[sflgator]

Originally Posted by Dannys 335i

I'm the "maybe" we'll see if work allows me to go to the track or not. BTW weather forecast for friday night looks like 68 degrees with a eastward wind of 10 mph. Moroso runs east to west so it'll be a major advantage with the wind to your back. This isn't my ideal track conditions but we'll see if i can even go.
With the advent of the information age some people need to relax about instantaneous information.

Go For It, Danny!!! I hope you can make it, and then post up your results here. Apparently, the natives are getting restless. Thanks, man.

[radgator1]

Originally Posted by bnj

You would, but ask yourself "why". Based on your posts you know the appr. time range dependant on launch. You just want to show to those "skeptics" that you were right. Is it worth having that much stress of? 20 Xede owners think its not.

I am not sure I understand your post but obviously everyone (except you maybe ) from Shiv to sflagator, to everyone else on the board is interested in 1/4 mile data from an Xede equipped 335i from an offical dragstrip. I don't think anyone is skeptical about the car making lots more power than stock. We have seen all of the great Dyno's with the consistent results thanks to shiv and all the early adopters, and we owe them all a big :rocks: .

I think everyone also really appreciates sflagator posting his results, but it is obvious that the device is in error since the power/weight simply doesn't jive with the trap speed the unit reported, and that in turn makes one suspicious that the ET could be off significantly as well.

No one would be going to the strip to satisfy some "skeptics" you refer to, they would be going because:
1. it is fun as hell and :
2. We have zero, not one, nada, official results for Xede modded 335i to post on Dragtimes.com.

Of course with time we will have lots of results to look over, and some of us may be a little impatient for that first run but if you are trying to talk folks out of going I would have to say to you, respectfully of course , STFU

[sdiver68]

Originally Posted by radgator1

I am not sure I understand your post but obviously everyone (except you maybe ) from Shiv to sflagator, to everyone else on the board is interested in 1/4 mile data from an Xede equipped 335i from an offical dragstrip. I don't think anyone is skeptical about the car making lots more power than stock. We have seen all of the great Dyno's with the consistent results thanks to shiv and all the early adopters, and we owe them all a big :rocks: .

I think everyone also really appreciates sflagator posting his results

End there and +1

Thanks sflgator and everyone else adding to the collective knowledge of these just released cars.

[Robin_NL]

A Ferrari F430 does 0-124.3mph( 200kmh) in 12 seconds or so with 490BHP.So did the famous F40.
A M5 with 507BHP does 0-124.3mph in 13 seconds or so.
A 9ff T2 Porsche 997 Turbo with 530BHP an 750Nm does it in 11.3(0-124.3mph)
And a 335i xede with 380(?)BHP does 122.someting mph in 12.4s.

Am I drunk?

[sdiver68]

Originally Posted by Robin Hood

A Ferrari F430 does 0-124.3mph( 200kmh) in 12 seconds or so with 490BHP.So did the famous F40.
A M5 with 507BHP does 0-124.3mph in 13 seconds or so.
A 9ff T2 Porsche 997 Turbo with 530BHP an 750Nm does it in 11.3(0-124.3mph)
And a 335i xede with 380(?)BHP does 122.someting mph in 12.4s.

Am I drunk?

We already have established in this thread that the trap speed was off, and the G-Tech trap speed would be more equal to a 500HP car.

Perhaps not drunk but blind?

[sflgator]

Originally Posted by Robin Hood

A Ferrari F430 does 0-124.3mph( 200kmh) in 12 seconds or so with 490BHP.So did the famous F40.
A M5 with 507BHP does 0-124.3mph in 13 seconds or so.
A 9ff T2 Porsche 997 Turbo with 530BHP an 750Nm does it in 11.3(0-124.3mph)
And a 335i xede with 380(?)BHP does 122.someting mph in 12.4s.

Am I drunk?

Not debating the merits or the times of cars like a Ferrari, a Porsche 911 Turbo, or a Corvette Z06, but in the cases of cars like the M5 or Mercedes AMG, etc., you have to take the heavy weight of the car into consideration. Yes, an M5 with a 507BHP (384 lb-ft TQ @ 6100 rpm) V10 does 0-60mph in 4.2 sec. and the 1/4 mi. in 12.5 sec., but it weighs more than 4,050lbs.

An Xede-equipped 335i with approx. 379BHP and 445 lb.-ft. TQ may be able to put down similar numbers as the M5 b/c it weighs ~ 450lb. less and actually has more TQ!

[Robin_NL]

Originally Posted by sflgator

Not debating the merits or the times of cars like a Ferrari, a Porsche 911 Turbo, or a Corvette Z06, but in the cases of cars like the M5 or Mercedes AMG, etc., you have to take the heavy weight of the car into consideration. Yes, an M5 with a 507BHP (384 lb-ft TQ @ 6100 rpm) V10 does 0-60mph in 4.2 sec. and the 1/4 mi. in 12.5 sec., but it weighs more than 4,050lbs.

An Xede-equipped 335i with approx. 379BHP and 445 lb.-ft. TQ may be able to put down similar numbers as the M5 b/c it weighs ~ 450lb. less and actually has more TQ!

OK, but cancel the M5 then.
Another example:
A GT3 997 does 0-200kmh in 13.someting. With 415BHP and 405Nm and 1390kgs and lots of and I mean lots of traction.

A M3 CSL with 360BHP and 1350(?) kgs did 0-200kmh in 15(?) seconds as I recall.

With 380 BHP you can reach 200kmh in about 15/16 seconds(stock 19.something) instead of 12.5 13 seconds in your(my)E90/92 big fat heavy 335i xede.

[bnj]

Originally Posted by radgator1

I am not sure I understand your post but obviously everyone (except you maybe ) from Shiv to sflagator, to everyone else on the board is interested in 1/4 mile data from an Xede equipped 335i from an offical dragstrip. I don't think anyone is skeptical about the car making lots more power than stock. We have seen all of the great Dyno's with the consistent results thanks to shiv and all the early adopters, and we owe them all a big .

I think everyone also really appreciates sflagator posting his results, but it is obvious that the device is in error since the power/weight simply doesn't jive with the trap speed the unit reported, and that in turn makes one suspicious that the ET could be off significantly as well.

I never said I wouldn't be interested in a time slip. I just don't think that people should push heavily Sflgator (and only him) to do that. I'm asking nicely if he or anyone else would have the time it takes, since I am interested in the info myself.

Obviously the interest among the Xede owners have not been high enough for the effort. I'm just speculating about why the motivation to go to a strip has not been high enough so far and saying that we know the G-Tech measures from which we can derive the range that is likely in the strip.

When it comes to the errors, I thought everyone knew them already as it has been discussed already in this thread. However, it seems that it's good to remind ourselves. There is a systematic error (or difference) in the G-Tech and "official" 1/4 mile as you can read from the below.

Originally Posted by catm3

Impressive indeed, but probably a little inflated. The older G-tech isnt quite as good as the newer one.

The trap speed will always be higher on these types of meters because on a true 1/4 mile, you actually trip the mph beam at 1254 feet, 66 feet before the end of the quarter mile. The G-tech takes the speed at 1320 feet. The difference can be significant (5-10+mph). The last car I tested with this same type of meter was about 6 mph faster than actual recorded trap speed. I think 112-117 is realistic for an Xede 335i. Power to weight, 12.44 probably isnt THAT far off. Mid 12 to high 12s are realistic.

Thus, I don't see how you can come into the conclusion that "since the power/weight simply doesn't jive with the trap speed the unit reported, and that in turn makes one suspicious that the ET could be off significantly as well."

There are small unsystematic errors in the G-Tech measurements, but I cannot see that the ET could be off significantly. Somewhat maybe, but not significantly.

I'm saying that one time slip is not the absolute truth either. There is a lot of deviation in the drag times due to external uncontrolled factors, such as temp and humidity which affect the amount of oxygen in a given volume. Differences in the surface of the track and the temps and many other factors affect the grip. Moreover, variation in how well the lauch succeeds is a big factor.

There are a couple of 335i times in the Dragtimes.com and there is a difference of 0.3 seconds. In addition, noticing that an auto and sedan are on top of the pack against what BMW states as official figures just highlights the fact that one time slip is not going to be an absolute truth either.

I repeat, I would like to see a Xede slip time, but thanks - many thanks - to Sflgator, I can live a few weeks/months without them

[bnj]

The weight of a car is a major factor until a highway speed. However, at higher speeds drag becomes the main factor. 335i coupe has a Cd value of 0.3 whereas M3 has 0.33. That's a huge 10% difference. Assuming the same frontal area, we can estimate that 335i with Xede would have higher top speed than M3. (Assuming no speed limiter, which all tuners just remove here in Europe (Shiv needs to localize the product for the market in that sense) )

[07335-06325]

I hope he can get it done so we can finally end all this speculation.

[radgator1]

Originally Posted by bnj

I never said I wouldn't be interested in a time slip. I just don't think that people should push heavily Sflgator (and only him) to do that. I'm asking nicely if he or anyone else would have the time it takes, since I am interested in the info myself.

Obviously the interest among the Xede owners have not been high enough for the effort. I'm just speculating about why the motivation to go to a strip has not been high enough so far and saying that we know the G-Tech measures from which we can derive the range that is likely in the strip.

When it comes to the errors, I thought everyone knew them already as it has been discussed already in this thread. However, it seems that it's good to remind ourselves. There is a systematic error (or difference) in the G-Tech and "official" 1/4 mile as you can read from the below.



Thus, I don't see how you can come into the conclusion that "since the power/weight simply doesn't jive with the trap speed the unit reported, and that in turn makes one suspicious that the ET could be off significantly as well."

There are small unsystematic errors in the G-Tech measurements, but I cannot see that the ET could be off significantly. Somewhat maybe, but not significantly.

I'm saying that one time slip is not the absolute truth either. There is a lot of deviation in the drag times due to external uncontrolled factors, such as temp and humidity which affect the amount of oxygen in a given volume. Differences in the surface of the track and the temps and many other factors affect the grip. Moreover, variation in how well the lauch succeeds is a big factor.

There are a couple of 335i times in the Dragtimes.com and there is a difference of 0.3 seconds. In addition, noticing that an auto and sedan are on top of the pack against what BMW states as official figures just highlights the fact that one time slip is not going to be an absolute truth either.

I repeat, I would like to see a Xede slip time, but thanks - many thanks - to Sflgator, I can live a few weeks/months without them

Good post, I am glad you are on board. I don't know how anyone wouldn't be interested in seeing what one of these babies can do at the strip.

One timeslip wont be the whole story, but it will be one more official result than we have so far and will become the most viewed thread here in short order. Fame and fortune await the brave soul who dares to be first to step up. Well fame anyway

[orionredwing]

A general observation from a XEDE owner....

Seeing the general respones on this thread, and speaking as a XEDE owner, I'm thinking the reason XEDE owners haven't jumped to the strip (besides being so few of us) is because we're extremely happy at our car's 'new' performance and don't need any further justification. We've got the XEDE so we don't need that last reason / push to make ourselves get it.

We've lost that 'impulse buy' type of attitude that made us get the XEDE in the first place, so we don't need to go right NOW. However, I'm sure many of us are excited and will go to the strip SOMEDAY; it's just not a pressing priority and may be this summer, next year, etc.

On the flip side, the rest of the 335i enthusiast community is eagerly awaiting for one of us to get our butts out there because they're excited about the 'potential' and 'possibilities' of the car. I know b4 I got the XEDE, I was also hoping someone would go and get it done already. =) Hopefully someone will soon. =)

Just my insight...

orionredwing

[bnj]

Originally Posted by sflgator

No wheel spin (at least none detected, but then again, I was just "hangin on" ) , even w/ DTC off and starting out in M1.

Are you or anyone of the Xede community experiencing wheel spin on good dry tarmac on flat out straight line acceleration? (Without dropping clutch, if MT)

PS. Thanks Radgator1

[sflgator]

Originally Posted by bnj

Are you or anyone of the Xede community experiencing wheel spin on good dry tarmac on flat out straight line acceleration? (Without dropping clutch, if MT)

PS. Thanks Radgator1

With DTC/DSC on, not in my AT/Step using my paddles; not even if I start out in M1 (which is just so strong and so short). Now, this is from an idle start; no revving or power braking...haven't tried that yet. However, I have seen the Traction Control light come on a few times (mostly on turns), but I'm not sure if that b/c of the extra power, b/c of the road conditions, or a combo of both.

[OpenFlash]

Originally Posted by bnj

Are you or anyone of the Xede community experiencing wheel spin on good dry tarmac on flat out straight line acceleration? (Without dropping clutch, if MT)

PS. Thanks Radgator1

With my 6mt, on some dry surfaces, traction is somewhat of an issue even in second gear. On other dry surfaces, tires break loose in 1st gear roll-ons right around 4000rpm. Throw water or dirt in the mix and what that traction control light start flashing all through 1st and 2nd and maybe a little bit in 3rd. Sounds exciting until you learn that the throttle isn't an on/off switch. In the end, it just takes getting used to the fact that simply "stomping on it" will yield different results than what you were used to. What you'll find is what race car drivers have been doing since there were race cars... apply the throttle smoothly. You can do it quickly. Just make sure you do it smoothly so you don't upset the chassis or "shock" the tires into wheelspin. Steps look nearly identical on the dyno but the torque convertion does seem to take some of the initial "sting" out of the power delivery on the road.

Cheers,
shiv

[Robin_NL]

Originally Posted by bnj

Are you or anyone of the Xede community experiencing wheel spin on good dry tarmac on flat out straight line acceleration? (Without dropping clutch, if MT)

PS. Thanks Radgator1

Yes on dry straight horizontal tarmac I'm wheelspinning a tiny bit in first and from 1st to 2nd a bit as well if I want to launch it the 'best' way possible(not dropping the clutch)I'm a fast-and powershifter(using the clutch for a nanosecond or so). I still have my car stock and it has Michelin Pilot Sports 255/18s at the rear end. Manual tranny.

When (Xede)chiptuned, I expect 'more' tractionproblems. I had a nice time yesterday night going sideways in the rain, but I need a limited slip differential.

Power is nothing without control.

[cobradac]

I see you folks are nibbling at the edges, but not quite there yet. You really need to get serious about this, and get your numbers sorted right to make apples to apples comparisons.

In an effort to assist you in this regard I offer the following links with which you may start to break out your math books, calculators, spreadsheets, charts and graphs one and all and start to have a little more FUN with this. After all this is SERIOUS business.

One link: http://www.smokemup.com/auto_math/ Here you will find some help in adjusting for weather, drag, gearing, HP, Air/fuel, engine building - well you get the idea.

And then here for more on just weather from National Dragster:

http://www.findarticles.com/p/articl...3/ai_n13511120
http://www.findarticles.com/p/articl...3/ai_n13476055

This should get the juices flowing and I look for some very serious efforts here to get on a par with the high level of discussion you will find by your V8 brothers over here:

http://forums.e60.net/index.php?showtopic=21913

http://forums.e60.net/index.php?show...686&hl=weather


Oh, and if you do get addicted to this stuff, don't blame me

[andrew 330i]

i predict a 13.2 - 13.3 run.

i hope to be proven wrong...

[teknochild]

Originally Posted by andrew 330i

i predict a 13.2 - 13.3 run.

i hope to be proven wrong...

ouch so do i

[edgarj]

Originally Posted by bnj

Are you or anyone of the Xede community experiencing wheel spin on good dry tarmac on flat out straight line acceleration? (Without dropping clutch, if MT)

PS. Thanks Radgator1

I'll let you know in five months when I actually get to experience dry pavement Seriously, on the one day that I had good tarmac this week, I was only getting a little slippage in 1st and between on the ist shift. I'm actually pretty impressed w the RTF's in wet and dry conditions as far as traction goes. I'm swapping wheels and tires next week (to 19" M6 reps with eagle F1 GS-D3's, 265 rears), so hopefully that will tame the XEDE when it arrives SOON, wink wink Shiv.

[sflgator]

Originally Posted by andrew 330i

i predict a 13.2 - 13.3 run.

i hope to be proven wrong...

Ha, ha...you 'doubters' are so funny. I guess until you've actually driven a 335i AND an Xede-equipped 335i, you just can't imagine the difference.

I know some who've never driven either (or who've driven a stock 335i) can understand what another 57WHP and 92RWTQ will do to a car that's already very fast; I mean the stock 335i does 0-60mph in ~ 4.8-4.9 sec. and the 1/4 mi. in 13.4 sec...we know this -- this is all confirmed by all the car mag and other tests. Are we ALL in agreement here????

So, even without driving a 335i that "magically" has A LOT more HP and TQ (via the XEDE for example), one could just deduce that it's going to be A LOT faster. An Xede-equipped 335i launches and accelerates with SO MUCH more power from 1,400rpm - 6,000rpm (even past the stock power dropoff of 5,000rpm) with MORE turbo boost (now up to a constant 11-12psi with wastgates fully closed, instead of 7-10psi with wastegates open/closed), that it's an absolute fact that you're going to get to 60mph, 100mph, and cross the 1/4 mi. marker much quicker!!!

So, why are you doubters still saying that it will only shave 0.1 - 0.2 sec. off the 1/4mi. (which is somewhere way far down the street @ ~ 110-115mph)???? Seriously, guys...you're all killin' me!

Shiv...please, I'm begging you -- make arrangements for these 'doubters' to at the very least, take a test drive in an Xede-equipped 335i!!!!

[sflgator]

Originally Posted by teknochild

ouch so do i

Teknochild,

Ok...I'll tell you what I'll do. Let me know when you'll be down a little further South, here in S. FL (tri-county area), and we'll meet so you can go for a spin in my car. Send me a PM and we'll make arrangements; then, you'll see for yourself just what my Xede-equipped 335i can accomplish (at least with your "butt-dyno"). I think you'll be pleasantly surprised, and I bet your posts on the subject will change a bit.