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Looks like the Burger tuning JB4 unit with DME tuning, downpipes, intakes and 100 octane is matching an equally prepared F90 M5’s mph in the 1/4. With a better 60ft, it should be a strong race between the two cars coming down to the driver.
'03 E55, Range Rover Sport Supercharged, Ducati 748R
Compared to the front half and even to the 1000ft mark, the trap speed looks like a last second nitrous hit. That mph doesn’t add up. Without a second timeslip to help clear things up I’d suspect a timing/mph error.
Last edited by chiromikey; May 1, 2019 at 02:34 AM.
Compared to the front half and even to the 1000ft mark, the trap speed looks like a last second nitrous hit. That mph doesn’t add up. Without a second timeslip to help clear things up I’d suspect a timing/mph error.
I agree that the 1/8th mph is low compared to the back half. I would expect around 108/109 mph with this terminal speed. I’m sure we’ll see more results soon. DME Tuning is the real deal making world record hyper fast high 8 second McLaren 720’s. Exciting, nevertheless, if true. I vaguely remember a Burger JB4 F90 M5 with 100 octane fuel hitting around 134 mph so even if there was a timing equipment issue, this car would be on par with that one with similar mods. I’ll look that one up and post the IG.
'03 E55, Range Rover Sport Supercharged, Ducati 748R
Originally Posted by Nav
I agree that the 1/8th mph is low compared to the back half. I would expect around 108/109 mph with this terminal speed. I’m sure we’ll see more results soon. DME Tuning is the real deal making world record hyper fast high 8 second McLaren 720’s. Exciting, nevertheless, if true. I vaguely remember a Burger JB4 F90 M5 with 100 octane fuel hitting around 134 mph so even if there was a timing equipment issue, this car would be on par with that one with similar mods. I’ll look that one up and post the IG.
DME has had some issues getting anything out of the W213 platform so if there’s any credit due it probably goes to Burger. However, that timeslip is a perfect street car 10.7 slip in every single measurement except for the terminal mph. Somehow it went from a 10.7 run up to the 1000ft mark then it’s speed jumped 6mph above normal in the last 320ft without improving its time. The trap beams were likely tripped by a bird or debris. It’s not common but it happens and makes more sense than any other explanation.
Last edited by chiromikey; May 1, 2019 at 11:12 AM.
I also never understood why people stack a tune and a JB4. I get it, a JB4 offers really good logging. But here, it is used in conjunction with "look at all of the mods I did to make the car more powerful/faster".
The JB4 spoofs some TMAP sensor data or something, which is usually what people do when they don't want to flash their ECU. If this car has a flash from DME Tuning... why the JB4?
Nit pick: they are throwing intakes into the mix like they actually make a difference in performance? :P
Disclaimer: I had a JB4 on my F10 M5 and that puppy ended up with a blown engine. I can't prove it was the JB4s fault by any means but... she was out of commission for 8 weeks and the repair bill was like $80k (under warranty) because the engine locked in a certain way that affected both the tranny and the diff. Was it just the BMW service center trying to milk everything they can out of a repair? Of course, but still... They had to get the work approved by BMW and they had legitimate reasons for replacing the block/diff/tranny.
Very interesting. Both time slips show huge performance after the 1/8th mile.
This is likely due to the boost limitation in gears 1-3. 4th pulls harder than 1-3 while stock, and an interceptor/piggyback like JB4 adds to baseline values as needed, hence the massive pickup when full boost is allowed.
'03 E55, Range Rover Sport Supercharged, Ducati 748R
Running 132 all day doesn’t back up a near 137mph random trap speed. In fact it helps validate my concern over an error with the speed measurement equipment.
Originally Posted by Qingqing Su
That day I run 132+ all day. If you don't know about jb4, just stop talking. Too many words can only appear to be ignorant. thanks BMS help me.
Running 132 all day doesn’t back up a near 137mph random trap speed. In fact it helps validate my concern over an error with the speed measurement equipment.
Actually both time slips show an equally impressive performance in the last 1/8th of a mile. Without knowing the DA of the track it can be as difficult to compare time slips as it is dyno graphs.
'03 E55, Range Rover Sport Supercharged, Ducati 748R
Originally Posted by G55K
Actually both time slips show an equally impressive performance in the last 1/8th of a mile. Without knowing the DA of the track it can be as difficult to compare time slips as it is dyno graphs.
Nope, the second slip shows a mild improvement in the 1/8 to 1/4 mph. The first shows a massive improvement!. The second slip makes sense for a car increasing boost in the upper gears. The first one defies that explanation, at least when we’re talking about stock turbos.
Nope, the second slip shows a mild improvement in the 1/8 to 1/4 mph. The first shows a massive improvement!. The second slip makes sense for a car increasing boost in the upper gears. The first one defies that explanation, at least when we’re talking about stock turbos.
I must be missing something. The first slip shows an increase of 31 mph and the second slip shows an increase of 29 mph. Both very impressive and very close. Please correct me if I’m wrong.
'03 E55, Range Rover Sport Supercharged, Ducati 748R
Originally Posted by G55K
i just be missing something. The first slip shows an increase of 31 mph and the second slip shows an increase of 29 mph. Both very impressive and very close. Please correct me if I’m wrong.
There is more to it but just going by the delta you’re looking at, it’s closer to a 3mph change. And keep in mind, it happens in the last 320ft because the 1000ft time corresponds to the rest of the measurements of that run. A 3mph increase in that short of a distance is highly questionable. Even the owner stated all his runs were in the 132mph range. Why would anyone not be suspect of a random 136+ mph run that couldn’t be duplicated. 4mph would be like his car just happened to make an extra 80-100hp on that run., and to make it even more weird, that 100hp only affected his mph but not his ET.
Keep in mind I’m not knocking Burger, he’s doing some great things for several platforms and I’d love to see AMGs quit getting spanked by Audi’s and Ms in the 1/4mile. I’m just calling out the obvious in this particular case.
There is more to it but just going by the delta you’re looking at, it’s closer to a 3mph change. And keep in mind, it happens in the last 320ft because the 1000ft time corresponds to the rest of the measurements of that run. A 3mph increase in that short of a distance is highly questionable. Even the owner stated all his runs were in the 132mph range. Why would anyone not be suspect of a random 136+ mph run that couldn’t be duplicated. 4mph would be like his car just happened to make an extra 80-100hp on that run., and to make it even more weird, that 100hp only affected his mph but not his ET.
Keep in mind I’m not knocking Burger, he’s doing some great things for several platforms and I’d love to see AMGs quit getting spanked by Audi’s and Ms in the 1/4mile. I’m just calling out the obvious in this particular case.
Courtesy of Google translate: This kind of stupidity is called bar fine in our Chinese. No matter what other people say, he will come out to bare you. What do you want to do every day when you open w212? How fast do you run, there is a kind of you who send you, stupidly look at you this It’s like a thief, I’m too lazy to explain this with me. It’s a muddy horse, this orphan.
Courtesy of Google translate: This kind of stupidity is called bar fine in our Chinese. No matter what other people say, he will come out to bare you. What do you want to do every day when you open w212? How fast do you run, there is a kind of you who send you, stupidly look at you this It’s like a thief, I’m too lazy to explain this with me. It’s a muddy horse, this orphan.
At 137mph trap speed in the 1/4, trap was ~108mph in the 1/8 in my w212. 93 Octane tune. If there are problems like transmission or tires slipping in the first few gears there can be discrepancy between the 1/8 and a 1/4 trap speed.
136.7 trap on oem turbos is very very high. If it is real it will be reproducible. Instead of putting down the forum members just reproduce the run a few times and people will stop asking you questions.
If anybody questions my trap speeds I have a drawer full of Time Slips I can pull out
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