[Alfa Philly]

Some track prep you can’t even walk on it without ending up like a mouse on a glue trap.

Just watched a new vid from Brooks @ DragTimes whereby his shoes got stuck to the track [emoji12][emoji12]




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Brooks is a beast wit that mclaren 720s. Mclaren should just give him a new model for what he has done for them. He’s destroying super cars like they are Prius with the mclaren. I’ll never forget what he did to that corvette. Smh. Pound for pound the best car out. He’s doing 0-60 in 2.4 in a stock mclaren. Insane. Running 9.6s. They owe him a lot.

 

[JohnnyTheBeast]

@moddeR thanks for posting all those Dragy results!

I was a bit disappointed at first, but when you start to compare those numbers with other cars' real-world averages... it's pretty awesome.

We can talk about variation and different track surfaces and whatever else all day, but I know the BMW M2 consistently runs 13.1 to 13.2 quarter mile times on standard asphalt and usually between 12.6 and 12.8 on a drag strip.

Whether or not you lifted before the end of the quarter mile, I'd consider even a 13.4 on the street to be a pretty solid time.
I'd really like to see if you could get it down a few tenths though.

 

[Racer Z]

Yeah - a little disappointed but will keep trying. Did one more run. Same stretch. Got 0-60 down to 4.48 and it recorded a 1/4 mile of 13.44. That being said, I was hard on the brakes (out of road) before it pinged that I had reached the 1/4. At all of 79.71MPH [emoji6]. 1.91 60 feet. I assume that with full acceleration through the 1/4 I would be close to 13 flat. Thoughts?

How are you luanching?
Are power-braking or releasing the brake then slamming the gas?

How are you shifting?
Manual shift or auto?

What about traction?
Any wheel spin?

 

[beaups]

Yeah - a little disappointed but will keep trying. Did one more run. Same stretch. Got 0-60 down to 4.48 and it recorded a 1/4 mile of 13.44. That being said, I was hard on the brakes (out of road) before it pinged that I had reached the 1/4. At all of 79.71MPH [emoji6]. 1.91 60 feet. I assume that with full acceleration through the 1/4 I would be close to 13 flat. Thoughts?

How are you luanching?
Are power-braking or releasing the brake then slamming the gas?

How are you shifting?
Manual shift or auto?

What about traction?
Any wheel spin?

He said he's power braking to 3k. Looking at the G's in his dragy screenshots, doesn't look like much/any traction issues to me.

 

[Alfa Philly]

@moddeR thanks for posting all those Dragy results!

I was a bit disappointed at first, but when you start to compare those numbers with other cars' real-world averages... it's pretty awesome.

We can talk about variation and different track surfaces and whatever else all day, but I know the BMW M2 consistently runs 13.1 to 13.2 quarter mile times on standard asphalt and usually between 12.6 and 12.8 on a drag strip.

Whether or not you lifted before the end of the quarter mile, I'd consider even a 13.4 on the street to be a pretty solid time.
I'd really like to see if you could get it down a few tenths though.

Stock M2 vs Modded TI. Usually hard to compare a modded car to stock. I’m sure the modded M2 would fair pretty well. Still good times for a 2.0.

 

[Psychodo]

Just out of curiosity.. Have you done any stock runs for comparison?

 

[123bjb123]

Maybe something like OBD Fusion /reader or similar would give an accurate time as it measures absolutes- fires from moment of acceleration and then measures time till speed hits 100kmh. Not sat based?

 

[moddeR]

Just out of curiosity.. Have you done any stock runs for comparison?

Unfortunately, no. Maybe P1 in Natural v. P2 in Dynamic on the same stretch of road / same day? Might make for an interesting comparison...


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[moddeR]

Maybe something like OBD Fusion /reader or similar would give an accurate time as it measures absolutes- fires from moment of acceleration and then measures time till speed hits 100kmh. Not sat based?

Good idea! I have this as well. Maybe run both at the same time (since one uses WiFi and the other BT) [emoji106]


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[moddeR]

How are you luanching?

Are power-braking or releasing the brake then slamming the gas?



How are you shifting?

Manual shift or auto?



What about traction?

Any wheel spin?

1. Former
2. Auto
3. Zero traction issues/no slip at all

Any suggestions on the launch to improve times & 60 foot?


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[Dorifto]

Final run of the evening on the same stretch: 0-60 in 4.73 and braking (again) through the 1/4 mile but time dropped to 13.34 with a 2.05 60 foot.


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That 60 foot isnt impressive, i achieved same 60foot time in my open lsd rwd giulia with p1 tune and v1 and exhaust mods, launched on 2.5k rmps and in manual dynamic, though everyting else was much slower, i bet i could have improved over few runs but they didnt let me because i had no helmet..
Shouldnt awd model have much better 60 feet than rwd??
RT. 0.319
60' 2.051
330 5.806
1/8 8.894
Mph 79.88
1000 11.58
Et 13.806
Mph 99.63

 

[moddeR]

launched on 2.5k rmps and in manual dynamic

Were you holding it steady at 2,500 and then just let off the brake? Or did you build to 2,500 and let off when you reached that RPM?

Will keep experimenting with launch techniques on my end...


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[beaups]

Final run of the evening on the same stretch: 0-60 in 4.73 and braking (again) through the 1/4 mile but time dropped to 13.34 with a 2.05 60 foot.


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That 60 foot isnt impressive, i achieved same 60foot time in my open lsd rwd giulia with p1 tune and v1 and exhaust mods, launched on 2.5k rmps and in manual dynamic, though everyting else was much slower, i bet i could have improved over few runs but they didnt let me because i had no helmet..
Shouldnt awd model have much better 60 feet than rwd??
RT. 0.319
60' 2.051
330 5.806
1/8 8.894
Mph 79.88
1000 11.58
Et 13.806
Mph 99.63

A car achieving the same 60ft time on the street that you achieved on a prepped strip *is* impressive.

 

[chaadster]

Maybe something like OBD Fusion /reader or similar would give an accurate time as it measures absolutes- fires from moment of acceleration and then measures time till speed hits 100kmh. Not sat based?

No, those still use GPS, but at your phone’s much slower sampling rate and so are much less accurate.

Whereas Dragy has an onboard accelerometer, OBD devices (Kiwi4 excepted) relie on the phone accelerometer, so the trigger is the same method, but Dragy obviates need to have phone stabilized.

 

[Dorifto]

40 more hp and awd, should make better 60 feet time than less hp rwd car even if its different track, and he said there was no wheel spin

 

[beaups]

40 more hp and awd, should make better 60 feet time than less hp rwd car even if its different track, and he said there was no wheel spin

Heavier, more DT loss, and 40 more peak hp which is only being hit near the end of the 60ft. Probably a little room for improvement, but I don't see any big issue w/the 60ft. Take your 60ft time on the street and you'll see a big gap between his and yours.

 

[Dorifto]

40 more hp and awd, should make better 60 feet time than less hp rwd car even if its different track, and he said there was no wheel spin

Heavier, more DT loss, and 40 more peak hp which is only being hit near the end of the 60ft. Probably a little room for improvement, but I don't see any big issue w/the 60ft. Take your 60ft time on the street and you'll see a big gap between his and yours.

Huge torque difference between p1 and p2, torque is what matters in 60 feet, i agree that i couldnt achieve the 2.05 on regular road right now in this cold with all season tires and 225width. Gimme qv wheels and summer tires and ill make a better 60feet with my rwd on a regular road, just saying

 

[beaups]

Huge torque difference between p1 and p2, torque is what matters in 60 feet, i agree that i couldnt achieve the 2.05 on regular road right now in this cold with all season tires and 225width. Gimme qv wheels and summer tires and ill make a better 60feet with my rwd on a regular road, just saying

I won't start another torque vs hp discussion. I will say I get 1.95ish looking at my times on my QV on the street this past fall, and never felt like I optimized it, so maybe there is some room for improvement.

 

[Alfa Philly]

Huge torque difference between p1 and p2, torque is what matters in 60 feet, i agree that i couldnt achieve the 2.05 on regular road right now in this cold with all season tires and 225width. Gimme qv wheels and summer tires and ill make a better 60feet with my rwd on a regular road, just saying

I won't start another torque vs hp discussion. I will say I get 1.95ish looking at my times on my QV on the street this past fall, and never felt like I optimized it, so maybe there is some room for improvement.

Definite room. 1.6-1.7 is considered pretty good in a QV on track. So to get 1.9 on street is very respectable. Anything under 2 is gonna put you in low 12s with stock. Only way stock to break into 11s is have a 1.7 or better. Of course tuned you may overcome it with trap speed but 1.9 stock on street is not easy. The qv is worse than the Mustang coyote when it comes to wheel hop. Not as loose as the 5.0 or dangerous but it will skip a lot easier. Of course the 5.0 has a million aftermarket parts for cheap. You can take $4k and run 10s in a mustang all day. Take $4k and you get half a exhaust in qv lol. But if they had some aftermarket removable control arm for QV it would def change it’s 1/4 launch considerable. Always jealous of Mclarens launches. RWD and virtually no wheel spin. Alien technology.

 

[Racer Z]

1. Former
2. Auto
3. Zero traction issues/no slip at all

Any suggestions on the launch to improve times & 60 foot?

Drag race isn't my thing really.

First gear in our Giulia is pretty low. I've tried a few performance starts in manual 2nd. I wasn't impressed, but I didn't power brake either. Even if it feels slower, it might actually be faster, one less shift to slow you down.