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-   -   Track run #2: 1/4 mile times w/ Stage III (http://www.bimmerfest.com/forums/showthread.php?t=627321)

RajG 06-15-2012 10:32 AM

Track run #2: 1/4 mile times w/ Stage III
 
1 Attachment(s)
After a chat with Dinan, they recommended that I install the Stage 3 software - which I went ahead and did the same day :thumbup: I initially thought I would only benefit from the software upgrade if I had the Dinan exhaust, but they explained that the upgrade would benefit all cars with better airflow including mine which doesn't have any mufflers. With the Stage 3 software in place, I decided to hit the track again to compare how my car did with my Stage 2 run last month . . .

Compared to the Stage 2 software, I definitely noticed improvements. I consistently hit 110+MPH which was something I was having trouble doing before. The results from my 1st run last month and my most recent run are below. Overall, my times are still weaker than other people that have hit the track with Stage 2/3 which I'm thinking is primarily related to my troubles getting off the line when the light turns green :dunno: What'd you guys think?

Raj

alextremo 06-15-2012 10:38 AM

For some reason your 60' times are really slow compared to other xdrives. Something going on in your launch that's holding you back...

RajG 06-15-2012 11:15 AM

Agreed. I need to take someone more experienced with me to the track to do the times. Any volunteers? This way I can compare that to my times to see if it's something with the car or me. Hopefully it's me and my lack of experience.

Raj

DerStig 06-15-2012 06:43 PM

Quote:

Originally Posted by RajG (Post 6897157)
Agreed. I need to take someone more experienced with me to the track to do the times. Any volunteers? This way I can compare that to my times to see if it's something with the car or me. Hopefully it's me and my lack of experience.

Raj

What track are you going and how are you able to go there whenever you want unless you are very rich? Last I checked you had to pay hefty fees, get your brake fluids and things changed and get insurance, all around $400-500/day (not to mention the membership fees, etc).

Emilner 06-15-2012 07:04 PM

Quote:

Originally Posted by DerStig (Post 6897896)
What track are you going and how are you able to go there whenever you want unless you are very rich? Last I checked you had to pay hefty fees, get your brake fluids and things changed and get insurance, all around $400-500/day (not to mention the membership fees, etc).

Huh?



On Topic- how are you staging the car? Are you power braking, letting the tranny shift or manually shifting, what mode are you in? Your times are 1/2 sec off the mark.

dunderhi 06-15-2012 07:36 PM

If you can get you 60' down to 1.8 sec, you should hit 12.5 secs. I guess you need to creep slowly until the second light and then stop immediately. That will give you a one foot rollout. After that, maybe try power braking. You'll get there. ;)

jnkirk1974 06-16-2012 05:59 PM

For those of us that are dumb (me), how does this translate into 0-60 times? This is my only point reference that I can understand. :)
I've yet to hear stage 3 0-60 times. I have the stage 3 with eisenmann race exhaust.

RajG 06-16-2012 06:27 PM

Quote:

Originally Posted by DerStig (Post 6897896)
What track are you going and how are you able to go there whenever you want unless you are very rich? Last I checked you had to pay hefty fees, get your brake fluids and things changed and get insurance, all around $400-500/day (not to mention the membership fees, etc).

I go to Englishtown raceway in NJ. They charge $28 for 3 runs during their Test and Tune nights on Wednesdays. If they're not too busy, then they'll let you run as many times as you want for the $28. I assume most tracks have similar options.

Raj

RajG 06-16-2012 06:28 PM

Quote:

Originally Posted by dunderhi (Post 6897978)
If you can get you 60' down to 1.8 sec, you should hit 12.5 secs. I guess you need to creep slowly until the second light and then stop immediately. That will give you a one foot rollout. After that, maybe try power braking. You'll get there. ;)

I tried power braking a couple of times, but I jumped too early then let off the gas and then floored it. It's all about timing that's for sure. Hopefully people don't think it's easy cause I don't think it is at all.

Raj

RajG 06-16-2012 06:30 PM

Quote:

Originally Posted by jnkirk1974 (Post 6899361)
For those of us that are dumb (me), how does this translate into 0-60 times? This is my only point reference that I can understand. :)
I've yet to hear stage 3 0-60 times. I have the stage 3 with eisenmann race exhaust.

I have no idea about the 0-60 times. My guess is that it would be in the 4.3 - 4.4 second range, but that's only a guess. I used to have a G-Tech that could measure it, but I can't seem to find it anymore.

Raj

dunderhi 06-16-2012 06:35 PM

Quote:

Originally Posted by jnkirk1974
For those of us that are dumb (me), how does this translate into 0-60 times? This is my only point reference that I can understand.
I've yet to hear stage 3 0-60 times. I have the stage 3 with eisenmann race exhaust.

The online calculators I have seen use the 1/8 time and speed to calculate 0-60. Here's one for example: http://www.wallaceracing.com/0 to 60 MPH I would not claim these are proven scientifically accurate calculators, so judge the following at yourself. ;)

Using this calculator, RajG's best time 8.4000sec@86.75mph yields a 0-60 time of 4.04 secs. Looking at my best Stage 2 time, 8.092sec@87.93 yields a 0-60 time of 3.77 secs and 8.150@86.75 yields 3.9 secs for Stage 3. Using correction factors for weather (thanks Alextremo), there was no difference between the Stage 2 and Stage 3 track times. While I was at Stage 2, I did some Droid phone 0-60 app timings and I got in the 3.9 secs range with a bit more weight in the car, so it's in the ballpark. :thumbup:

jnkirk1974 06-16-2012 06:46 PM

Wow, 3.9 is huge! I'd have been happy with 4.3-4.4 (and I figured that was even optimistic).

dunderhi 06-16-2012 06:53 PM

Quote:

Originally Posted by RajG (Post 6899396)
I go to Englishtown raceway in NJ. They charge $28 for 3 runs during their Test and Tune nights on Wednesdays. If they're not too busy, then they'll let you run as many times as you want for the $28. I assume most tracks have similar options.

Raj

At Capitol Raceway it's $20-25 for all of the runs you can complete. They also rent helmets for $10.

dunderhi 06-16-2012 06:54 PM

Quote:

Originally Posted by jnkirk1974 (Post 6899435)
Wow, 3.9 is huge! I'd have been happy with 4.3-4.4 (and I figured that was web optimistic).

Just to be clear these are AWD drives. I'm not sure what the RWD's are doing.

jnkirk1974 06-16-2012 07:21 PM

I'm RWD.

dunderhi 06-16-2012 07:48 PM

Please take her to the track and let her rip. :drive:

2patron 06-16-2012 07:58 PM

I've been out of the forum for quite some time.
I have stage II
Dunhery, can you really put stage III without the exhaust?
Did you feel the difference ?
Can you give me some info on what it did to the car compare to stage II?
Thanks

dunderhi 06-16-2012 08:58 PM

Quote:

Originally Posted by 2patron (Post 6899557)
I've been out of the forum for quite some time.
I have stage II
Dunhery, can you really put stage III without the exhaust?
Did you feel the difference ?
Can you give me some info on what it did to the car compare to stage II?
Thanks

Welcome back. There are a couple of guys who put on Stage 3 without the exhaust, but I added the Dinan Exhaust when I added Stage 3. I personally don't fell any difference performance-wise, but the sound of the car is much improved in my opinion. It's not very loud, but it reminds me and lets others know the car has a sporting nature.

jjsC6 06-17-2012 05:40 AM

Everyone is talking about 60' times and ET being off. But the thing that would be bothering me is the trap speed. Trap speed does not vary much with the launch, and is a good indicator of the HP being put down. A bone stock 550 should be 108 mph. He is only picking up 2mph or so with 100 more horsepower. 500 hp in that car should be running more like 113 unless it is really hot out and/or high elevation.

It seems to me that the 500 HP M5 (the outgoing model) has run as high as 118 trap speed if memory serves, and 115 plus easily. I realize that car was a little lighter, thats why I'm giving this the benefit of the doubt and saying he should be 113. Maybe even a bit higher.

2patron 06-17-2012 06:41 AM

Quote:

Originally Posted by dunderhi (Post 6899638)
Welcome back. There are a couple of guys who put on Stage 3 without the exhaust, but I added the Dinan Exhaust when I added Stage 3. I personally don't fell any difference performance-wise, but the sound of the car is much improved in my opinion. It's not very loud, but it reminds me and lets others know the car has a sporting nature.

Thanks for the feed back.
Definitely staying with stage II
For some reason I like the silent nature of the car as if it was a stealth fighter
Last week on i95 I gave a sedan m3 e92 a run for his money.
And same day a douche on a S4 on a red light I didn't event felt like I had to push sport mode!
Any info on the performance suspension system? dinan
Can find people that have done it
Usually they do ACS etc..

dunderhi 06-17-2012 08:41 AM

Quote:

Originally Posted by jjsC6 (Post 6899959)
Everyone is talking about 60' times and ET being off. But the thing that would be bothering me is the trap speed. Trap speed does not vary much with the launch, and is a good indicator of the HP being put down. A bone stock 550 should be 108 mph. He is only picking up 2mph or so with 100 more horsepower. 500 hp in that car should be running more like 113 unless it is really hot out and/or high elevation.

It seems to me that the 500 HP M5 (the outgoing model) has run as high as 118 trap speed if memory serves, and 115 plus easily. I realize that car was a little lighter, thats why I'm giving this the benefit of the doubt and saying he should be 113. Maybe even a bit higher.

Using a calculator at Wallace Racing I get the following:
1) M5, 114.6mph and 4137lbs yields 512hp. (data from MotorTrend)
2) 550, 106.9mph and 4354lbs yields 437hp. (data from MotorTrend)
3) RajG, 110.6mph and 4550lbs yields 506hp. (from RajG's data above)
4) Me, 112.9mph and 4760lbs yields 563hp. (my best trap speed & measured weight)

I suspect BMW's stock numbers are in general underestimated, but I believe BMW quotes minimum performance numbers since manufacturing variances will produce engines with different power levels; every engine does not leave the factory with the exact same horsepower.

jjsC6 06-17-2012 09:52 AM

Quote:

Originally Posted by dunderhi (Post 6900123)
Using a calculator at Wallace Racing I get the following:
1) M5, 114.6mph and 4137lbs yields 512hp. (data from MotorTrend)
2) 550, 106.9mph and 4354lbs yields 437hp. (data from MotorTrend)
3) RajG, 110.6mph and 4550lbs yields 506hp. (from RajG's data above)
4) Me, 112.9mph and 4760lbs yields 563hp. (my best trap speed & measured weight)

I suspect BMW's stock numbers are in general underestimated, but I believe BMW quotes minimum performance numbers since manufacturing variances will produce engines with different power levels; every engine does not leave the factory with the exact same horsepower.

Good info. There have been very few tests on the 550, but there have been tests on the 650 and 750 both of which weight at least as much as the 550 (not counting the AWD extra weight). Also, I gave the benefit of the doubt, the stage III package should be 510 hp, right? Also, the 580(?) lb ft of toque with the AWD should make it a monster getting it out of the hole and up to speed, although peak HP is more telling on the trap speed.

Sophisto 06-17-2012 10:32 AM

Sure, you need lots of torque to get the heavy AWD on the roll, something different than the Ninja I suspect.
Only one wheel driven and nicely under 3 seconds from 0 to 60 I presume?

Mbbrewer 06-17-2012 11:52 AM

Those 60ft times are really killing your time. I think you should be able to get that down to 1.6-1.7 with a bit of experience.

RajG 06-18-2012 02:40 PM

Quote:

Originally Posted by Mbbrewer (Post 6900443)
Those 60ft times are really killing your time. I think you should be able to get that down to 1.6-1.7 with a bit of experience.

100% agree. I plan to go twice a month so hopefully my times will improve throughout the summer.

Raj


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