Throttle limiter???
Thread Starter
Senior Members
Joined: Mar 2005
Posts: 314
Likes: 0
From: SF Bay Area, California
My Ride: 2005 545i, Orient Blue, Black Interior, Sport Package, Satellite
OK, so now that i'm well out of the break-in period and becoming more comfortable with the excessive, over-kill HP in my 545i, I decided to finally try to floor and hold the gas at full throttle from a dead stop over the weekend.
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on? If a wheel was beginning to spin slightly, would this kick-in?
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on? If a wheel was beginning to spin slightly, would this kick-in?
Senior Members
Joined: Jan 2005
Posts: 1,100
Likes: 0
From: South Africa
My Ride: 545i Mystic Blue/Black Leather Type 124 Wheels
Could be traction control, what was the condition of the road like
Did you have a flashing yellow simbol in the instrument cluster ? ( means DSC is working )
Did you have a flashing yellow simbol in the instrument cluster ? ( means DSC is working )
Senior Members
Joined: Jun 2005
Posts: 536
Likes: 0
From: USA, NJ
My Ride: 2007 BMW 550, Sport, Navi, PS, CWP, Sirius
Originally Posted by ZinMe' date='Sep 12 2005, 03:52 PM
OK, so now that i'm well out of the break-in period and becoming more comfortable with the excessive, over-kill HP in my 545i, I decided to finally try to floor and hold the gas at full throttle from a dead stop over the weekend.
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.?
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on?? If a wheel was beginning to spin slightly, would this kick-in?
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.?
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on?? If a wheel was beginning to spin slightly, would this kick-in?
[snapback]169772[/snapback]
1. Unless you put steptronic into the Sport mode the car starts in the 3rd gear.
2. For better acceleration turn off DSC.
Thread Starter
Senior Members
Joined: Mar 2005
Posts: 314
Likes: 0
From: SF Bay Area, California
My Ride: 2005 545i, Orient Blue, Black Interior, Sport Package, Satellite
Originally Posted by E60Speed' date='Sep 12 2005, 12:59 PM
Could be traction control, what was the condition of the road like
Did you have a flashing yellow simbol in the instrument cluster ? ( means DSC is working )
Did you have a flashing yellow simbol in the instrument cluster ? ( means DSC is working )
[snapback]169773[/snapback]
Thread Starter
Senior Members
Joined: Mar 2005
Posts: 314
Likes: 0
From: SF Bay Area, California
My Ride: 2005 545i, Orient Blue, Black Interior, Sport Package, Satellite
Originally Posted by SergeyM' date='Sep 12 2005, 01:00 PM
[quote name='ZinMe' date='Sep 12 2005, 03:52 PM']OK, so now that i'm well out of the break-in period and becoming more comfortable with the excessive, over-kill HP in my 545i, I decided to finally try to floor and hold the gas at full throttle from a dead stop over the weekend.
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.??
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on??? If a wheel was beginning to spin slightly, would this kick-in?
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.??
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on??? If a wheel was beginning to spin slightly, would this kick-in?
[snapback]169772[/snapback]
1. Unless you put steptronic into the Sport mode the car starts in the 3rd gear.
2. For better acceleration turn off DSC.
[snapback]169774[/snapback]
[/quote]I was in sports mode, but I'm surprised-- in non-sports mode it starts in 3rd gear??? Really????
Contributors
Joined: Jun 2004
Posts: 3,374
Likes: 0
From: Netherlands
My Ride: [i][b][u]Since 19 august 2004[/u][/b][/i]: [color=red][b]530i[/b] High Executive[/color], Silvergray with beige interior, Popular wood, Servotronic, Sportssuspension, electric foldable and dimmed mirrors, dimmed interior mirror, pappelmaser braun wood, cupholders, styling 123 18" wheels, Logic 7, Steptronic, alarm class 3, electric sunscreen in the rear and suncreens for sidewindows, Comfort seats, heated seats, Xenon with headlightwashers, Adaptive corner lights ALC, Advanced airconditioning, lightpackage, Nav Pro, 6 cd changer, side airbags rearseats, bluetooth siemens S55, chrome kidneys, gearlever with wood, voice recognition retrofit, front windshield with green band.
Waiting for trunkopener button from Hobi :)
No it doesn't start in 3rd gear. It starts in second gear.
Senior Members
Joined: Aug 2004
Posts: 1,603
Likes: 0
From: SINGAPORE, The Little Red Dot
Originally Posted by ZinMe' date='Sep 13 2005, 05:03 AM
The road was paved, dry, flat, no loose sand/gravel on the surface.? ? I didn't notice the DSC light ... but then again I wasn't looking for it either.
[snapback]169777[/snapback]
Thread Starter
Senior Members
Joined: Mar 2005
Posts: 314
Likes: 0
From: SF Bay Area, California
My Ride: 2005 545i, Orient Blue, Black Interior, Sport Package, Satellite
Originally Posted by Edlee' date='Sep 13 2005, 02:56 AM
[quote name='ZinMe' date='Sep 13 2005, 05:03 AM']The road was paved, dry, flat, no loose sand/gravel on the surface.? ? I didn't notice the DSC light ... but then again I wasn't looking for it either.
[snapback]169777[/snapback]
[snapback]169944[/snapback]
[/quote]Tried again today. This time, however, even though i was in sport mode, I'm not certain that it started in first gear. I was on a very slight downhill grade and wasn't at a complete dead stop-- very slightly rolling. No DSC/DTC light illuminated, I had DSC/DTC on and the transmission was in sport mode. It sped off the line with no hesitation or lag however, it didn't have the same fast rev off the line. On my first attempt, I'm guessing the lag came in in the 1st to 2nd gear shift.
This is tricky stuff. It's hard for me to find many places to test this due to the amount of traffic and it seems like the conditions have to be just so (flat, dead stop in sport mode) to get the transmission to start in 1st gear.... I'll keep trying.
Contributors
Joined: Aug 2005
Posts: 6,554
Likes: 0
From: Austin TX
My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red
Originally Posted by SergeyM' date='Sep 12 2005, 04:00 PM
[quote name='ZinMe' date='Sep 12 2005, 03:52 PM']OK, so now that i'm well out of the break-in period and becoming more comfortable with the excessive, over-kill HP in my 545i, I decided to finally try to floor and hold the gas at full throttle from a dead stop over the weekend.
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.?
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on?? If a wheel was beginning to spin slightly, would this kick-in?
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.?
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on?? If a wheel was beginning to spin slightly, would this kick-in?
[snapback]169772[/snapback]
[snapback]169774[/snapback]
[/quote]"Two things to notice:
1. Unless you put steptronic into the Sport mode the car starts in the 3rd gear."
Mine always starts in 1st in regular mode--I think--no worse than 2nd. I'll check more carefully--could be 2nd as one poster indicates. If so, it steps down quickly to 1st if one desires. The only time mine starts in 3rd is in sport mode after manual shifting has been engaged. It forces itself to downshift to 3rd, and no lower, after manual shifting has been engaged.
"2. For better acceleration turn off DSC."
And, potentially better acceleration is possible with both DSC and DTC off. I usually drive this way if I am not doing curves or am not on a high speed road--freeway or highway. If you turn both off, then don't forget and do something for which you will need saving--because all stability control is off once DTC is turned off.
Thread Starter
Senior Members
Joined: Mar 2005
Posts: 314
Likes: 0
From: SF Bay Area, California
My Ride: 2005 545i, Orient Blue, Black Interior, Sport Package, Satellite
Originally Posted by donv' date='Sep 13 2005, 04:25 PM
[quote name='SergeyM' date='Sep 12 2005, 04:00 PM'][quote name='ZinMe' date='Sep 12 2005, 03:52 PM']OK, so now that i'm well out of the break-in period and becoming more comfortable with the excessive, over-kill HP in my 545i, I decided to finally try to floor and hold the gas at full throttle from a dead stop over the weekend.
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.??
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on??? If a wheel was beginning to spin slightly, would this kick-in?
The engine rev'd up quickly and the car flew off the line, but something seemed to keep the drive train from fully delivering the power to the wheels... the engine stayed rev'd high while the power came on nearly, but not quite, at full force.??
I wouldn't call this a problem, because like I said the car just flew off the line, and I really don't feel like I need to go this fast, ever, but it did feel like there was more HP there that wasn't being fully utilized.
Is this DSC/DTC or some other kind of limiter/control function that is supposed to come on??? If a wheel was beginning to spin slightly, would this kick-in?
[snapback]169772[/snapback]
[snapback]169774[/snapback]
[/quote]"Two things to notice:
1. Unless you put steptronic into the Sport mode the car starts in the 3rd gear."
Mine always starts in 1st in regular mode--I think--no worse than 2nd. I'll check more carefully--could be 2nd as one poster indicates. If so, it steps down quickly to 1st if one desires. The only time mine starts in 3rd is in sport mode after manual shifting has been engaged. It forces itself to downshift to 3rd, and no lower, after manual shifting has been engaged.
"2. For better acceleration turn off DSC."
And, potentially better acceleration is possible with both DSC and DTC off. I usually drive this way if I am not doing curves or am not on a high speed road--freeway or highway. If you turn both off, then don't forget and do something for which you will need saving--because all stability control is off once DTC is turned off.
[snapback]170184[/snapback]
[/quote]I see where to turn DTC off-- where is the DSC disabler?
