Throttle lag
s197 Junkie
Joined: Sep 2006
Posts: 16,088
From: IN
RE: Throttle lag
If you have the "canned" SCT tune it should take care of most of the lag but when you get a B ama or Brenspeed it is no longer there at all. I am not sure you are understanding the throttle lag.
Most commonly in an auto, when you hit the accelerator there is a lag...the car doesnt respond immediately. Very small delay of up to 1 second maybe. With the tune you dont have to push all the way down on the accelerator either. The "drive-by-wire" is not near what the old system wire a physical throttle wire was like. You essentially can push the accelerator down 1/3 the way and get very hard acceleration. The remaining 2/3 might not gain much. Get back to us with some better info on what you are experiencing.
Most commonly in an auto, when you hit the accelerator there is a lag...the car doesnt respond immediately. Very small delay of up to 1 second maybe. With the tune you dont have to push all the way down on the accelerator either. The "drive-by-wire" is not near what the old system wire a physical throttle wire was like. You essentially can push the accelerator down 1/3 the way and get very hard acceleration. The remaining 2/3 might not gain much. Get back to us with some better info on what you are experiencing.
Thread Starter
5th Gear Member
Joined: Sep 2006
Posts: 3,401
RE: Throttle lag
To be honest it was only after seeing references to throttle lag from others which stirred my interest. Being brought up onCarburettors, I'm well used to driving around flat spots and the like so a little throttle lag is almost an old friend to me.
All I can say is that the throttle doesn't seem to have a linear response across it's throw. The part of the movement which suffers the most is the middle of the throw where resposnse is quite numb. It's not a big problem, like I say, it was only after reading that others had already fixed it that made my ears ***** up.
What hammers me more is the software module which keeps the revs elevated for a split second after you let off the gas causing a slow return to idle. I'm still trying to adjust my [sedate] driving style to stop that from giving me some driveline chatter during slow shifting. Hard shifting isn't a worry of course.
All I can say is that the throttle doesn't seem to have a linear response across it's throw. The part of the movement which suffers the most is the middle of the throw where resposnse is quite numb. It's not a big problem, like I say, it was only after reading that others had already fixed it that made my ears ***** up.
What hammers me more is the software module which keeps the revs elevated for a split second after you let off the gas causing a slow return to idle. I'm still trying to adjust my [sedate] driving style to stop that from giving me some driveline chatter during slow shifting. Hard shifting isn't a worry of course.
s197 Junkie
Joined: Sep 2006
Posts: 16,088
From: IN
RE: Throttle lag
OK good to know. The "hanging" rpms is a result of the Spanish oak processor and drive by wire system. The same applies with the non linear response. Like I stated, there is no cable anymore which takes that linear response away. The car is designed to be more gas efficient, hence the hanging rpms. Getting a tune pretty much fixes both of your observed details.
5th Gear Member
Joined: Nov 2005
Posts: 3,235
From:
RE: Throttle lag
ORIGINAL: marcuskeeler
Hi Guys.
Just wondering about the GTthrottle lag I'm reading about on some threads. I have noticed that there exsists a small no-mans-land in the throttle travel, is this what you're referring to?
Is that easily tuned out?
Thanks
Marcus
Hi Guys.
Just wondering about the GTthrottle lag I'm reading about on some threads. I have noticed that there exsists a small no-mans-land in the throttle travel, is this what you're referring to?
Is that easily tuned out?
Thanks
Marcus
J/K
5th Gear Member
Joined: Nov 2005
Posts: 3,235
From:
RE: Throttle lag
ORIGINAL: howarmat
OK good to know. The "hanging" rpms is a result of the Spanish oak processor and drive by wire system. The same applies with the non linear response. Like I stated, there is no cable anymore which takes that linear response away. The car is designed to be more gas efficient, hence the hanging rpms. Getting a tune pretty much fixes both of your observed details.
OK good to know. The "hanging" rpms is a result of the Spanish oak processor and drive by wire system. The same applies with the non linear response. Like I stated, there is no cable anymore which takes that linear response away. The car is designed to be more gas efficient, hence the hanging rpms. Getting a tune pretty much fixes both of your observed details.
3rd Gear Member
Joined: Nov 2006
Posts: 983
From: New Jersey
RE: Throttle lag
ORIGINAL: Drop Top 06
Marcus,
Send a PM to GTNewbie... he'll be happy to tell you about the FRPP pack and how great the warranty is... I never heard him address the throttle lag in any of his posts...
Marcus,
Send a PM to GTNewbie... he'll be happy to tell you about the FRPP pack and how great the warranty is... I never heard him address the throttle lag in any of his posts...
Actually, I did describe the change in throttle-lag in a long "update" thread about 2 months ago (you must have missed it?).
Definitely less lag after the tune (especially dropping down into a passing gear)- but it's not "completely" gone, and I was told that it was impossible to safely eliminate it "totally".
On the other hand, if I don't put it in "drive" but rather in 1st, 2nd & (to a lesser extent) 3rd and stomp on the gas- it literally snaps my head back without any lag whatsoever!
I've also heard that other tunes give the "impression" of no more lag because the pedal response is just different- by which I mean that response is much more immediate till it's about halfway depressed, but rhen there's very little response if you punch it further (read about this on several posts but have no first-hand experience).
Yeah, I sleep like a baby at night with my fully-intact 3 year warranty tucked safely under my pillow.....
I ♥ Acer
Joined: Apr 2007
Posts: 41
From:
RE: Throttle lag
It is under your pillow? Why is that? I got this car and do not keep it (the warranty) under my pillow. Should I do this? Thank you - I am now concerned.
ORIGINAL: GT Newbie
Actually, I did describe the change in throttle-lag in a long "update" thread about 2 months ago (you must have missed it?).
Definitely less lag after the tune (especially dropping down into a passing gear)- but it's not "completely" gone, and I was told that it was impossible to safely eliminate it "totally".
On the other hand, if I don't put it in "drive" but rather in 1st, 2nd & (to a lesser extent) 3rd and stomp on the gas- it literally snaps my head back without any lag whatsoever!
I've also heard that other tunes give the "impression" of no more lag because the pedal response is just different- by which I mean that response is much more immediate till it's about halfway depressed, but rhen there's very little response if you punch it further (read about this on several posts but have no first-hand experience).
Yeah, I sleep like a baby at night with my fully-intact 3 year warranty tucked safely under my pillow.....
ORIGINAL: Drop Top 06
Marcus,
Send a PM to GTNewbie... he'll be happy to tell you about the FRPP pack and how great the warranty is... I never heard him address the throttle lag in any of his posts...
Marcus,
Send a PM to GTNewbie... he'll be happy to tell you about the FRPP pack and how great the warranty is... I never heard him address the throttle lag in any of his posts...
Actually, I did describe the change in throttle-lag in a long "update" thread about 2 months ago (you must have missed it?).
Definitely less lag after the tune (especially dropping down into a passing gear)- but it's not "completely" gone, and I was told that it was impossible to safely eliminate it "totally".
On the other hand, if I don't put it in "drive" but rather in 1st, 2nd & (to a lesser extent) 3rd and stomp on the gas- it literally snaps my head back without any lag whatsoever!
I've also heard that other tunes give the "impression" of no more lag because the pedal response is just different- by which I mean that response is much more immediate till it's about halfway depressed, but rhen there's very little response if you punch it further (read about this on several posts but have no first-hand experience).
Yeah, I sleep like a baby at night with my fully-intact 3 year warranty tucked safely under my pillow.....
