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Challenger SRT Hellcat
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Discussion Starter · #1 ·
Greetings - I finally went to my second test and tune - first with the car with these mods. It is 2015 Hellcat Challenger A8 car. Mods as follows: ARH Long Tube Headers 1”7/8 Primaries 3” Collectors and ARH 3” Exhaust W/ Cats, Diablo Sport PCM, 80 Thermostat, Metco 2.85 Upper Pulley, Injector Dynamics 1050 Injectors, JLT Cold Air Intake, Driveshaft Shop Aluminum Drive Shaft, S&M Drive Shaft Loop, Per4ormance Development Differential Integration System, Mopar 3.09 Geared Limited Slip Differential, 20" Factory Repo Wheels and MT E/T Street S/S P305/35R20 Tires. Email Tune by HHP Josh Schwartz. I did all the work except the Diff and Diff brace which I had a lot help with. 93 Octane
I went with 18 PSI Pressure. In my haste I forgot to put the car in the correct configuration so the Trans, Traction was in street, Suspension was Sport the car ran a 10.64 @ 133 - 60 foot was 1.578 and my reaction time was abysmal (yes I know go on last yellow....but it has been a while since I have done this. The air was "Shitty"
80.632.2548.230.134ene
So I know I need a lot of work but I believe the car is faster than the driver. Thought I would post this up and wait for comments TIA
 

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MPH you are good for another couple tenths depending on were your car torque is.. Actually for summer heat/Air your as quick or quicker than most redeyes. Some 18 inch rims will get you those couple of extra tenths add cold air good DA and Cecil track your 10 flats. Was this at Mason Dixon?

If so we may run into each other one day.
 

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Challenger SRT Hellcat
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Discussion Starter · #4 ·
MPH you are good for another couple tenths depending on were your car torque is.. Actually for summer heat/Air your as quick or quicker than most redeyes. Some 18 inch rims will get you those couple of extra tenths add cold air good DA and Cecil track your 10 flats. Was this at Mason Dixon?

If so we may run into each other one day.
Yes it was at Mason Dixon Friday the 23rd of July. It got cooler at night and we all had to wait due to a car caught caught fire....then all bets were off as the car spun long enough to piss off the track people. We were also hot lapping the cars as well so my second run was a 10.7 and when I realized I had not switched to my supposed race set up the car was too hot to tell if there was any difference. I also (stupidly) finally remembered the as the tires heat up the pressure increases but I never was able to repeat that first run. I hoping to be out at 75/80 if they open this Saturday - but the weather looks to be worse temp wise. BTWI see you are a Navy Vet - same here SCPO just under 28 years retired in 2011.
 

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2019 Challenger Hellcat Widebody (destroyer grey)
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642 Posts
Very respectable run man. What did it dyno at? I'd assume near 800 whp?
 

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No clue. I need to get a camera or something to watch that....I was enjoying the view outside.
Should be data logging the runs. Iat's short-term knock retard, fuel pressure, injector duty cycle, boost, and air fuel ratio are important to monitor.
 

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Challenger SRT Hellcat
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Discussion Starter · #14 ·
Should be data logging the runs. Iat's short-term knock retard, fuel pressure, injector duty cycle, boost, and air fuel ratio are important to monitor.
[/Q
Should be data logging the runs. Iat's short-term knock retard, fuel pressure, injector duty cycle, boost, and air fuel ratio are important to monitor.
I take it that is something that would be done with the Diablo Tuner and my laptop? I wish there was a way to store this data for retrieval after the run unless I am totally oblivious to it or how to do it.
 

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I take it that is something that would be done with the Diablo Tuner and my laptop? I wish there was a way to store this data for retrieval after the run unless I am totally oblivious to it or how to do it.
Yes you must load data viewer from Diablo on to your laptop. I would have thought Josh would have requested Street logs sent to him as part of the tuning process before you hit the track? My car is also remote tuned by him
 

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Discussion Starter · #16 ·
Well it has been a couple of years ago that I received the last tune. I was also down and out for 2020 due to having a widow maker heart attack. I will ask him about it - as I never thought about it. Thanks!
 
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