10-04-2018, 09:43 AM | #1 |
Drives: 2017 Corvette Join Date: Jul 2011
Location: Texas
Posts: 258
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How to get throttle body to open fully at launch?
Anybody logged their launch and found the throttle body doesn't open 100% until over 30 mph?
Would like to know the fix. |
10-04-2018, 11:39 AM | #2 |
GPI Sales Consultant
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Interesting... subscribed!
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10-04-2018, 07:08 PM | #3 |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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Yes I have logged many runs. Throttle opens immediately for me.
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Bryan 2018 ZL1 M6
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10-04-2018, 07:14 PM | #4 |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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Here you go
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Bryan 2018 ZL1 M6
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10-04-2018, 07:51 PM | #5 |
Big Crow
Drives: '13 ZL1 Join Date: Mar 2017
Location: California
Posts: 1,531
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^ I'm missing so many pids when I look at your log. Want to share the file that configures those pids?
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10-04-2018, 08:33 PM | #6 |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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Does this help?
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Bryan 2018 ZL1 M6
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10-04-2018, 09:01 PM | #7 |
Drives: 2017 Corvette Join Date: Jul 2011
Location: Texas
Posts: 258
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10-04-2018, 09:10 PM | #8 |
Big Crow
Drives: '13 ZL1 Join Date: Mar 2017
Location: California
Posts: 1,531
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I think I can get that into hptuners
I was just in my hptuners file from my tuner this week and saw he had all Traction Management traction control turned off. I turned back on the ETC portion as I'm afraid of it getting away from me on the street. I have to wonder if traction control could be involved in your complaint. From what little I read the button might not turn off the traction control despite the indication it is off. |
10-04-2018, 09:31 PM | #9 |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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Yes tuned myself. But always has gone full throttle instantly on request. Mine is an M6. Is yours automatic? Automatics have some torque management. The M6 doesn't seem to have any from the factory. Also I drag race mine with just the traction control off, Stabilatrac still on. If you use PTM modes it will pull some throttle trying to maintain traction.
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Bryan 2018 ZL1 M6
Last edited by ZO6 Bryan; 10-04-2018 at 09:55 PM. |
10-05-2018, 06:36 AM | #10 |
Drives: 2017 Corvette Join Date: Jul 2011
Location: Texas
Posts: 258
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Mine is an automatic. I always launch with the traction control button off but have not tried disabling it in my file. I'll give that a try!
On the street with my factory tires I have to start about 20 mph in 4th gear paddle due to lack of traction but I feel it is about the same test as launching from zero. I get the same poor throttle response anyway. |
10-05-2018, 09:50 AM | #11 |
Drives: 2017 Corvette Join Date: Jul 2011
Location: Texas
Posts: 258
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10-05-2018, 05:15 PM | #12 | |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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Quote:
Unzip it. The .XML file is there.
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Bryan 2018 ZL1 M6
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10-06-2018, 06:46 AM | #13 |
Drives: 2017 Corvette Join Date: Jul 2011
Location: Texas
Posts: 258
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That's all it took. See if I can get a log today.
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10-06-2018, 09:55 AM | #14 |
Drives: 2017 Corvette Join Date: Jul 2011
Location: Texas
Posts: 258
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Here's my results. With traction control on and off. Appears to be about the same. Initially 100% throttle then dropping before going 100% again at about 33 mph. And this was in 4th gear paddle starting about 20-22 mph. And as it hits 100% timing advance drops.
The files won't download so if anybody wants to see them post or PM me your email address. Bryan, I added Commanded Throttle Actuator just so I see 100% and compare it to Throttle Position. Don't know why they read differently. |
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