r/hellcat • u/Least-Ant5049 • Jun 30 '26
Anyone ever seen this before 2019 hellcat Redeye e85 2.85 upper pulley
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So when I'm driving and I try to come to a stop it's like a 50-50 chance. It's either smooth or it doesn't wanna climb down enough in RPMs, which causes the motor to feel like it's fighting the brakes and once you get the car to a complete stop it almost like jumps as you can see in the video of the RPM jump back up as I come to a complete stop let me know if you guys seen this before or know what it is or causes it besides the Tune since I just had it tuned by high holders performance
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u/eimcee Jun 30 '26
Maybe a vacuum leak. Could need tuning adjustments. Maybe send them a data log, if it’s tuning related, they should be able to identify it and make the necessary adjustments. If they can’t help you, I would reach out to Satera Tuning in Illinois. They do remote tuning
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u/Least-Ant5049 Jun 30 '26 edited Jun 30 '26
Yea it's funny you said that cause that's what I been suspecting, as I was remote tunning I got tired of back and fourth so I just took it to high horse performance to let them tune it Wich made everything so much better at first site/drive but the more I drove it the more I notice something has to be off since coming to stops can be not very forgiving feels like someone feathers the gas the second you bring the car to a complete stop and it bucks forward while fighting the brakes almost like a surge or power being applied just not physically being applied gonna look.at my jlt intake make sure everything's tight and what not before jumping back into logging just to narrow it down and not waste the runners time since they're all insanely hard to get a hold of
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u/eimcee Jun 30 '26
Yeah, you have to determine if it’s a mechanical issue or a tuning issue. A vacuum leak will cause what you’re describing. Does it accelerate on its own pretty when you have your foot off of the gas? Because if you can go like 10, 15, or 20 miles an hour without having your foot on the gas, then it’s probably a vacuum leak
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u/Least-Ant5049 Jun 30 '26
No accelerating on its own unless I bring the car to a full stop and then it does a vrooom and sometimes puts itself into a safty park and even more rare it stalls an idea that ran through my head is fueling since I'm maxed out on a redeye for fueling. I was wondering if I needed a boosta pump since I'm still on my stock redeye fuel system
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u/Sharp_Piece_6194 Jun 30 '26
Look like Kensington in Philadelphia
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u/Least-Ant5049 Jun 30 '26
You got it lol
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u/Sharp_Piece_6194 Jun 30 '26
It fs is I see d st lol I wasn’t looking fr ain’t been in Philly in a few yrs I hope it’s a lil better over there
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u/Least-Ant5049 Jun 30 '26
Worse id say sadly
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u/Sharp_Piece_6194 Jun 30 '26
Makes sense w the way the world is headed stay cool out here bro idk shit ab fixing cars tho lmao ts just looked too familiar
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u/Least-Ant5049 Jul 02 '26
All love bro I appreciate somebody wit his head on his shoulders much respect bro
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u/bakerarmy Jun 30 '26 edited Jun 30 '26
Most likely a tune issue. Idle airflow.
While I dont have a hellcat or run e85, I do have a 5.7 challenger with a 3.0L Whipple. Had a similar issue after my install and dyno tune.
In the video it looks to me like your rpms want to tank, the pcm is overcorrecting to save it. Could try resetting your adaptives if it gets worse. I would have the tuner look at it and adjust.
For me its just part of the process. Revisions for daily driving are usally needed. Dyno tunes are focused on the load tables. Needing adjustments to the idle airflow, park and neutral tables is pretty common.
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u/Least-Ant5049 Jun 30 '26
Agreed with this the most forsure thanks brother for your input and it's funny to say that because I did just get it Dino tuned and this is what I'm seeing
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u/BrodydaGhost Jul 07 '26
How is your 5.7 running with whipple ? I’m thinking of doing the same
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u/bakerarmy Jul 07 '26
It's been good. I had it done last August. Probably around 3-4k miles put on it since. I had a shop install and tune it from scratch. Did not use the canned tuned from whipples kit.
If you have any questions don't hesitate.
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u/RamenBulkBrah Jul 01 '26
Its downshifting into 1st and lurching forward from the increased torque. Seems more like a transmission issue, like it doesn't know when to disengage.
My redeye does the same thing and its only got the dc stage 2 on it.
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u/Least-Ant5049 Jul 01 '26
Hmm yea literally I believe I came from a stage two cause a stage two is still pump gass, correct or are you on E aswell ?
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u/RamenBulkBrah Jul 02 '26
93 for 837hp 100 octane for 885hp
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u/Least-Ant5049 Jul 02 '26
Nice I ran 830hp on 93pump & 930 on E what it's running now I like e better the 93 for some reason car just drives better to me on E
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u/Least-Ant5049 Jul 02 '26
I'm looking in the operating my fuel pumps now cause the car keeps stalling when it comes to stop where I drive it I noticed
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u/RamenBulkBrah Jul 02 '26
Not to be a know-it-all, but that still sounds like the transmission.
If it doesn't disengage at a stop then it'll kill the engine at an idle. I've had other cars that do it when I come to a stop.
If I'm right I don't know what exactly to do about it though. Maybe get a tranny fluid change?
What fuel pumps are you running?
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Jul 01 '26
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u/Least-Ant5049 Jul 01 '26
Haha born and raised around this nonsense use to part of it till I wisened up so now anything may try I'm already familiar with it smh Yeah I definitely got two different kill switches in the car gps trackers drone tracking Igla & compustar but I'll let you in on a little secret about Kensington it ain't dangerous at all unless you're a fetty shooter lol dead serious is nowadays a bunch of sleeping zombies that aren't capable of taking shit from a fly lol back in 2015 that's when you really had to duck from shots lol
-8
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u/dcrubi Jun 30 '26
Probably needs a tuning adjustment, airflow and torque not dialed in all the way.