOL but this is defective harsh. My last ZF wasn't anything like this.

 

[Vet Rider]

Oh hai...LOL I have the same "issue". 21 Charger HC here. The car is not suited for street driving with track mode for the trans. According to my tuner, you are supposed to use the track trans mode with the shifter or paddles on a track. Its not made to run through the gears for pulls and quarter mile passes like older cars. The 21's have a newer calibration that changed a lot of things from the 20 and older cars. So some guy with a 19 will say "track mode is fastest, bestest." Well hes right for the older cars. The 21s are not like that. I drove mine and my buddies 18 and his was like super fast smooth shifting. Mine shifts VIOLENTLY like its a total manual. Huge hesitation between gears and then hard hit into the next.

Sport is faster for you to use for drag racing and highway pulls. And when you get a trans tune, its even better.

Here is my thread I posted about this as well.

Track mode on the street - transmission too harsh at WOT???

Im at a bit of a loss. Tonight I finally have put my new Charger HC into track mode to do a WOT pull from about a 20 roll. As expected, it spun bad and almost instantly the TC came in and choked the car to nothing power. Ok that was weird. I thought track mode (all options track), was going...

www.hellcat.org

 

[luvboost]

Oh hai...LOL I have the same "issue". 21 Charger HC here. The car is not suited for street driving with track mode for the trans. According to my tuner, you are supposed to use the track trans mode with the shifter or paddles on a track. Its not made to run through the gears for pulls and quarter mile passes like older cars. The 21's have a newer calibration that changed a lot of things from the 20 and older cars. So some guy with a 19 will say "track mode is fastest, bestest." Well hes right for the older cars. The 21s are not like that. I drove mine and my buddies 18 and his was like super fast smooth shifting. Mine shifts VIOLENTLY like its a total manual. Huge hesitation between gears and then hard hit into the next.

Sport is faster for you to use for drag racing and highway pulls. And when you get a trans tune, its even better.

Here is my thread I posted about this as well.

Track mode on the street - transmission too harsh at WOT???

Im at a bit of a loss. Tonight I finally have put my new Charger HC into track mode to do a WOT pull from about a 20 roll. As expected, it spun bad and almost instantly the TC came in and choked the car to nothing power. Ok that was weird. I thought track mode (all options track), was going...

www.hellcat.org

Happens to me in sport also. Auto is the only safe setting for me. Auto doesn't rev match though from what I've noticed.

 

[Ross61]

Dress it in men's close and take it back to the track and slap it around if it still acts funny.

Might take a few trips but, most trannys stop acting funny - eventually.

 

[Vet Rider]

Happens to me in sport also. Auto is the only safe setting for me. Auto doesn't rev match though from what I've noticed.

Theres more too with the 21. CAT enrichment was turned way up. If you are hitting the cat enrichment temps, your car can and will fall on its face. Mine did that too. I had to get an aftermarket tune to turn off all the shit in the tune thats holding the car back from being a hellcat. Its just 21's and up. So welcome to the party.

Im in the process of selling mine, too many issues and concessions to make it what I thought it was going to be.

 

[Xylander]

Turning off the cat enrichment is effectively turning off the cat cooling. This will result in dead cats pretty quickly. I disabled that same feature in my Mustang's tune and it baked the cats red hot anytime the car was running longer than 30 minutes. My cats died about 6 months later. The catalyst just started turning to powder.

 

[Vet Rider]

Turning off the cat enrichment is effectively turning off the cat cooling. This will result in dead cats pretty quickly. I disabled that same feature in my Mustang's tune and it baked the cats red hot anytime the car was running longer than 30 minutes. My cats died about 6 months later. The catalyst just started turning to powder.

That might have been the case with mustangs, but not on the hellcat. When properly tuned, the cat temps are better than stock without cot. I have tested this all ways. Stock, stock no cot, tuned no cot. I have the actual datalogs showing the temps and what the car did about it.

Besides if thats a problem, just get cat delete pipes or headers with no cats. These cars love freer flowing exhaust.

 

[Vet Rider]

Oh and here were the cat temps at redline in 4th.

Stock with cot - 1865f COT kicked in at 1701f taking boost to 5psi then to 0, lowering fuel pressure from 80 to 50 and running injector duty cycle to 115%. Lambda was also .73 which is like 10.0afr
stock with no cot - 1979f TQ management kicked in and closed the throttle and opened the bypass killing power, lambda went way lean at .90 and car fell on its face in between shifts.
tuned with no cot - 1849f No tq management, no cot engagement. Car held .86 lambda which is like 12.5afr through redline, bypass stayed closed and I saw 11psi boost through 4th into 5th and on. Injector duty cycle stayed at 69% at redline and all was perfect.

 

[luvboost]

Turning off the cat enrichment is effectively turning off the cat cooling. This will result in dead cats pretty quickly. I disabled that same feature in my Mustang's tune and it baked the cats red hot anytime the car was running longer than 30 minutes. My cats died about 6 months later. The catalyst just started turning to powder.

Curiosity killed the cat? lol

yeah mustangs to hellcats is like oranges to tomatoes. I get the premise behind it but this looks like a different issue probably software related.

 

[luvboost]

Oh and here were the cat temps at redline in 4th.

Stock with cot - 1865f COT kicked in at 1701f taking boost to 5psi then to 0, lowering fuel pressure from 80 to 50 and running injector duty cycle to 115%. Lambda was also .73 which is like 10.0afr
stock with no cot - 1979f TQ management kicked in and closed the throttle and opened the bypass killing power, lambda went way lean at .90 and car fell on its face in between shifts.
tuned with no cot - 1849f No tq management, no cot engagement. Car held .86 lambda which is like 12/5afr through redline, bypass stayed closed and I saw 11psi boost through 4th into 5th and on. Injector duty cycle stayed at 69% at redline and all was perfect.

Vet Rider, just read your thread and that's exactly what mine is doing. How are there only a few people talking about this?

 

[Vet Rider]

Vet Rider, just read your thread and that's exactly what mine is doing. How are there only a few people talking about this?

Well its winter across most of the country. So most are not beating on them. I live in florida so its loud pedal time all year. I have been to the track a few times stock even on a tire and have yet to do anything meaningful with all the nannies kicking in. Now that Im tuned, we found all my plugs are fouled and now that the car is running right, its misfiring bad at WOT approaching redline. It needs a few hundred dollars of plugs. ANd on top of that now I have both axles leaking. There have been other issues too.

And also my tuner is in the midwest and hes seen this with track trans on his car too. He has a 21 redeye charger and had a 21 HC charger. Both did it all. He was the one that said use the sport trans setting. And with his trans tune, its a BEAST. Car revs to 6400ish now and hits so hard like a DCT going into the next gear. The way I'd assume it should feel.

 

[luvboost]

Well its winter across most of the country. So most are not beating on them. I live in florida so its loud pedal time all year. I have been to the track a few times stock even on a tire and have yet to do anything meaningful with all the nannies kicking in. Now that Im tuned, we found all my plugs are fouled and now that the car is running right, its misfiring bad at WOT approaching redline. It needs a few hundred dollars of plugs. ANd on top of that now I have both axles leaking. There have been other issues too.

And also my tuner is in the midwest and hes seen this with track trans on his car too. He has a 21 redeye charger and had a 21 HC charger. Both did it all. He was the one that said use the sport trans setting. And with his trans tune, its a BEAST. Car revs to 6400ish now and hits so hard like a DCT going into the next gear. The way I'd assume it should feel.

Is your car lowered? Axles should otherwise be ok unless you're running some crazy HP. Where's your guy at in the midwest? Not going to touch mine until the warranty is closer to up just incase the trans falls out but otherwise I think that might be a good solution.

 

[Vet Rider]

Is your car lowered? Axles should otherwise be ok unless you're running some crazy HP. Where's your guy at in the midwest? Not going to touch mine until the warranty is closer to up just incase the trans falls out but otherwise I think that might be a good solution.

Nope my car is stock. No lowered or anything. And my tuner is Jeremy Satera with Satera Tuning. He works with Tim Barth and others. Hes very good. They are in IL.