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      02-01-2017, 02:49 AM   #111
Beedub
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for reference!!

2.0 – Renault R25 F1 car (800+ HP / 1,300 lb curb weight)
3.5 – Hayabusa Turbo (316 HP)
4.2 – Yamaha R1
4.3 – Suzuki GSXR-1000
4.5 – Kawasaki ZX-14
4.6 - Hayabusa (stock)
4.6 – Honda CBR 1000 RR
4.8 – Veyron
5.0 – Ducati 1098 S
5.3 – Koenigsegg CCX
5.6 – Suzuki GSXR 750
5.6 – Sportec SPR-1
5.7 – Koenigsegg CCR
5.8 – Mosler MT900 GTR
6.1 - Mclaren F1
6.2 - Pagani Zonda F
6.2 – Honda CBR 600 RR
6.4 - RUF RT-12
6.4 - Carrera GT
6.5 – Pagani Zonda R
6.5 – Kawasaki ZX6-R
6.7 - Enzo
6.8 - GTB 599
6.8 – CBR 1100XX
7.2 - SLR
7.8 - Murci LP640
7.9 - C6 Z06
8.0 - Ford GT
8.4 - 997TT
8.4 - F430
8.4 - 996 GT2
8.6 - M6
8.7 - SL65 AMG
8.8 - Gallardo Superleggera
8.8 - M5
8.9 - S65 AMG
9.0 - 996TT X50/Turbo 'S'
9.1 - Gallardo SE
9.7 - 996TT- 9.7
10.0 - E55 AMG
10.2 - 996 GT3
10.2- Viper SRT-10
10.5 - E63 AMG
10.8 - 993TT
11.2 - AM Vanquish S
11.2 - Audi RS-4 (2007)
11.3 - Audi RS-6
11.6 - SLK-55 “Black” series
11.8 - Bentley Continental GT
12.0 - AM Vantage (2007)
12.4 - E46 M3
13.8 - Jeep SRT-8
14.7 - Cayenne TT (450 HP)
14.9 - EVO IV
16.4 - Supra TT (1995)
16.6 - WRX STi
17.1 - 350Z Coupe (‘06
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      02-01-2017, 09:37 AM   #112
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Quote:
Originally Posted by GuidoK View Post
Quote:
Originally Posted by Nikitas_Z4mcoupe View Post

Video below........
100-200kph in about 7 sec...
Thats really fast. (an m4 does it in ~9,5sec)
Have you ever tried to measure it with a 10hz gps mouse to get an accurate reading?
That would be interesting. A lot of people focus on 0-100kph (or 0-60mph) but that has become totally irrelevant as cars get so much power that awd is essential to get a fast time in that range in real world applications.
I have a very similar set up , although my track aero will slow it down . I will run my 20hz Vbox and get 100-200km/hr and 60-130mph on my a
zero slope testing road so no doubts about being downhill or actual gps speed . Using videos for time to speed is horrible for multiple reasons including speedometer error . With my gearing and stiff track suspension no point trying to launch it though lol. I may have 2 shifts for both 100-200 km and 60-130 mph because of my short gearing , so that will slow things down . I will say even with the aero I am hitting 3 mph more on the front straight 153mph GPS so she is running strong with the same 525 set up .
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      02-04-2017, 11:37 AM   #113
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Quote:
Originally Posted by gmd2003 View Post
I have a very similar set up , although my track aero will slow it down . I will run my 20hz Vbox and get 100-200km/hr and 60-130mph on my a
zero slope testing road so no doubts about being downhill or actual gps speed . Using videos for time to speed is horrible for multiple reasons including speedometer error . With my gearing and stiff track suspension no point trying to launch it though lol. I may have 2 shifts for both 100-200 km and 60-130 mph because of my short gearing , so that will slow things down . I will say even with the aero I am hitting 3 mph more on the front straight 153mph GPS so she is running strong with the same 525 set up .
George you are right, for sure it’s not that accurate to do it with a stopwatch but it gives you a good indication what to expect if you do it on the same exact location and same conditions and of course not on a downhill!!! . Please take your readings and post the results, your car is a beast!!!!!!
Due to my gearing (3.91) I just have to change only one gear which definitely minimizes the possible error and makes it more consistent.
This particular video was taken with a passenger 85kg and half a tank of fuel.
Next days I will borrow a V-box from a friend and post the results, so we will know the exact 100-200km timing not having any doubts.

Today I had the chance to visit a local tuning shop owned by a good friend and we took the car out for some data logging on the streets.
AFR was 12.1 to 12.2 on the limiter with 2nd, 3rd and 4th gear and timing was maximized at 25 degrees.
My friend was amazed from how well the car has been tuned and how consistent was the AFR making almost a straight line.
ESS did an excellent job. Well done guys.
Below a picture from the data logging.



I have already asked him to provide me with all the data in detail for further discussion......
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      02-04-2017, 11:54 AM   #114
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Quote:
Originally Posted by Beedub View Post
for reference!!

2.0 – Renault R25 F1 car (800+ HP / 1,300 lb curb weight)
3.5 – Hayabusa Turbo (316 HP)
4.2 – Yamaha R1
4.3 – Suzuki GSXR-1000
4.5 – Kawasaki ZX-14
4.6 - Hayabusa (stock)
4.6 – Honda CBR 1000 RR
4.8 – Veyron
5.0 – Ducati 1098 S
5.3 – Koenigsegg CCX
5.6 – Suzuki GSXR 750
5.6 – Sportec SPR-1
5.7 – Koenigsegg CCR
5.8 – Mosler MT900 GTR
6.1 - Mclaren F1
6.2 - Pagani Zonda F
6.2 – Honda CBR 600 RR
6.4 - RUF RT-12
6.4 - Carrera GT
6.5 – Pagani Zonda R
6.5 – Kawasaki ZX6-R
6.7 - Enzo
6.8 - GTB 599
6.8 – CBR 1100XX
7.2 - SLR
7.8 - Murci LP640
7.9 - C6 Z06
8.0 - Ford GT
8.4 - 997TT
8.4 - F430
8.4 - 996 GT2
8.6 - M6
8.7 - SL65 AMG
8.8 - Gallardo Superleggera
8.8 - M5
8.9 - S65 AMG
9.0 - 996TT X50/Turbo 'S'
9.1 - Gallardo SE
9.7 - 996TT- 9.7
10.0 - E55 AMG
10.2 - 996 GT3
10.2- Viper SRT-10
10.5 - E63 AMG
10.8 - 993TT
11.2 - AM Vanquish S
11.2 - Audi RS-4 (2007)
11.3 - Audi RS-6
11.6 - SLK-55 “Black” series
11.8 - Bentley Continental GT
12.0 - AM Vantage (2007)
12.4 - E46 M3
13.8 - Jeep SRT-8
14.7 - Cayenne TT (450 HP)
14.9 - EVO IV
16.4 - Supra TT (1995)
16.6 - WRX STi
17.1 - 350Z Coupe (‘06

Byron, from my previous race with the M5E60 which has 8.8sec from the above chart it looks like we had a sec difference and that was when I was running the car catted. The distance between the cars was really big . We did several pull from various speeds and gears. At each gear the coupe was pulling couple of cars away. Really there was no comparison at all.
Anyway V-box will short out everything.......



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      02-04-2017, 11:58 AM   #115
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Quote:
Originally Posted by Nikitas_Z4mcoupe View Post
Quote:
Originally Posted by gmd2003 View Post
I have a very similar set up , although my track aero will slow it down . I will run my 20hz Vbox and get 100-200km/hr and 60-130mph on my a
zero slope testing road so no doubts about being downhill or actual gps speed . Using videos for time to speed is horrible for multiple reasons including speedometer error . With my gearing and stiff track suspension no point trying to launch it though lol. I may have 2 shifts for both 100-200 km and 60-130 mph because of my short gearing , so that will slow things down . I will say even with the aero I am hitting 3 mph more on the front straight 153mph GPS so she is running strong with the same 525 set up .
George you are right, for sure itΒ’s not that accurate to do it with a stopwatch but it gives you a good indication what to expect if you do it on the same exact location and same conditions and of course not on a downhill!!! . Please take your readings and post the results, your car is a beast!!!!!!
Due to my gearing (3.91) I just have to change only one gear which definitely minimizes the possible error and makes it more consistent.
This particular video was taken with a passenger 85kg and half a tank of fuel.
Next days I will borrow a V-box from a friend and post the results, so we will know the exact 100-200km timing not having any doubts.

Today I had the chance to visit a local tuning shop owned by a good friend and we took the car out for some data logging on the streets.
AFR was 12.1 to 12.2 on the limiter with 2nd, 3rd and 4th gear and timing was maximized at 25 degrees.
My friend was amazed from how well the car has been tuned and how consistent was the AFR making almost a straight line.
ESS did an excellent job. Well done guys.
Below a picture from the data logging.

[IMG]http://www.zpost.com/forums/picture....ictureid=63676[/IMG]

I have already asked him to provide me with all the data in detail for further discussion......
Nice !!! To be clear I wasn't implying you were attempting to go downhill but + or - 2% is not perceptible and can make a sig difference . With my different size wheels and tires my speedometer error is huge too ! You have a beautiful car , and it is obviously running fantastic !
Cheers.
George
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      02-04-2017, 12:08 PM   #116
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Quote:
Originally Posted by gmd2003 View Post
Nice !!! To be clear I wasn't implying you were attempting to go downhill but + or - 2% is not perceptible and can make a sig difference . With my different size wheels and tires my speedometer error is huge too ! You have a beautiful car , and it is obviously running fantastic !
Cheers.
George
No issues mate
From what I have read from other forums the acceptable percentage when meassuring 100-200km is +/-3%. I dont know if this is correct...... Any ideas?
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      02-04-2017, 12:17 PM   #117
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Quote:
Originally Posted by Nikitas_Z4mcoupe View Post
Quote:
Originally Posted by gmd2003 View Post
Nice !!! To be clear I wasn't implying you were attempting to go downhill but + or - 2% is not perceptible and can make a sig difference . With my different size wheels and tires my speedometer error is huge too ! You have a beautiful car , and it is obviously running fantastic !
Cheers.
George
No issues mate
From what I have read from other forums the acceptable percentage when meassuring 100-200km is +/-3%. I dont know if this is correct...... Any ideas?
To be "verified " it has to be under 3% , but I try to do close to zero , as the effect can be pretty significant so it makes comparing a -2.8 to a zero almost impossible . Depending on the car that much slope can be half a second or more on a heavier car ! The other thing that makes a sig difference is the conditions ,I.e, temp , barometric pressure and of course altitude relative to sea level . I just switched to 3.81 gears from 4.10's so I can probably do 100-200 the 3-4 shift too , but will need to go to fifth still for 60-130 mph . 4-5 on this car is not quick lol.
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      02-04-2017, 12:49 PM   #118
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Quote:
Originally Posted by gmd2003 View Post
To be "verified " it has to be under 3% , but I try to do close to zero , as the effect can be pretty significant so it makes comparing a -2.8 to a zero almost impossible . Depending on the car that much slope can be half a second or more on a heavier car ! The other thing that makes a sig difference is the conditions ,I.e, temp , barometric pressure and of course altitude relative to sea level . I just switched to 3.81 gears from 4.10's so I can probably do 100-200 the 3-4 shift too , but will need to go to fifth still for 60-130 mph . 4-5 on this car is not quick lol.
Nice, got it!
For our power levels 3.91 is ideal, you can push the car up to the 300km/hr!!!! do you prefer it from 4.10?
3-4 can be really quick, 4-5 is a bit tricky and will add another 0.3-0.5sec to your 60-130readings.... How many miles 4th gear goes? According to my speedometer is reaching 210km/hr at 8160rpm.

Another reading that we did today and I forgot to mention is the intake temperature. With a weather temperature of 19C the car intake was running at 27C and that when being pushed. It seems that the intake is very well designed and not being affected a lot by the engine temperature.....
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      02-04-2017, 01:15 PM   #119
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Quote:
Originally Posted by Nikitas_Z4mcoupe View Post
Quote:
Originally Posted by gmd2003 View Post
To be "verified " it has to be under 3% , but I try to do close to zero , as the effect can be pretty significant so it makes comparing a -2.8 to a zero almost impossible . Depending on the car that much slope can be half a second or more on a heavier car ! The other thing that makes a sig difference is the conditions ,I.e, temp , barometric pressure and of course altitude relative to sea level . I just switched to 3.81 gears from 4.10's so I can probably do 100-200 the 3-4 shift too , but will need to go to fifth still for 60-130 mph . 4-5 on this car is not quick lol.
Nice, got it!
For our power levels 3.91 is ideal, you can push the car up to the 300km/hr!!!! do you prefer it from 4.10?
3-4 can be really quick, 4-5 is a bit tricky and will add another 0.3-0.5sec to your 60-130readings.... How many miles 4th gear goes? According to my speedometer is reaching 210km/hr at 8160rpm.

Another reading that we did today and I forgot to mention is the intake temperature. With a weather temperature of 19C the car intake was running at 27C and that when being pushed. It seems that the intake is very well designed and not being affected a lot by the engine temperature.....
I changed my gearing so I wouldn't run out of 5th gear at my local track , was riding the limiter at 148 mph gps for several seconds at the end of the front straight at my local track and couldn't use 4th in another fast turn . Now I am able to use a lower gear elsewhere and am up to 153mph gps while not hitting the limiter in 5th . I am usually running 285/30/18 ,24.8 diameter . This essentially shortens my gearing so it makes us pretty close . I have huge speedometer error though almost 7 mph at 70mph so I only go by my aim solo data logger for track data . I don't shift at the limiter on the straight ( just before 8k) but it is around 123-24 mph top of 4th gps . Since adding the vented hood my intake air temps run at or under 20 degrees F above ambient during track sessions and water temps are running 210 degrees max on track after a 30 min session . Heck on the street I have trouble getting the water temps out of the 170 F range !
G
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      02-04-2017, 01:28 PM   #120
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Quote:
Originally Posted by Nikitas_Z4mcoupe View Post
4-5 is a bit tricky and will add another 0.3-0.5sec to your 60-130readings....
I think it wont be that much.
Ive timed my shifts, and I can do a 6-3 shift in 0.3sec, and that is including the clutch operation (made a video of it and counted the frames of my leg operating the clutch, it was the only way I could think of to time such a thing).
And that is a considerable 3 gear downshift (with throttleblib obviously), an upshift will be much faster.
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      02-04-2017, 01:34 PM   #121
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please just get me some videos!!! PLEASE!!
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      02-04-2017, 01:48 PM   #122
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Quote:
Originally Posted by gmd2003 View Post
I changed my gearing so I wouldn't run out of 5th gear at my local track , was riding the limiter at 148 mph gps for several seconds at the end of the front straight at my local track and couldn't use 4th in another fast turn . Now I am able to use a lower gear elsewhere and am up to 153mph gps while not hitting the limiter in 5th . I am usually running 285/30/18 ,24.8 diameter . This essentially shortens my gearing so it makes us pretty close . I have huge speedometer error though almost 7 mph at 70mph so I only go by my aim solo data logger for track data . I don't shift at the limiter on the straight ( just before 8k) but it is around 123-24 mph top of 4th gps . Since adding the vented hood my intake air temps run at or under 20 degrees F above ambient during track sessions and water temps are running 210 degrees max on track after a 30 min session . Heck on the street I have trouble getting the water temps out of the 170 F range !
G

Your tyre set up is smaller 0.527'' (13,4mm) diameter wise than mine as I am running 265/30/19 with a dia of 25.26'' (641.6mm).
I have to check with Vbox and GPS what is the actual speeds I am running at, I am really curious...
Water temperature at my car is running at 81C levels and from the day I decatted the car oil temperatures have not crossed 100C.
Vented hood is really working for you!!! nice.......
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      02-04-2017, 01:53 PM   #123
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Quote:
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please just get me some videos!!! PLEASE!!
I will mate...... don’t worry!!
The sound is really nice, totally different from RPIs.. You can listen to the engine, the whistle from the blow off valve and most importantly the straight six.... it's a deeper clearer M-power sound.
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      02-04-2017, 02:03 PM   #124
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Quote:
Originally Posted by GuidoK View Post
I think it wont be that much.
Ive timed my shifts, and I can do a 6-3 shift in 0.3sec, and that is including the clutch operation (made a video of it and counted the frames of my leg operating the clutch, it was the only way I could think of to time such a thing).
And that is a considerable 3 gear downshift (with throttleblib obviously), an upshift will be much faster.
probably you are right, manual shifts will do something like 0.1-0.15sec...
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      02-05-2017, 02:53 AM   #125
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Quote:
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I will mate...... don’t worry!!
The sound is really nice, totally different from RPIs.. You can listen to the engine, the whistle from the blow off valve and most importantly the straight six.... it's a deeper clearer M-power sound.
i need to get shot of the RPI so bad!!!! really had enough of he noise!! can quite stretch the power loops I'm after however.
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      11-01-2017, 03:26 AM   #126
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After long time being hold back due to business and traveling abroad, yesterday finally managed to install Harry's Lap timer application which has the option of measuring 100-200km/hr. I don’t know how accurate this software is but according to various reviews it seems to be close to reality. Being very tempted I decided to take out my Z for some testing.
• Outside temperature was 12C
• Fuel used was 100 Oct (Shell Racing)
• Weight of car 1440kg without driver and 1/2 tank
• Last dyno was 476whp; car now is running without cats probably running a bit stronger
• 3.91 final drive
• 19’’ csl wheels with 235/35/19 & 265/30/19 Michelin SS tires
• Run was recorded at 2% downhill
I know that results are way better than any of my expectations and surely will create lots of arguing and discussions, but I thought to share it with you all.













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