M3 v M4 VBOX Comparison

[dmk08]

I'm not doubting what you ran. I just wish my FBO E92 w/ Evolve tune was close to that fast. lol

[solstice]

Originally Posted by gmd2003

Don't worry about it , people are comparing a -1% slope valid Vbox run to the strip . They are apples to oranges especially a true trap speed which can only happen at the track with the speed avg over the last 60 feet . There are a lot of people who don't understand even simple principles like what trap speed is vs an instaneous Vbox speed at the 1/4 mile much less the effect going downhill even a little bit has on cars performance . I for one appreciate you taking you're time to do this , as it is very telling on a DCT m4's performance and can be compared to other cars Vbox times in similar conditions and slope . Including you're FBO m3 was awesome too . Can't make some people happy, and you can't educate a LOT of people here.

The OP provided the uphill data as well so there is no need to understand the impact of the downhill slope when the numbers are there. The impact here was zero mph and just over .1s. Close to negliable compared to other parameters as driver input since LC wasn't used. Uphill or downhill it was sub 12s and +122 mph.

[turbo8765]

Originally Posted by jc05e46m3

I know someone who just made 560.4whp/585.1wtq yesterday (probably STD, but still up there) on just some different fuel and his JB4 yesterday. Hell, even mine made ~500/500 STD and 480/484 SAE on Friday mid-afternoon in LA on 93/E20 alone. That's just ~80whp less and ~125 more wtq than a respected member's good VT2-625 run 7.15psi, 95 Octane, catless, and Xpipe.

So, by your math all he needs are DR's to run 10's. Let me know how that turns out!

[M6-Coupe]

Originally Posted by dclowd9901

Why's everyone so surprised? Didn't BMW advertise a 3.9 second 0-62 with the DCT? If anything, his numbers are a bit low...

Nope!

[turbo8765]

Originally Posted by M6-Coupe

Nope!

http://www.bmwusa.com/Standard/Conte...fications.aspx

3.9 for the DCT
4.1 for the manual

[MRSSIIM3]

I'll try one with LC soon and post the results of that, including what m drive settings I was using etc

I imagine if I clean up my 0-60 time it'll be around 11.6

[solstice]

Originally Posted by MRSSIIM3

I'll try one with LC soon and post the results of that, including what m drive settings I was using etc

I imagine if I clean up my 0-60 time it'll be around 11.6

Man, you don't think you stirred the pot enough, an 11.6 run will blow the gasket of many here

[jc05e46m3]

Originally Posted by solstice

Man, you don't think you stirred the pot enough, an 11.6 run will blow the gasket of many here

[CanAutM3]

Originally Posted by MRSSIIM3

I'll try one with LC soon and post the results of that, including what m drive settings I was using etc

I imagine if I clean up my 0-60 time it'll be around 11.6

I am eager to see your results with LC.

IIRC, Motortrend found that they got better results without Launch Control. I will try to find and post the video (Ignition) when I am back home. It will be interresting to see if you are able to improve your times with LC.

BTW, thanks for doing this and sharing the info. Some valid questions are asked to better understand the results; thanks for taking the time to answer them .

EDIT: Video added. Starting at 6:35

[FTS]

Originally Posted by turbo8765

http://www.bmwusa.com/Standard/Conte...fications.aspx

3.9 for the DCT
4.1 for the manual

0 to 60, not 62.

[04RC51]

Originally Posted by solstice

Man, you don't think you stirred the pot enough, an 11.6 run will blow the gasket of many here

Yes, many of the E9X'ers will be working overtime on their spreadsheets trying to disprove any such run. And their argument will be that a Z06 only traps at XXX so your M4 couldn't have run at XXX, so there! Some people just cannot accept this car for the beast it is and that's quite sad.

OP, thanks for all the info and another entertaining tinfoil hat coming out party.

[Needsdecaf]

That motor trend video....doesn't look like they activated launch control correctly. Looks like they were in smokey burnout mode.

[jtodd_fl]

Originally Posted by MRSSIIM3

FWIW i only weigh 160 lbs and both cars had 1/4 tank of 91 octane left

Darn you posted your weight already and took away my main snarky response. I guess, all I am left with is this.

Originally Posted by MRSSIIM3

Black Hood Vents, Black Grilles, Black Side Grilles, CF Mirrors, CF Spoiler, Black ///M Emblem

1. Blackness = speed; always has
2. Those CF parts really reduced the weight. It is obviously that.

That is all.

[MRSSIIM3]

Originally Posted by jtodd_fl

Darn you posted your weight already and took away my main snarky response. I guess, all I am left with is this.

1. Blackness = speed; always has
2. Those CF parts really reduced the weight. It is obviously that.

That is all.

[gxman]

What's the record trap speed for the C7 at the strip? Around 121?

[CanAutM3]

Originally Posted by Needsdecaf

That motor trend video....doesn't look like they activated launch control correctly. Looks like they were in smokey burnout mode.

Agreed, seems like they left it in "D".

[e39>all]

Originally Posted by gxman

What's the record trap speed for the C7 at the strip? Around 121?

The c7 "run 11.5s all day long" from what a few forum members on the vs forum spout off nonstop. I guess gm detuned them significantly for the mags

[FogCityM3]

8 flat for FBO M3 to 100? in the tuner GP tests by Sport Auto with some of the most potent tuned and lightweight m3s (e.g. awork-x/weith racing) have achieved 8.6-8.7 secs to 100.

Also, while I don't doubt the v-box data output, which is good for comparison purposes, people are forgetting that mags like C&D and R&T use a 1 ft rollout and test the cars 10 times in each direction and using various launch techniques (that some freely admit would never use on their own cars) and by professionals (some 30 year veterans) who do this all the time. Maybe the fast times seen here are due to auto mags adjusting times for SAE, slope greater than estimated, wind, cold temp etc. Usually the mags get the fastest times for any car unless have drag tires. The results here make sense relatively speaking but in an absolute sense, seem to suggest outlying results for both.

Originally Posted by MRSSIIM3

oh on the m3, sorry. thought you guys meant the m4.

i had the app set up weird at first with what it was logging. so i didnt have a 0-100 mph. but i had a 0-200 meter that trapped 7.79 seconds at 95.5 mph. so thats almost 100mph

0-95.5 mph @ 7.79 on the M3. I estimate this would be a 0-100 of 8 flat

vs.

0-100 mph @ 8.58 on the M4

So it seems like what is happening is because of the poor launch and traction problems all the way up to 3rd gear in the m4, the m3 actually has an edge. but once the m4 finally grips it just pulls away

[MRSSIIM3]

Originally Posted by FogCityM3

8 flat for FBO M3 to 100? in the tuner GP tests by Sport Auto with some of the most potent tuned and lightweight m3s (e.g. awork-x/weith racing) have achieved 8.6-8.7 secs to 100.

Also, while I don't doubt the v-box data output, which is good for comparison purposes, people are forgetting that mags like C&D and R&T use a 1 ft rollout and test the cars 10 times in each direction and using various launch techniques (that some freely admit would never use on their own cars) and by professionals (some 30 year veterans) who do this all the time. Maybe the fast times seen here are due to auto mags adjusting times for SAE, slope greater than estimated, etc. Usually the mags get the fastest times for any car unless have drag tires. The results here make sense relatively speaking but in an absolute sense, seem to suggest outlying results.

Did everything you explain in your post. 1 foot rollout, several runs back and forth...read the other 4 pages lol we've discussed this

[CanAutM3]

Originally Posted by MRSSIIM3

oh on the m3, sorry. thought you guys meant the m4.

i had the app set up weird at first with what it was logging. so i didnt have a 0-100 mph. but i had a 0-200 meter that trapped 7.79 seconds at 95.5 mph. so thats almost 100mph

0-95.5 mph @ 7.79 on the M3. I estimate this would be a 0-100 of 8 flat

vs.

0-100 mph @ 8.58 on the M4

So it seems like what is happening is because of the poor launch and traction problems all the way up to 3rd gear in the m4, the m3 actually has an edge. but once the m4 finally grips it just pulls away

It takes more than 0.21 sec to accelerate from 95.5mph to 100mph. I would estimate more in the 0.6~0.7 sec range. So the 0-100mph of the M3 is more around 8.4~8.5 sec. Not that far off the M4.

[mrkhanna16]

IF YOU GUYS DONT LIKE THE RESULTS CONTACT THE MANUFACTURER OF VBOX NOT MRSSIIM3

Poor guy just wanted to share some info with the community....

[04RC51]

Originally Posted by mrkhanna16

IF YOU GUYS DONT LIKE THE RESULTS CONTACT THE MANUFACTURER OF VBOX NOT MRSSIIM3

Poor guy just wanted to share some info with the community....

They just can't COPE with the results in some cases. It's quite sad how all the threads regarding the performance of the car get dragged down by people who don't have it. Odd how that works.