[Scott K.]

Had my 2019 redeye to a perf shop here in south Florida . Added their phase 1 kit.
They use a mustang Dyno.
Post install Dyno run Print out says 790 adjusted HP, apparently at the wheels ….
Adding 15 percent for the 8 speed automatic transmission gives me 908 HP at the flywheel?
car computer is showing up from 797 to 857…. Thoughts ?

 

[rayzazoo]

Had my 2019 redeye to a perf shop here in south Florida . Added their phase 1 kit.
They use a mustang Dyno.
Post install Dyno run Print out says 790 adjusted HP, apparently at the wheels ….
Adding 15 percent for the manual transmission gives me 908 HP at the flywheel?
car computer is showing up from 797 to 857…. Thoughts ?

What was the baseline dyno and peak rpm?

What were the parts used in the phase 1 kit? 2.85 pulley, tune, fuel octane?

 

[Booky]

Had my 2019 redeye to a perf shop here in south Florida . Added their phase 1 kit.
They use a mustang Dyno.
Post install Dyno run Print out says 790 adjusted HP, apparently at the wheels ….
Adding 15 percent for the manual transmission gives me 908 HP at the flywheel?
car computer is showing up from 797 to 857…. Thoughts ?

Is a manual transmission part of the phase 1 kit?


.

 

[Ron b]

Is a manual transmission part of the phase 1 kit?


.

🤣

 

[Scott K.]

Is a manual transmission part of the phase 1 kit?


.

No, My apologies, meant 15% for the automatic transmission that comes stock in the car which is the percentage the shop estimated…

 

[Scott K.]

What was the baseline dyno and peak rpm?

What were the parts used in the phase 1 kit? 2.85 pulley, tune, fuel octane?

There in lies part of the problem , a baseline was never done. I don’t see how I will know exactly how much I gained without a baseline. That being said estimations were used which is clearly not the way to do it but I had no choice.
The post install Dyno ran up to 6600 RPM.
The phase 1 included: the 2.85 pulley, larger injectors, “racing spark plugs”,170 degree thermostat, tune using my daily 93 octane fuel …

 

[Snowman]

What gear was it in for the pull? What rear end gears? These can both affect whp. My SS is getting built now and the baseline pull was only 674 whp on a Mustang. That was in 5th gear (auto) and 3:09’s. It’s the delta that matters, but without a baseline you won’t know that. It’s also not just about the max hp. It’s the area under the curve that matters. A concave curve will beat a convex curve eight days a week, everything else being equal.

 

[BigDaddyEureka]

First, the "857" on the display doesn't really correlate to anything particular. It's just a string read out of the config file.

Second, 790 at the wheels for a comparatively small set of mods isn't terrible at all. Certainly enough to squash unmodded Mustangs, Camaros, some Porches...

Third, there's a whole swamp of debate on dyno types and results. Just remember that a dyno is just a tuning device...what matters is how it works for you!

Get out there and enjoy it!

 

[Scott K.]

First, the "857" on the display doesn't really correlate to anything particular. It's just a string read out of the config file.

Second, 790 at the wheels for a comparatively small set of mods isn't terrible at all. Certainly enough to squash unmodded Mustangs, Camaros, some Porches...

Third, there's a whole swamp of debate on dyno types and results. Just remember that a dyno is just a tuning device...what matters is how it works for you!

Get out there and enjoy it!

Thank you ….. I really go by the seat of my pants . My red eye stock I felt was a beast . I’ve had it to the track, and hustles pretty good. With those mods while I agree with you it was not a ton of things, I did find that I definitely felt a difference. I guess I was just trying to correlate all the numbers…..i love this car . My daily driver .

 

[Scott K.]

What gear was it in for the pull? What rear end gears? These can both affect whp. My SS is getting built now and the baseline pull was only 674 whp on a Mustang. That was in 5th gear (auto) and 3:09’s. It’s the delta that matters, but without a baseline you won’t know that. It’s also not just about the max hp. It’s the area under the curve that matters. A concave curve will beat a convex curve eight days a week, everything else being equal.

Appreciate the reply . They did not do a baseline … I suspect for a reason . The claim is 100 HP increase. With no baseline impossible to tell BUT I am happy with the shop . Fair pricing , answered all questions . Kept to their turn around promise , I feel the difference for sure .. I don’t have 309 option and I believe it was fifth gear… …

 

[rayzazoo]

There in lies part of the problem , a baseline was never done. I don’t see how I will know exactly how much I gained without a baseline. That being said estimations were used which is clearly not the way to do it but I had no choice.
The post install Dyno ran up to 6600 RPM.
The phase 1 included: the 2.85 pulley, larger injectors, “racing spark plugs”,170 degree thermostat, tune using my daily 93 octane fuel …

For a few estimations:

OEM 3.35 pulley, 700cc injectors, Bosch R6 spark plug, 203 tstat, 91 octane
Stock Redeye SAE: ~712 rwhp / 812 hp @ 6400 rpm = 12.3% drivetrain loss (87.7%)
Stock Redeye: ~ 698 rwhp / 797 hp @ 6300 rpm = 797 x .877
Stock Redeye: ~695 rwhp / 793 hp @ 6200 rpm = 793 x .877
Stock Redeye: ~17 rwhp / ~19 hp 200 rpm difference
Max engine speed: 6500 rpm

3.17 hellaphant pulley, 700cc injectors, Bosch R6 spark plug, 180 tstat, 91 octane
Direct Connection Stage II: ~734 rwhp / 837 hp (unknown rpm) = 837 x .877

2.85 pulley, larger injectors, "racing" spark plugs, 170 tstat, 93 octane
Modded SAE: 790 rwhp / 900 hp @ 6600 rpm = 790 / .877
Modded: 773 rwhp / 881 hp @ 6400 rpm = 790 - 17 and 900 - 19

2015-2022 Hellcat-Redeye-Demon-SS Peak HP/TQ Comparisons

2015 - 2017 Hellcat (compared to base 2015 Hellcat): 714 HP @ 6200rpm measured, 707 HP @ 6000rpm advertised 652 TQ @ 4800rpm measured, 650 TQ @ 4800rpm advertised 2018 Hellcat (+ electric power steering, widebody option with 20x11 rims) 730 HP @ 6200rpm measured, (+16 HP), 707 HP @ 6000rpm...

www.hellcat.org

 

[Scott K.]

For a few estimations:

OEM 3.35 pulley, 700cc injectors, Bosch R6 spark plug, 203 tstat, 91 octane
Stock Redeye SAE: ~712 rwhp / 812 hp @ 6400 rpm = 12.3% drivetrain loss (87.7%)
Stock Redeye: ~ 698 rwhp / 797 hp @ 6300 rpm = 797 x .877
Stock Redeye: ~695 rwhp / 793 hp @ 6200 rpm = 793 x .877
Stock Redeye: ~17 rwhp / ~19 hp 200 rpm difference
Max engine speed: 6500 rpm

3.17 hellaphant, 700cc injectors, Bosch R6 spark plug, 180 tstat, 91 octane
Direct Connection Stage II: ~734 rwhp / 837 hp (unknown rpm) = 837 x .877

2.85 pulley, larger injectors, "racing" spark plugs, 170 tstat, 93 octane
Modded SAE: 790 rwhp / 900 hp @ 6600 rpm = 790 / .877
Modded: 773 rwhp / 881 hp @ 6400 rpm = 790 - 17 and 900 - 19

2015-2022 Hellcat-Redeye-Demon-SS Peak HP/TQ Comparisons

2015 - 2017 Hellcat (compared to base 2015 Hellcat): 714 HP @ 6200rpm measured, 707 HP @ 6000rpm advertised 652 TQ @ 4800rpm measured, 650 TQ @ 4800rpm advertised 2018 Hellcat (+ electric power steering, widebody option with 20x11 rims) 730 HP @ 6200rpm measured, (+16 HP), 707 HP @ 6000rpm...

www.hellcat.org

I now have my homework cut out for me … I look forward to crunching the numbers . Thank you very much for taking the time to post this info . Much appreciated !