Does anyone No-lift power shift their V.
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 178
Likes: 0
From: Corn Belt, IN.
Does anyone No-lift power shift their V. Does anyone shift thru the gears without lifting off of the throttle? If so do you notice a delay or hesitation after letting the clutch back out?
It almost seems like the throttle actuator closes the throttle when the clutch is depressed, then delays for a split second reopening the butterfly?
I am wondering if anyone has felt his before. Or if not maybe I have a problem elsewhere, Clutch actuator? But it doesn't over-rev or bounce off of the limiter.
It almost seems like the throttle actuator closes the throttle when the clutch is depressed, then delays for a split second reopening the butterfly?
I am wondering if anyone has felt his before. Or if not maybe I have a problem elsewhere, Clutch actuator? But it doesn't over-rev or bounce off of the limiter.
Last edited by CORNER CARVER; Nov 4, 2008 at 08:37 AM.
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 178
Likes: 0
From: Corn Belt, IN.
Its not clutch slip because on the 2-3 shift when it reacts it lifts the whole front of the car and twists it to the left. Its kinda cool but the delay drives me nutz.
Its like the PCM sees the clutch being depressed and with no change in throttle it must back off the opening angle on the throttle body then when it gets a signal from the clutch switch that the clutch is out it goes back to 100% throttle angle.
Its more prevalent on the 2-3 and 3-4 upshifts. 1-2 it doesn't seem to delay.
Its like the PCM sees the clutch being depressed and with no change in throttle it must back off the opening angle on the throttle body then when it gets a signal from the clutch switch that the clutch is out it goes back to 100% throttle angle.
Its more prevalent on the 2-3 and 3-4 upshifts. 1-2 it doesn't seem to delay.
10 Second Club
Joined: Jun 2006
Posts: 49
Likes: 0
From: Raleigh, NC
Does anyone shift thru the gears without lifting off of the throttle? If so do you notice a delay or hesitation after letting the clutch back out?
It almost seems like the throttle actuator closes the throttle when the clutch is depressed, then delays for a split second reopening the butterfly?
I am wondering if anyone has felt his before. Or if not maybe I have a problem elsewhere, Clutch actuator? But it doesn't over-rev or bounce off of the limiter.
It almost seems like the throttle actuator closes the throttle when the clutch is depressed, then delays for a split second reopening the butterfly?
I am wondering if anyone has felt his before. Or if not maybe I have a problem elsewhere, Clutch actuator? But it doesn't over-rev or bounce off of the limiter.
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Launching!
Joined: Aug 2008
Posts: 281
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From: San Diego Ca
agree, and i was never a fan of downrev powershifting. I have yet to see someone who can pull it off effectively as fast as I can clutch, and Ive seen enough transmissions come through vehicle floors that I wont do it even if there was a gun to my head.
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On The Tree
Joined: Jul 2008
Posts: 178
Likes: 0
From: Corn Belt, IN.
After driving it during lunch break and trying the 2-3 power shift I came to the quick conclusion that regardless of the quirks of the CTS-V I really LOVE THIS CAR!
I have longed for this car since it came out and raced in 2004. Its a perfect blend of luxury and badass. So I guess I will have to live with its minor pitfalls.
Launching!
Joined: Aug 2008
Posts: 281
Likes: 0
From: San Diego Ca
There was a delay in the F body slave hydraulic circuit that caused some delay in the bleeding off of the pressure. On a brutal power shift you could slip the clutch because the hydraulic had not let all the fluid out.
On my V I have done a few abusive shifts and noticed a whole lot of drivetrain twist. I think this is the motor mounts squishing around and it feels like a delay.
On my V I have done a few abusive shifts and noticed a whole lot of drivetrain twist. I think this is the motor mounts squishing around and it feels like a delay.
10 Second Club
Joined: Jun 2006
Posts: 49
Likes: 0
From: Raleigh, NC
Here's one of my passes on my ol' C4. In the video in my sig, I shift at 6,500 rpm, never lift and the car doesn't seem to mind a bit. I can guarantee my V would not like it though (wheel hop). You've got to have your shifting nailed to pull it off though.
Here's one of my passes on my old Corvette. I shift at 6,500 rpm, never lift and the car doesn't seem to mind a bit. I can guarantee my V would not like it though (wheel hop). You've got to have your shifting nailed to pull it off though. http://www.youtube.com/watch?v=4nF_Y5SVw-4
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 178
Likes: 0
From: Corn Belt, IN.
I gave my brother a ride the other day and he thought he felt the tires spinning in every gear (through fourth). I dont know if he felt spin but it was definatly moving. We came up on 90 and traffic in a hurry. He was very impressed with the V. I think he was more impressed when I ran it up to 35 and slammed on the brakes!
Honestly your not doing anything but hurting your trans my not using the clutch. It has been proven that you will not gain any e.t. from doing this. Actually in most cases you will run a slower e.t. at the track.
Thread Starter
On The Tree
Joined: Jul 2008
Posts: 178
Likes: 0
From: Corn Belt, IN.
I think that not using the clutch is just a bad idea.
If it were a good idea, the manufacturers would have been all over it along time ago.
Use the clutch, its there for a reason.
If it were a good idea, the manufacturers would have been all over it along time ago.
Use the clutch, its there for a reason.