New Best 9.84! Pulled the wheels!
The following 14 users liked this post by avtarv:
360Lemans (10-20-2018),
ACS55 (10-24-2018),
Aerovette (10-20-2018),
ajrothm (10-21-2018),
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and 9 others liked this post.
10-19-2018, 09:50 PM
#2
Team Owner
Member Since: Jun 2005
Location: Northern, VA
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St. Jude Donor '15
"In honor of jpee"
10-19-2018, 10:18 PM
#4
Team Owner
Shows that the Z06 is better than the ZR1 for 1/4 mile work. The extra weight all on the nose made the car harder to push with only 2 wheels.
I'll be doing those 9's soon nice work LOVE the 2019 Z06's!
I'll be doing those 9's soon nice work LOVE the 2019 Z06's!
Last edited by 3 Z06ZR1; 10-19-2018 at 10:20 PM.
10-20-2018, 12:32 AM
#5
Drifting
Thatta boy! I'm going for my first 9 in the morning. Last time out was a 10.09 at 137.5. It sounds like you are leaving at idle? What psi are you running in the rear tires? Are those stockers up front or skinnies? These cars are a riot.
Last edited by 1QUICK Z; 10-20-2018 at 12:32 AM.
The following 2 users liked this post by 1QUICK Z:
ACS55 (10-24-2018),
Harbgrogan (10-20-2018)
10-20-2018, 09:03 AM
#8
Racer
Thread Starter
10-20-2018, 09:21 AM
#9
Do you see a lack of power in 5th, or do your data logs actually show it pulling timing?
Is it only pulling timing or is it doing anything else? See if it also happens to have less boost pressure midway through 5th vs the other gears.
We believe there may be a chain reaction of events at 180kPa. 5th gear speed with the ram air effect causes this boost pressure to be exceeded at the MAP after the screws.
Even once the cars have had the p0106 reflash, we believe they MAY then be opening the BOV butterflies inside the blower at 180kPa. It has also been suggested by NicD that at this 180kPa mark that the main TB closes angle slightly after the reflash.
This is why we are curious about your boost pressures compared to the other gears. I assume you have had the p0106 reflash already correct? (nevermind, just noticed yours is a 19, so it comes already equipped with the update from the factory)
It is hard to spot, as overall, more boost is made in 5th due to the ram air, so you have to have a keen eye to notice the boost actually climbs and then drops and is capped below 180kPa in 5th. The other gears, if boost pressure is graphed, have a nice round shape to them. 5th is capped, flat, and has a dip to it. See if your car does this also.
Thanks
Is it only pulling timing or is it doing anything else? See if it also happens to have less boost pressure midway through 5th vs the other gears.
We believe there may be a chain reaction of events at 180kPa. 5th gear speed with the ram air effect causes this boost pressure to be exceeded at the MAP after the screws.
Even once the cars have had the p0106 reflash, we believe they MAY then be opening the BOV butterflies inside the blower at 180kPa. It has also been suggested by NicD that at this 180kPa mark that the main TB closes angle slightly after the reflash.
This is why we are curious about your boost pressures compared to the other gears. I assume you have had the p0106 reflash already correct? (nevermind, just noticed yours is a 19, so it comes already equipped with the update from the factory)
It is hard to spot, as overall, more boost is made in 5th due to the ram air, so you have to have a keen eye to notice the boost actually climbs and then drops and is capped below 180kPa in 5th. The other gears, if boost pressure is graphed, have a nice round shape to them. 5th is capped, flat, and has a dip to it. See if your car does this also.
Thanks
Last edited by HessViper; 10-20-2018 at 10:54 AM.
10-20-2018, 11:50 AM
#14
Racer
Thread Starter
Do you see a lack of power in 5th, or do your data logs actually show it pulling timing?
Is it only pulling timing or is it doing anything else? See if it also happens to have less boost pressure midway through 5th vs the other gears.
We believe there may be a chain reaction of events at 180kPa. 5th gear speed with the ram air effect causes this boost pressure to be exceeded at the MAP after the screws.
Even once the cars have had the p0106 reflash, we believe they MAY then be opening the BOV butterflies inside the blower at 180kPa. It has also been suggested by NicD that at this 180kPa mark that the main TB closes angle slightly after the reflash.
This is why we are curious about your boost pressures compared to the other gears. I assume you have had the p0106 reflash already correct? (nevermind, just noticed yours is a 19, so it comes already equipped with the update from the factory)
It is hard to spot, as overall, more boost is made in 5th due to the ram air, so you have to have a keen eye to notice the boost actually climbs and then drops and is capped below 180kPa in 5th. The other gears, if boost pressure is graphed, have a nice round shape to them. 5th is capped, flat, and has a dip to it. See if your car does this also.
Thanks
Is it only pulling timing or is it doing anything else? See if it also happens to have less boost pressure midway through 5th vs the other gears.
We believe there may be a chain reaction of events at 180kPa. 5th gear speed with the ram air effect causes this boost pressure to be exceeded at the MAP after the screws.
Even once the cars have had the p0106 reflash, we believe they MAY then be opening the BOV butterflies inside the blower at 180kPa. It has also been suggested by NicD that at this 180kPa mark that the main TB closes angle slightly after the reflash.
This is why we are curious about your boost pressures compared to the other gears. I assume you have had the p0106 reflash already correct? (nevermind, just noticed yours is a 19, so it comes already equipped with the update from the factory)
It is hard to spot, as overall, more boost is made in 5th due to the ram air, so you have to have a keen eye to notice the boost actually climbs and then drops and is capped below 180kPa in 5th. The other gears, if boost pressure is graphed, have a nice round shape to them. 5th is capped, flat, and has a dip to it. See if your car does this also.
Thanks
10-20-2018, 11:57 AM
#15
I agree it is pulling timing. I am trying to find out if it is also limiting boost, and the timing pull is linked to the boost limitation. If you don't have the boost logged, I understand. Keep this in mind next time out, may be some valuable data in the boost logs as well. Compare gear to gear.
As far as the IAT, keep in mind, it may be IAT2 it is watching. People on this forum such as Higgs Boson have a much better understanding of the timing pulls than we do.
As far as the IAT, keep in mind, it may be IAT2 it is watching. People on this forum such as Higgs Boson have a much better understanding of the timing pulls than we do.
10-20-2018, 12:02 PM
#16
Racer
Thread Starter
I agree it is pulling timing. I am trying to find out if it is also limiting boost, and the timing pull is linked to the boost limitation. If you don't have the boost logged, I understand. Keep this in mind next time out, may be some valuable data in the boost logs as well. Compare gear to gear.
As far as the IAT, keep in mind, it may be IAT2 it is watching. People on this forum such as Higgs Boson have a much better understanding of the timing pulls than we do.
As far as the IAT, keep in mind, it may be IAT2 it is watching. People on this forum such as Higgs Boson have a much better understanding of the timing pulls than we do.
Last edited by avtarv; 10-20-2018 at 12:54 PM.
The following users liked this post:
HessViper (10-20-2018)
10-20-2018, 12:04 PM
#17
Racer
Thread Starter
10-20-2018, 12:08 PM
#18
Team Owner
10-20-2018, 12:15 PM
#19
Team Owner
Fuel is another major deal the 94 pump would be nice.
18 percent is a lot of blower speed and it may be losing timing /power in 5th because the Ita's are too high with no meth. That blower is past max!
Last edited by 3 Z06ZR1; 10-20-2018 at 12:27 PM.
10-20-2018, 12:36 PM
#20
Pro
That’s awesome! Great run and congrats! As far as the timing if you research the 18% pulley that’s why most people add meth for cooling to stop the timing from being pulled. Before my Procharger I went with 15% pulley because I didn’t want to add meth and I was barely able to squeak by the 1/4 before it pulled timing. The 18% will definitely create more power and as a side effect heat also. Drop in a single nozzle nozzle meth setup and watch the magic of meth!
