Time again on my 07 13s
Thread Starter
Instructor
Joined: Jun 2007
Posts: 249
Likes: 0
From: Mission Texas
Time again on my 07 13s
Okay well i went on Friday let the engine cool down for about 45 min. Then waited in line for another 20 . I launched at 1200 rpm but i just cant get in the 12s had traction off dont knoe whats going on .
reaction .463
I1 2.040
I2 5.719
I3 8.666
MPH 83.685
E.T 13.319
reaction .463
I1 2.040
I2 5.719
I3 8.666
MPH 83.685
E.T 13.319
Burning Brakes
Joined: Apr 2007
Posts: 1,084
Likes: 0
From: Santa Clarita California
That MPH matches a low 13 time, so there was none or not much wheel spin. I'm assuming you're using S mode without the paddles, true? Torque Management off the launch can kill the A6, along with the shifts. Looks like TM is your problem to me. Can you spin the tires off a launch or does it just take off without wheel spin (street or strip)?
Thread Starter
Instructor
Joined: Jun 2007
Posts: 249
Likes: 0
From: Mission Texas
That MPH matches a low 13 time, so there was none or not much wheel spin. I'm assuming you're using S mode without the paddles, true? Torque Management off the launch can kill the A6, along with the shifts. Looks like TM is your problem to me. Can you spin the tires off a launch or does it just take off without wheel spin (street or strip)?
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
It stands for Torque Management, if you do a search on it you can read all about it and it's effects on your car's launching and shifting.
Are you using a quality name brand premium fuel only and running a 1/3 of a tank of less and emptying out any unnecessary loose items from your car (to save some weight) before you race?
Are you using a quality name brand premium fuel only and running a 1/3 of a tank of less and emptying out any unnecessary loose items from your car (to save some weight) before you race?
Burning Brakes
Joined: Sep 2005
Posts: 1,066
Likes: 0
From: Canonsburg home of Yenko Chevy (gone but not forgotten) Western PA
You must shift uinto 4th about 50 to 75 yards before the 1/4 mile I'm tacking 6400 rpm well before the 1/4 mark. Unless you have a base suspension with base gear ratio you have to go into 4th with a 6 speed. I do. My times are bad also 13.4 was my best but I did do a 112 mph at the end. I had wheel hop and traction issues and had to back off on the throttle.
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Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
Hm...everything about the run is slow for what it should be doing. I'd have to see what you were doing to really give you a better diagnosis of a problem most likely.
What is the altitude of the track you race at? and what was the weather like?
A better question....what are other LS2 corvettes that are stock running at that track?
What is the altitude of the track you race at? and what was the weather like?
A better question....what are other LS2 corvettes that are stock running at that track?
Burning Brakes
Joined: Jul 2006
Posts: 1,230
Likes: 0
From: Sulphur LA
I tried my 07 a6 Z51 saturday....exact same results.....13.3@107
I only made two passes before the weather turned bad....the humidity was horrible and about 78 degrees---pre thunderstorm conditions. Not exactly ideal.
I think that improvement could be made in the 60' area...my car felt sluggish off of the line. leaving work one day I gave it a little more gas than normal to get out into traffic and it threw me back into the seat like a carnival ride!!! the track was a different story though. after thinking about it, At the track I was power braking to 1000-1500 rpm. Leaving work, I was at idle.
I feel like if I could go back to the track and leave off of idle (or close to it) then It would leave harder. It will "flash" the converter and get the car moving quicker.....1.8 60' times should be attainable in stock trim!!
Better weather, more practice, and maybe even some time for the computer to "learn" what we want it to do......things will get a lot faster
I only made two passes before the weather turned bad....the humidity was horrible and about 78 degrees---pre thunderstorm conditions. Not exactly ideal.
I think that improvement could be made in the 60' area...my car felt sluggish off of the line. leaving work one day I gave it a little more gas than normal to get out into traffic and it threw me back into the seat like a carnival ride!!! the track was a different story though. after thinking about it, At the track I was power braking to 1000-1500 rpm. Leaving work, I was at idle.
I feel like if I could go back to the track and leave off of idle (or close to it) then It would leave harder. It will "flash" the converter and get the car moving quicker.....1.8 60' times should be attainable in stock trim!!
Better weather, more practice, and maybe even some time for the computer to "learn" what we want it to do......things will get a lot faster
Melting Slicks
Joined: Oct 2006
Posts: 2,905
Likes: 1
You guys need to PM DennisNJ for some launch techniques for the A6. His advice helped me develop a successful technique for launching my A6 on the stock runflats that got me into the 1.8 60ft territory and deep into 11's (11.4's) on said runflats. Since you guys don't have a tune yet, you have to learn to "drive around " the TM. Or ,better yet, go pay the couple of hundred bucks and get the nasty TM tuned out of your programming, then, and only then can you flash the converter without falling on your face and costing yourself many tenths of a second. Someone made a report with a data logger awhile back , showing that TM pulled up to 14 degrees of timing(about 5HP per degree) for .3-.4 tenths of a second on launch and during shifts on the A6 at WOT, and that was with stock HP. You won't feel the TM while spinning, so if you pull a decent run out of your butt and said..."but , man, I was spinning the whole way"....thats why. A good launch and hook, alond with good traction during shifts equal lots of TM interferance with the stock tune. Good luck, fellas , and LS1/LT1 or Dennis are the go-to guys for this tranny.
Melting Slicks
Joined: Oct 2006
Posts: 2,905
Likes: 1
Race Director
Joined: Jan 2004
Posts: 18,726
Likes: 710
From: Bergen County, NJ
A stock Z51 hits the rev limiter at 104 MPH in 3rd gear.
Thread Starter
Instructor
Joined: Jun 2007
Posts: 249
Likes: 0
From: Mission Texas
Hm...everything about the run is slow for what it should be doing. I'd have to see what you were doing to really give you a better diagnosis of a problem most likely.
What is the altitude of the track you race at? and what was the weather like?
A better question....what are other LS2 corvettes that are stock running at that track?
What is the altitude of the track you race at? and what was the weather like?
A better question....what are other LS2 corvettes that are stock running at that track?
Thread Starter
Instructor
Joined: Jun 2007
Posts: 249
Likes: 0
From: Mission Texas
I tried my 07 a6 Z51 saturday....exact same results.....13.3@107
I only made two passes before the weather turned bad....the humidity was horrible and about 78 degrees---pre thunderstorm conditions. Not exactly ideal.
I think that improvement could be made in the 60' area...my car felt sluggish off of the line. leaving work one day I gave it a little more gas than normal to get out into traffic and it threw me back into the seat like a carnival ride!!! the track was a different story though. after thinking about it, At the track I was power braking to 1000-1500 rpm. Leaving work, I was at idle.
I feel like if I could go back to the track and leave off of idle (or close to it) then It would leave harder. It will "flash" the converter and get the car moving quicker.....1.8 60' times should be attainable in stock trim!!
Better weather, more practice, and maybe even some time for the computer to "learn" what we want it to do......things will get a lot faster
I only made two passes before the weather turned bad....the humidity was horrible and about 78 degrees---pre thunderstorm conditions. Not exactly ideal.
I think that improvement could be made in the 60' area...my car felt sluggish off of the line. leaving work one day I gave it a little more gas than normal to get out into traffic and it threw me back into the seat like a carnival ride!!! the track was a different story though. after thinking about it, At the track I was power braking to 1000-1500 rpm. Leaving work, I was at idle.
I feel like if I could go back to the track and leave off of idle (or close to it) then It would leave harder. It will "flash" the converter and get the car moving quicker.....1.8 60' times should be attainable in stock trim!!
Better weather, more practice, and maybe even some time for the computer to "learn" what we want it to do......things will get a lot faster
YEah jogar i sent you a pm also.
Thanks for everybodys info i really appreciate it. I really do thanks
Last edited by CHEVY 23; Nov 26, 2007 at 02:13 AM.
Thread Starter
Instructor
Joined: Jun 2007
Posts: 249
Likes: 0
From: Mission Texas
heres a VID
http://edinburgracetrack.com/videos.html
Theres a vid i didnt knoe i came out till yesterday i come out in 3min and 20 sec. I race a yellow camaro. Umm i dont think i did so good check it out. CLick on 11-02-07 race track 1st column 2nd to last
Theres a vid i didnt knoe i came out till yesterday i come out in 3min and 20 sec. I race a yellow camaro. Umm i dont think i did so good check it out. CLick on 11-02-07 race track 1st column 2nd to last