Performance Pages vs. Dragy vs. Dragstrip

[RetiredFirefighter]

Finally got around to making it to the dragstrip.

I only made one run, the 392 pulled hard so I didn't wait around for a second run.

VEHICLE CONDITION
Fuel: 1/4 tank 94 Ultra
Tire Pressure: Stock
Mods: None (100% bone stock / no lightening)
Drive Mode: Track (Launch Mode not used / power brake on launch)

TRACK CONDITIONS
Temp: 49 deg F
Humidity: 42%
Winds: W at 9 mph (East to West track)
Track Altitude: ~600 ft
Density Altitude: GREAT (-258 ft)

Data Comparisons (time slip below)

.....................| Perf. Pages | DRAGSTRIP | Dragy |
60ft .................... 1.97 ...............1.896 .........1.94 ...
330 ft ................. 5.5 ................ 5.383 ........ 5.40 ...
660 ft ................. 8.4 ................ 8.317 ........ 8.33 ...
MPH .................. 84 ................. 83.61 ....... 83.60 ..
1,000 ft ............ 10.9 ............... 10.870 ...... 10.89 ..
Quarter ET ...... 13.1 .............. 13.041 ...... 13.06 ...
Quarter MPH ....104 ............... 104.54 ..... 103.70 ..

 

[Magnified]

Interesting. Thanks for posting that up!

 

[EricG]

Shows just how good our in-car timers really are, the SRT engineers did an amazing job! Does that engineering team even exist anymore?

 

[RetiredFirefighter]

Interesting. Thanks for posting that up!

No problem!

I'm a data nerd and wanted to see how Dodge's PP stacked up against the Dragy and the dragstrip's $20k+ PortaTree timing system.

So in a nut shell, for my runs vs. the dragstrip ...

• Performance Pages ET was ~1/10 sec SLOWER than the dragstrip
• Performance Pages MPH was within 1/2 mph (but of course it only reads to tenths)
• Performance Pages doesn't let you know how level the road is
• Dragy's ET was incredibly accurate, to the hundreths
• Dragy's 1/4 MPH was low by .84 mph
• Dragy's 1/8 MPH was spot on (-.01 mph)
• Dragy validates for slope (said the track was -0.12%, not sure how accurate that is)

I was looking for a 100% bone stock 12.xxx slip, but seeing how the weather conditions were great I'm not sure I can find another 0.042 sec reduction.

Maybe with a bit of a tail wind! Lol

 

[RetiredFirefighter]

Shows just how good our in-car timers really are, the SRT engineers did an amazing job! Does that engineering team even exist anymore?

According to this article (dated 2021):
https://www.thedrive.com/news/39275/dodge-srt-is-not-going-anywhere-despite-reports

"All of the core elements of the SRT performance engineering team have been integrated into our company’s global engineering organization."

Whatever the heck that means ...

 

[EricG]

I think you probably would have run 12.9 with just a couple more passes that day. I don't know what the crowd was like there, sometimes it's just too much waiting, but my car runs better and better as I race it, usually do 3 runs in a row, let it cool/rest, then go again. On the stock tune with the adaptives, it usually takes 3 runs to get it to max out power delivery through the transmission.

 

[RetiredFirefighter]

I think you probably would have run 12.9 with just a couple more passes that day. I don't know what the crowd was like there, sometimes it's just too much waiting, but my car runs better and better as I race it, usually do 3 runs in a row, let it cool/rest, then go again. On the stock tune with the adaptives, it usually takes 3 runs to get it to max out power delivery through the transmission.

Ok, thanks.

I was approaching an hour and a half wait for my next run at the Test/Tune and just called it a day.

 

[EricG]

Ok, thanks.

I was approaching an hour and a half wait for my next run at the Test/Tune and just called it a day.

I'm lucky, our local track always seems to be just busy enough to be fun but not too busy for long waits between runs.

Where do you race at?

 

[RetiredFirefighter]

I race at a track that is populated by 100% Patriotic Americans!🇺🇸