Part throttle faster than full throttle - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

brn12345 · 10-03-2013, 12:24 AM

I noticed that when I am accellerating using half throttle and then push the pedal to full that the car seems to accelerate slower or bog. Has anyone experienced this?

Hanni_0176 · 10-03-2013, 12:54 AM

I've only noticed full throttle bogging when I go from no/light throttle to full throttle at lower rpm's, and it only lasts for a second. When I go from half throttle to full throttle, there is a notable increase in acceleration for me.

ft_sjo · 10-03-2013, 01:01 AM

Stock or remapped?

Kelbyat07 · 10-03-2013, 01:09 AM

Actually yeah I was thinking about that two days ago. I feel that our car reacts more around 4 rpm.

ck-GT86 · 10-03-2013, 02:54 AM

I noticed the same thing today as I was heading home. Floored it trying to cut around traffic and felt the bog as you've described at full throttle. Slightly annoying, not sure what could fix this.

brn12345 · 10-03-2013, 04:54 AM

Quote:

Originally Posted by ft_sjo

Stock or remapped?

Stock.

ShadowSeraph · 10-03-2013, 09:36 AM

I noticed the bogging on WOT with the stock map too

350matt · 10-03-2013, 09:39 AM

In theory you may get a gain lower in the rev range with a slightly closed throttle as this keeps the gas speed up but as you approach higher rpm the throttle will then need opening up

is this the case?

Kimsey47 · 10-03-2013, 09:58 AM

I believe you're just feeling the torque dip fellas!

mid_life_crisis · 10-03-2013, 10:34 AM

Quote:

Originally Posted by Kimsey47

I believe you're just feeling the torque dip fellas!

Exactly. You only notice it when you stomp on the gas and expect to go somewhere.
This is definitely a driver's car. That doesn't just mean it's fun for a good driver. It also means you have to drive it well to get anything out of it, but it will reward you if you do. When you find yourself in a situation where you anticipate a likely need for sudden acceleration, downshift so you are above the torque dip and ready to go. When you stand on it, the car will take off nicely. Takes a little getting used to cruising along at 50 or 60 with the engine buzzing at 5,000 rpm but it works and it isn't usually for very long.

yohan04 · 10-03-2013, 01:48 PM

Quote:

Originally Posted by Kimsey47

I believe you're just feeling the torque dip fellas!

Could be, but it also could be the fact when we're going WOT, we're expecting the force of acceleration (151lbs of fury!

), so our bodies naturally tense up and bracing ourselves and therefore numbing the sensation.

I always feel like my 450+whp STI is slow when I drive it but, when someone else is driving and I'm in the passenger seat, I'm like

Just a theory

Squishy · 10-03-2013, 02:22 PM

http://www.avoturboworld.com/avoshop...2007-p-58.html

Seems that we all notice this behavior in late model Subaru's and drive by wire systems.

Grip Ronin · 10-03-2013, 05:09 PM

thats most small engines.. goin full throttle at a low rpm is jus flooding the engine with air that it cant use yet, which is also compensated with more fuel

youcantseeme24 · 10-03-2013, 05:36 PM

I noticed a while ago that after about 3/4 peddle there is no diff in power if I floor it. Thats in any gear any rpm. I believe it to be the drive by wire as well.

10-03-2013, 12:24 AM	#1
brn12345 Senior Member Join Date: Oct 2012 Drives: BRZ Location: Bahrain Posts: 254 Thanks: 101 Thanked 137 Times in 63 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Part throttle faster than full throttle I noticed that when I am accellerating using half throttle and then push the pedal to full that the car seems to accelerate slower or bog. Has anyone experienced this?

10-03-2013, 01:09 AM	#4
Kelbyat07 Poor College Kid Join Date: Mar 2013 Drives: ~.~ Location: Chicago Posts: 2,801 Thanks: 246 Thanked 2,182 Times in 1,249 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Actually yeah I was thinking about that two days ago. I feel that our car reacts more around 4 rpm. __________________

10-03-2013, 09:58 AM	#9
Kimsey47 Senior Member Join Date: Mar 2012 Drives: 2016 STI DGM Location: Chattanooga, TN Posts: 1,875 Thanks: 1,189 Thanked 1,460 Times in 662 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	I believe you're just feeling the torque dip fellas! __________________ Subaru STI :

10-03-2013, 05:09 PM	#13
Grip Ronin The Mechanic Join Date: Mar 2012 Drives: Civic Turbo,FR-S Location: NJ Posts: 928 Thanks: 130 Thanked 171 Times in 119 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	thats most small engines.. goin full throttle at a low rpm is jus flooding the engine with air that it cant use yet, which is also compensated with more fuel __________________ IG-Joey_Soul Progress Thread Ported billet 20G

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10-03-2013, 12:54 AM	#2
Hanni_0176 Senior Member Join Date: Sep 2013 Drives: 2013 Scion FR-S 10 Series MT Location: Northeast Ohio Posts: 339 Thanks: 115 Thanked 231 Times in 106 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I've only noticed full throttle bogging when I go from no/light throttle to full throttle at lower rpm's, and it only lasts for a second. When I go from half throttle to full throttle, there is a notable increase in acceleration for me.

10-03-2013, 01:01 AM	#3
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	Stock or remapped?

10-03-2013, 02:54 AM	#5
ck-GT86 Senior Member Join Date: Aug 2013 Drives: '13 Raven FR-S, MT Location: NorCal Posts: 884 Thanks: 788 Thanked 516 Times in 286 Posts Mentioned: 54 Post(s) Tagged: 0 Thread(s)	I noticed the same thing today as I was heading home. Floored it trying to cut around traffic and felt the bog as you've described at full throttle. Slightly annoying, not sure what could fix this.

10-03-2013, 09:39 AM	#8
350matt Senior Member Join Date: Jul 2013 Drives: toyota mr2/ Toyota GT86 Location: UK Posts: 438 Thanks: 3 Thanked 140 Times in 92 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	In theory you may get a gain lower in the rev range with a slightly closed throttle as this keeps the gas speed up but as you approach higher rpm the throttle will then need opening up is this the case?

10-03-2013, 02:22 PM	#12
Squishy Senior Member Join Date: Sep 2012 Drives: 2013 WRB BRZ Location: Katy, TX Posts: 177 Thanks: 22 Thanked 78 Times in 54 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	http://www.avoturboworld.com/avoshop...2007-p-58.html Seems that we all notice this behavior in late model Subaru's and drive by wire systems.

10-03-2013, 05:36 PM	#14
youcantseeme24 Senior Member Join Date: Aug 2012 Drives: 2013 subaru brz Location: United States Posts: 136 Thanks: 102 Thanked 42 Times in 29 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I noticed a while ago that after about 3/4 peddle there is no diff in power if I floor it. Thats in any gear any rpm. I believe it to be the drive by wire as well.

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