[Spoolin]

I'm located in Minnesota right around 1000ft give or take. Temp at time of posted graph was 50*. Also, shouldn't my HP be peaking higher than my TQ on my graph? That confused me, but I could be wrong.

Earlier this morning I did a 2nd gear pull to 5th gear and it felt extremely underpowered. Graph showed under 400 HP.

Yeah, something isn't right then; with your DA it should still be at least 11.5 psi of boost. Have you went to the performance pages, like to switch from sport to track modes, and does it show the engine in red color?

 

[Anders31]

Yeah, something isn't right then; with your DA it should still be at least 11.5 psi of boost. Have you went to the performance pages, like to switch from sport to track modes, and does it show the engine in red color?

Yeah, I found out yesterday that on the Durangos the engine doesn't change color switching modes. I thought that was a true teller of something being wrong, but yeah for some reason they didn't do that for the Durango Hellcat.

Maybe someone can answer this.... At what point would HP overtake TQ on the engine graph in performance pages? Mine has yet to do that. I would figure (not being an expert) that I should be seeing HP overtake TQ at some point. My TQ appears to be at 600, my HP appears to be high 400's/50X max.

 

[Spoolin]

Yeah, I found out yesterday that on the Durangos the engine doesn't change color switching modes. I thought that was a true teller of something being wrong, but yeah for some reason they didn't do that for the Durango Hellcat.

Maybe someone can answer this.... At what point would HP overtake TQ on the engine graph in performance pages? Mine has yet to do that. I would figure (not being an expert) that I should be seeing HP overtake TQ at some point. My TQ appears to be at 600, my HP appears to be high 400's/50X max.

5252 rpm is where torque and hp meet and branch off, in so many words. HP should definitely be climbing higher than torque after 5252 rpm, if the cam and valve springs can keep up with the added rpm.

 

[Anders31]

Spoke with the SRT hotline, they told me to speak with the dealer. Spoke with the dealer, they seemed to think nothing is wrong as there’s no recalls.

Regardless I have an appointment next Monday

 

[audocat]

Spoke with the SRT hotline, they told me to speak with the dealer. Spoke with the dealer, they seemed to think nothing is wrong as there’s no recalls.

Regardless I have an appointment next Monday

Good luck, keep us posted!

 

[Anders31]

Good luck, keep us posted!

Thanks! Will do. The good thing about my dealer is the service tech is SRT Certified, SO hopefully he’ll understand what I’m trying to explain.

I just wish I didn’t care about my Mopar warranty. I’d just throw a pulley and a tune on it and make the power it should have.

 

[DEANGEL]

Never thought I would have to take a listed 710hp vehicle to the dyno to make sure it’s running at full potential…

Do you remember the 1999 Ford Mustang Cobra debacle? Guys were taking their cars to the dyno and they were coming up way short. Ford finally recalled all of the 1999 Cobras due to low horsepower.

 

[Hallberg138]

Vehicle now has 900 miles. I'm fairly certain there is no break in number for HP on these, or I wasn't told there was. I was given two red keys as well. Neither makes a difference, have tried both in the vehicle.

Maybe all is fine and my expectation of the vehicle putting me through the rear latch was too much!

I received my Durango Hellcat about a week ago and I was wondering the same thing. My Durango has 400 miles on it and today I tried my first highway pull and thought the Dyno graph looked a bit strange. My graph looks identical to yours. I assumed it was because it was still in break in mode or maybe my key was programmed wrong. I also received two red keys which I thought was strange. Ironically, I also live in Minnesota. I am waiting until 500 miles to do a launch, but I would assume if you do a launch your 0-60 should be in the 3.5-3.8 range. If it’s any slower than that then there is definitely hp lacking. Let me know if you find anything out, I am very interested!

 

[16GoManGoHC]

I have a 16 Challenger Hellcat which the display looks different but here’s what mine reads. Some mods yes but it was close to rwhp measured on the dyno, I would think a newer vehicle would be even more accurate?

 

[Anders31]

Do you remember the 1999 Ford Mustang Cobra debacle? Guys were taking their cars to the dyno and they were coming up way short. Ford finally recalled all of the 1999 Cobras due to low horsepower.

I don't remember this (I was like 13), but I do know Jeep had an issue with bad programming on a lot of Trackhawks. Not sure if this ever made it to other Hellcat based vehicles or not.

I received my Durango Hellcat about a week ago and I was wondering the same thing. My Durango has 400 miles on it and today I tried my first highway pull and thought the Dyno graph looked a bit strange. My graph looks identical to yours. I assumed it was because it was still in break in mode or maybe my key was programmed wrong. I also received two red keys which I thought was strange. Ironically, I also live in Minnesota. I am waiting until 500 miles to do a launch, but I would assume if you do a launch your 0-60 should be in the 3.5-3.8 range. If it’s any slower than that then there is definitely hp lacking. Let me know if you find anything out, I am very interested!

So from what I'm gathering there is no break in mode. The second your vehicle comes off the dealer line, you have access to full power. You however don't have access to the launch control until 500miles.

While my 0-60's are anywhere from 3.5-4.0 they aren't consistent, and my midrange/upper power just seems a lot less than I imagined. I guess I'll find out on Monday.

Seeing/hearing TH's run pretty consistent 3.4 -3.0 stock makes me wish I looked harder for one. I realize the Durango is heavier by like 500lbs. I just figured it would be pretty comparable. After reading some other opinions elsewhere it seems there's some others who're a little let down at power. I do believe these are people that have had TH's or other vehicles that were competitive power wise.

Just to clarify. I'm not saying 3.5 0-60 is a disappointment. What I am a little disappointed in is the other power through midrange speeds/highway. I feel like my onboard graphs reflect I'm not near full HP. If STOCK after drivetrain loss the power is at 600+- I feel/see that I'm not near there. Unless the onboard dyno is off and I just figured it would be more of a kick in the chest when hitting the gas.

I know one guy mentioned he had one Durango Hellcat and switched to another, he said his second felt much slower......hmmmm

Sorry for the novel.

I have a 16 Challenger Hellcat which the display looks different but here’s what mine reads. Some mods yes but it was close to rwhp measured on the dyno, I would think a newer vehicle would be even more accurate?

Yeah, I would as well. I'm seeing over 600hp stock from various well known tuners that have dyno'd these. My graph is showing 500MAX or less. If I'm missing 100hp, I would sure be happy to find it!

I posted above, but one person in a group I'm in said he switched to a different Durango Hellcat and noticed his new one felt much more lethargic....

 

[Rockster]

Great info, thank you. It makes sense what you posted. I just figured/hope I was down on power due to lack of "wow" factor. This is my first Hellcat motor, I'm coming from 3 SRT Jeeps (6.4l). I was always figured it was snap your neck power.

Part of my issue is my butt dyno is very underwhelmed. Maybe a turbo vehicle would have impressed me more. At the current moment I haven't been happy with the power since I took delivery. I'm just trying to cover all bases and gather as much information as I can. I was expecting a lot more "thrown into the seat" feeling and I'm just not getting it! Dead stop launch it isn't terrible, but I'm seeing only a few tenths better than my 6.4 was (disappointing). Once I get anywhere above 30mph and hit it, it's just not impressive to me one bit. Oh well....

I didn't push my Hellcat early on. I adhered to the break in and also wanted to give myself time to adjust to the vehicle. Moving from a 420hp vehicle to a 707hp vehicle (the 2 months I spent with my 2018 Scat Pack prior to buying the Hellcat didn't really count since it was in break in for much of that time) is quite a step up.

Don't recall when I started pushing the Hellcat more. It was past the nominal break in probably in the 4K to 5K mile range. With this number of miles under my belt I was more comfortable with the car -- which I used mainly for my 30 mile work commute and this didn't afford me with any opportunity to explore the car's limits.

When I did once in a while push the car it was not from a dead stop. It was clear to me without judicious throttle I'd fry the rear tires in no time.

But from a roll...I recall one time as I was going up an on ramp to the freeway, a ramp I had driven up uncounted times before in other cars, and after having gotten the Hellcat moving at a reasonable speed "nailed" the pedal to the floor. I got pushed back in the seat big time and at some speed the car got light. There was a slight hump/rise in the road that I never noticed before with other cars but with the Hellcat it could reach speeds only dreamed about by other cars.

There were other times, too. Quite the experience to hammer down a car even at some speed and with the A8 downshifting have the rear tires break loose.

I will point out the Hellcat has good (understatement of the year) power but to really get the most from it just pushing down on the gas pedal is not the way. Under normal circumstances yeah this is quite sufficient. But to really experience the acceleration the car is capable of I found using the -paddle to downshift the transmission to the "ideal" gear concurrent with flooring the gas pedal delivered acceleration that was damn near plaid...

 

[Rockster]

So from what I'm gathering there is no break in mode. The second your vehicle comes off the dealer line, you have access to full power. You however don't have access to the launch control until 500miles.

Not to put too fine a point on it while you have access to full power -- theoretically that is there is no limiter -- the engine is new (obviously) and a new engine has considerable friction. This is one reason why break in generally requires one keep RPMs low and avoid sustained operation at higher RPMs. What this friction does is sap power.

With a number of cars over the years my experience has been the engine really needs some miles beyond the nominal break in miles to really get "loose" enough to operate up to its full potential. This is not a new discovery but something that car makers have known for years. Lab and field studies have found break in continues past nominal break miles for in some cases thousands of miles. Sure the added break in miles no longer provides any benefit one can feel in the seat of his pants but it still happens.

My advice to you is just adhere to the factory break in guidelines. If not forbidden in the owners manual change the oil early a few times -- with my Hellcat I had the oil changed at around 500 miles, 2K miles then again at 5K miles. The engine will break in and the friction losses will go way down and then you can begin to experience more of the engine's potential.

 

[DrRouse]

So I’m seeing around 500hp on my Hellcat Durango and curious if this is low? The Tq is also higher than HP which I figured would be the other way around. Just trying to figure out if something is going on. Really doesn’t feel that powerful once you get moving. Not trying to complain, but want my ducks in a row before I go back to my dealer again. Attached is a 0-90 pull, 8XX alt, 50* temp. Looking at Trackhawk graphs they’re showing Hp above 600
View attachment 582051 View attachment 582052

 

[DrRouse]

I have seen 650 on my stock '15 Challenger M6

 

[SpecOps Veteran]

So I’m seeing around 500hp on my Hellcat Durango and curious if this is low? The Tq is also higher than HP which I figured would be the other way around. Just trying to figure out if something is going on. Really doesn’t feel that powerful once you get moving. Not trying to complain, but want my ducks in a row before I go back to my dealer again. Attached is a 0-90 pull, 8XX alt, 50* temp. Looking at Trackhawk graphs they’re showing Hp above 600
View attachment 582051 View attachment 582052

I’ve hit 700 on my Hellcat Durango and 780 on my Redeye charger.

 

[3XBlackCHC]

I would not worry about the internal Dyno numbers one bit. They are certainly not accurate to begin with. I began reading this thread and decided just to post my own experience, so I haven’t read everything that has been stated.

The only way to get accurate dyno numbers is to take it to a dyno. I believe the internal dyno is simply for entertainment value.

Dyno numbers aren’t worth the screen/paper they’re printed on anyway. Unless it makes you feel better telling everyone what WHP/WTQ your car makes. Who really cares.

If you really care, take it to a track and run the 1/8th or the 1/4. Check your times and your trap speed. If the MPH is way low (much lower than 115mph) then maybe there is something to be concerned about. If you’re somewhere in the neighborhood (depending on DA etc) then I wouldn’t worry about internal dyno numbers, and just start enjoying the thing. I wish I had one honestly.

BTW - I didn’t see 707hp on the internal dyno until AFTER I modified mine (‘18 CHC; which I DO NOT recommend doing what-so-ever, unless you’re willing to potentially go on a life changing roller coaster ride). I rarely ever look but I happened to have had someone taking video one time after modding and was surprised to see exactly 707 so I took a screen shot. Not that exciting but again, this was seen AFTER modding heavily.

Hope this helps.

 

[S8ER01Z]

The only way for us to get 3.4-3.6 0-60 is launching with 3-4psi using torque reserve. If I try to just leave at idle I see 4.0+ 0-60 and it feels weak. If using launch control move the RPM up more and see if it’s still acting the same. While foot braking or manually launching you can view the srt pages (boost gauge) in the dash or center console… just hold brake and quickly give it a little throttle until the idle changes then slowly feed more throttle until you see 4psi flicker (it doesn’t hold 4, I think 3.99 is max boost) then pull brake and smash throttle. It’s night and day for me.

 

[Anders31]

The only way for us to get 3.4-3.6 0-60 is launching with 3-4psi using torque reserve. If I try to just leave at idle I see 4.0+ 0-60 and it feels weak. If using launch control move the RPM up more and see if it’s still acting the same. While foot braking or manually launching you can view the srt pages (boost gauge) in the dash or center console… just hold brake and quickly give it a little throttle until the idle changes then slowly feed more throttle until you see 4psi flicker (it doesn’t hold 4, I think 3.99 is max boost) then pull brake and smash throttle. It’s night and day for me.

This makes sense. Thanks.

I wonder if this also correlates to my intermittent power issue when hitting it at a speed of say 20mph. Sometimes it's fine, other times it feels underpowered. Maybe the boost just isn't building or something.

On another note. Should I build full boost at any speed when I put the pedal all the way down? Should it be instant full boost, or is it built up to max RPM?

 

[RB185AFM]

Check to see if your sucking in oil. It will lower octane and pull trimming. Also pay attention to gas. My Redeye was only pulling 690 hp at sea level in cool air. I tried different fuel over a few tanks, and I finally hit 787 hp. I suspect a bit of bad 91 or some oil getting sucked in is causing the computer to pull trimming to protect. I’m waiting to get into my dealer as I’m getting detonation now, and I can’t pull over 700 anymore. My guess is im Sucking down to much oil. I burned 1.8 quarts in under 2k miles! Changed at 500 miles and was down almost two quarts by 2200 miles. I’m guessing oil consumption is the reason I can no longer make 700 hp. Dodge says oil consumption is normal for first 5k miles lol.

 

[Anders31]

Check to see if your sucking in oil. It will lower octane and pull trimming. Also pay attention to gas. My Redeye was only pulling 690 hp at sea level in cool air. I tried different fuel over a few tanks, and I finally hit 787 hp. I suspect a bit of bad 91 or some oil getting sucked in is causing the computer to pull trimming to protect. I’m waiting to get into my dealer as I’m getting detonation now, and I can’t pull over 700 anymore. My guess is im Sucking down to much oil. I burned 1.8 quarts in under 2k miles! Changed at 500 miles and was down almost two quarts by 2200 miles. I’m guessing oil consumption is the reason I can no longer make 700 hp. Dodge says oil consumption is normal for first 5k miles lol.

Great advice.

As I mentioned a few times on cruise control at highway speeds I've very briefly felt almost like a surge sensation. It was very very light but to me felt like a fuel issue or something. But if it's sucking more oil and pulling timing maybe that's part of my issue. I'm headed in for service on Monday and will have the oil changed as well.

I actually filled up with gas yesterday from nearly empty and I swear my exhaust tone is louder inside. Maybe I'm crazy, but it just seemed to drone more. Could be better gas?!

Now, I don't have a catch can. Good thing to buy? I've only used one once before in a previous life.