Mike Tries
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« Reply #47 on: March 24, 2026, 07:46:50 PM »
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I ran the car at the drag strip to get more data. I wanted to know if it ran well, or if it was surgey, or if it fell on its face.
I took it to Cecil County for the first Test and Tune of the season. There weren't many cars there, so I got to make 10 passes. I made most of them just like you would make a third gear pull. I just got through 1st and 2nd gears, and into 3rd for a 2,000 to 7,000 RPM pull and, you know what? It ran pretty good. Power closed down a bit at 6,000 RPM, but it wasn't bad. It also felt meh at low RPM.
Back to the RV!
I review the data and I saw that the throttle wasn't opening fully at low RPM and it was closing at 6,000. Why? Well, to follow LDRXN is why! So, I bumped that up a bit up top and down low, and wouldn't you know it... the thing stayed wide freaking open all the way to 6,900 and change when I shifted! It felt great! The car is using the throttle to follow LDRXN now. Cool.
I made a few other little tweaks throughout the day and I was pretty happy. Notably, I was running the car hard way past the finish line. Three reasons: 1. as a courtesy to those behind me, 2. to really run the car as hard as I could including through 4th gear and well into 5th, and 3. because it was just too much freaking fun! I was trapping at 99 MPH and running the car past 120 before braking.
I did a few runs just for fun. No logging. I just ran the thing as hard as I could. Look, it isn't a dragster, and it's AWD, so I have to be careful with the clutch. I never launched it hard at all. It ran in the high 15s at best. With an appropriate launch, it would be a 14 second range car. Maybe high 14s. But that would require a serious clutch, a lot of slip, and a lot of guts to be willing to smoke that equipment two weeks before the first actual race of the season.
The key takeaway is that I think the car is probably darn close to 260 whp. It dynoed at 255, and that was with the throttle shutting it down at 6,000. The power curve looked like it was still trending upward before that. Let's go with what we know from the dyno and just call it a healthy 255 WHP.
I still think I kneecapped it a bit down low. It still doesn't go WOT until 3,000 RPM, but it's improved from where it was when I showed up that day. I already bumped LDRXN up a bit down low for the first race this weekend on TunerPro. I will load that tune, if I think it's worth it, AFTER the first race just in case the laptop gremlins try to shut me down. Or maybe not at all.
Anyway, the thing is quick. 255 whp in a Quattro is probably in the 300-ish crank hp range? Near that at least.
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