Racing From a Roll
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Joined: Sep 2008
Posts: 416
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nascar
Racing From a Roll
Hello,
I was wondering if there is any difference between just flooring the pedal to kickdown and holding the shift paddle to get into the lowest gear when racing from a roll.
I've heard some people saying to hold the paddle and it'll choose the optimum gear for the speed you are going, but then I've heard people say to go to the lowest gear possible.
Also, sometimes it seems like when I ease into the throttle when the car is in D it feels faster then when I just push down the pedal all the way.
Sometimes when I am completely off the throttle and then go WOT, the RPMs just climb w/o downshifting. However, if I ease onto the pedal it will downshift. Normal? I have done the "sneaky ecu reset" also.
btw, I'm also using a sprint booster.
Thanks
I was wondering if there is any difference between just flooring the pedal to kickdown and holding the shift paddle to get into the lowest gear when racing from a roll.
I've heard some people saying to hold the paddle and it'll choose the optimum gear for the speed you are going, but then I've heard people say to go to the lowest gear possible.
Also, sometimes it seems like when I ease into the throttle when the car is in D it feels faster then when I just push down the pedal all the way.
Sometimes when I am completely off the throttle and then go WOT, the RPMs just climb w/o downshifting. However, if I ease onto the pedal it will downshift. Normal? I have done the "sneaky ecu reset" also.
btw, I'm also using a sprint booster.
Thanks
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Super Member
Joined: Jan 2008
Posts: 586
Likes: 2
From: Springfield, Missouri
03' E55 Techtite Grey
Hello,
I was wondering if there is any difference between just flooring the pedal to kickdown and holding the shift paddle to get into the lowest gear when racing from a roll.
I've heard some people saying to hold the paddle and it'll choose the optimum gear for the speed you are going, but then I've heard people say to go to the lowest gear possible.
Also, sometimes it seems like when I ease into the throttle when the car is in D it feels faster then when I just push down the pedal all the way.
Sometimes when I am completely off the throttle and then go WOT, the RPMs just climb w/o downshifting. However, if I ease onto the pedal it will downshift. Normal? I have done the "sneaky ecu reset" also.
btw, I'm also using a sprint booster.
Thanks
I was wondering if there is any difference between just flooring the pedal to kickdown and holding the shift paddle to get into the lowest gear when racing from a roll.
I've heard some people saying to hold the paddle and it'll choose the optimum gear for the speed you are going, but then I've heard people say to go to the lowest gear possible.
Also, sometimes it seems like when I ease into the throttle when the car is in D it feels faster then when I just push down the pedal all the way.
Sometimes when I am completely off the throttle and then go WOT, the RPMs just climb w/o downshifting. However, if I ease onto the pedal it will downshift. Normal? I have done the "sneaky ecu reset" also.
btw, I'm also using a sprint booster.
Thanks
Quote "Also, sometimes it seems like when I ease into the throttle when the car is in D it feels faster then when I just push down the pedal all the way."
The reason I would guess you feel this way is because the peak torque curve is lower. Our cars make mad torque at around 2-2 1/2 K rpm, so down shifting will "feel" slower. Think of torque being a sprint, and horsepower being a marathon. Also you have a Sprint Booster so it feels like you're giving it half throttle when actually the S.B. is making it almost full throttle. Feels crazy for the driver but the same for the passenger. I still say 12 seconds flat with a S.B. is still a STOCK car....(PERIOD) I'll run 11's WITHOUT THE S.B. and K&N REPLACEMENT filters this spring!
Last edited by NSX2NV; Jan 25, 2009 at 06:23 AM.
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Member
Joined: Feb 2007
Posts: 107
Likes: 0
From: Atlanta, GA
2003 SL55, 1999 Lexus LS400
Quote "Also, sometimes it seems like when I ease into the throttle when the car is in D it feels faster then when I just push down the pedal all the way."
The reason I would guess you feel this way is because the peak torque curve is lower. Our cars make mad torque at around 2-2 1/2 K rpm, so down shifting will "feel" slower. Think of torque being a sprint, and horsepower being a marathon. Also you have a Sprint Booster so it feels like you're giving it half throttle when actually the S.B. is making it almost full throttle. Feels crazy for the driver but the same for the passenger. I still say 12 seconds flat with a S.B. is still a STOCK car....(PERIOD) I'll run 11's WITHOUT THE S.B. and K&N REPLACEMENT filters this spring!
The reason I would guess you feel this way is because the peak torque curve is lower. Our cars make mad torque at around 2-2 1/2 K rpm, so down shifting will "feel" slower. Think of torque being a sprint, and horsepower being a marathon. Also you have a Sprint Booster so it feels like you're giving it half throttle when actually the S.B. is making it almost full throttle. Feels crazy for the driver but the same for the passenger. I still say 12 seconds flat with a S.B. is still a STOCK car....(PERIOD) I'll run 11's WITHOUT THE S.B. and K&N REPLACEMENT filters this spring!
Yes, with these being torquey engines down low, they don't feel the same as something that revs high. One example is with two different sport bikes I had... one being a 599cc inline 4 cyl, which revved to 13k rpm and the power would continue to build and build up until you bounced off of the rev limiter. But my other bike, a 649cc V-twin 2 cyl, had all of it's torque down low, like a muscle car, only revved to 10,500, and anything past 7500-8000 rpm, the engine would run out of breathing ability, feel like less power, and you would feel that you're shifting back into the powerband by upshifting. And that was a sporty high revving twin; most twins are on cruisers opposed to sport bikes. I would say the 55 AMG engine feels more like the latter of the two.
Out Of Control!!
Joined: Feb 2003
Posts: 13,489
Likes: 96
haters crazy
Senior Member
Joined: Mar 2006
Posts: 333
Likes: 0
From: Berkeley, California
2005 E55, Renntech Pulley, ECU
Hmmmm... I agree that it's best to drop into second at any speed short of 55 mph. And then let loose. Not sure I agree that from there it's best to redline and let the transmission shift into third. Feels like the car winds out and feels like having it in third at ~5K rpm, maybe a touch higher makes the car pull harder (using that massive torque). Seat of the pants at least, if feels like the shift slightly lower with our low down torque pulls harder than winding the pants off the motor into third. I'm not expert though.
Am I wrong? Should I just peg it out in M from second and let the trans shift b/c it hits redline?
Thanks,
Skeeter
Am I wrong? Should I just peg it out in M from second and let the trans shift b/c it hits redline?
Thanks,
Skeeter
Super Member
Joined: Jan 2007
Posts: 702
Likes: 0
From: orlando/hk/mainland china
2003 e55
i found this out 2 nights ago on the hwy, me and a buddy's 335i with a crap load of mods...
i downshifted to 2nd gear in S mode... around 40mph, steps on the gas and shifts, when the rpm gets up, itll shift to the next gear by itself even though it already says 3rd gear, and results... i pulled on him strong, 2nd is definitely the strongest gear, you'll get the jump on people
i downshifted to 2nd gear in S mode... around 40mph, steps on the gas and shifts, when the rpm gets up, itll shift to the next gear by itself even though it already says 3rd gear, and results... i pulled on him strong, 2nd is definitely the strongest gear, you'll get the jump on people
