poor throttle response - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Djen · 06-18-2013, 06:11 PM

hi could someone help me step by step.. dose someone experience same what I do ?

I just installed CAI and I drive it for half an hour then I disconnect the nagtive battry tinrmal for 20min and then put it on agine I allowed the ECU to reset so the rexults now a Poor acceleration\slow throttle response.. please could someone help me out

Xero-Limit · 06-18-2013, 06:16 PM

throttle will always be a bit sluggish after ECU reset or flash. Give it a gas tank and it should settle. ECU needs to get adjusted to the stepper motor in the throttle plate.

Foobar · 06-18-2013, 06:36 PM

Could try Jeff Perrin's suggestion of turning car on without starting the engine, fully press and release gas pedal 20 times, turn car off, turn on without starting again, press and release 20 times again, then start engine. No more ECU reset dead pedal.

Sent from my Nexus 4 using Tapatalk 2

m.wood0213 · 06-18-2013, 06:46 PM

which CAI did you install. from what i understand all CAI will decrease throttle response because they increase top end power only.

xwd · 06-18-2013, 07:23 PM

Like others said, it has nothing to do with the CAI, it's the ECU reset which is causing the throttle lag.

CamryDS · 06-18-2013, 07:29 PM

Quote:

Originally Posted by Foobar

Could try Jeff Perrin's suggestion of turning car on without starting the engine, fully press and release gas pedal 20 times, turn car off, turn on without starting again, press and release 20 times again, then start engine. No more ECU reset dead pedal.

Sent from my Nexus 4 using Tapatalk 2

does this work? I'm going to try this after work today =) was just rummaging around.

G_Ride · 06-18-2013, 07:31 PM

Quote:

Originally Posted by m.wood0213

which CAI did you install. from what i understand all CAI will decrease throttle response because they increase top end power only.

A CAI may affect the low end power/torque and feel a little more sluggish when the car is trying to move, but as others have said the throttle response is due to resetting the ECU. The computer needs to re-learn.

Kodename47 · 06-19-2013, 04:10 AM

Quote:

Originally Posted by CamryDS

does this work? I'm going to try this after work today =) was just rummaging around.

Yes, but you only need to do it 5 times. I've posted about this before and I do it every time I re-flash.

Pete · 06-19-2013, 12:52 PM

Quote:

Originally Posted by CamryDS

does this work? I'm going to try this after work today =) was just rummaging around.

It works. Jeff Perrin told me about that a few months ago and I do it every time I flash now.

CamryDS · 06-19-2013, 01:23 PM

Quote:

Originally Posted by Pete

It works. Jeff Perrin told me about that a few months ago and I do it every time I flash now.

Thanks, I tried it after work yesterday.
- Car set to ON - step on the peddle 20 times or so (full on and full off)
- Turned the car off - stepped on the peddle 20 times or so (full on and full off)
- Turned the car back to on - repeated step 1
- Started the car completely

There was some improvements. Just wondering is there a guide for this?

Foobar · 06-19-2013, 01:40 PM

Quote:

Originally Posted by CamryDS

Thanks, I tried it after work yesterday.
- Car set to ON - step on the peddle 20 times or so (full on and full off)
- Turned the car off - stepped on the peddle 20 times or so (full on and full off)
- Turned the car back to on - repeated step 1
- Started the car completely

There was some improvements. Just wondering is there a guide for this?

You don't actually need to do the pedal thing (step 2 above). Just turn off the car and turn it back on again before repeating step 1.

I've never seen this published anywhere else but from Pete and a few others who have variations on the theme.

CamryDS · 06-19-2013, 01:45 PM

Quote:

Originally Posted by Foobar

You don't actually need to do the pedal thing (step 2 above). Just turn off the car and turn it back on again before repeating step 1.

I've never seen this published anywhere else but from Pete and a few others who have variations on the theme.

Ahh, thanks for clearing that up -- i'll do that again this afternoon

Kodename47 · 06-19-2013, 06:10 PM

Reset ECU, turn car to accessory. Slowly depress the accelerator 5 times fully to the floor. Turn on car. Its just so the ECU can register 100% pedal movement. That is also why you get dead pedal for a while if you don't. Doing it with the car off is pointless as the ECU isn't powered up.

This works, 20 times is a waste of your energy!

Emyl · 06-09-2014, 09:29 PM

Quote:

Originally Posted by Kodename47

Reset ECU, turn car to accessory. Slowly depress the accelerator 5 times fully to the floor. Turn on car. Its just so the ECU can register 100% pedal movement. That is also why you get dead pedal for a while if you don't. Doing it with the car off is pointless as the ECU isn't powered up.

This works, 20 times is a waste of your energy!

Yizusss!!!! Thanks to this post and Kodename47.
I was going crazy with this lag!... Thanks!

Im happy and relax now.
I thought my car was damaged!

06-18-2013, 06:11 PM	#1
Djen Senior Member Join Date: Jun 2013 Drives: GT86 Location: Kuwait Posts: 127 Thanks: 0 Thanked 5 Times in 4 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	poor throttle response hi could someone help me step by step.. dose someone experience same what I do ? I just installed CAI and I drive it for half an hour then I disconnect the nagtive battry tinrmal for 20min and then put it on agine I allowed the ECU to reset so the rexults now a Poor acceleration\slow throttle response.. please could someone help me out

06-19-2013, 06:10 PM	#13
Kodename47 Senior Member Join Date: Oct 2012 Drives: UK GT86 Location: UK Posts: 3,040 Thanks: 185 Thanked 1,632 Times in 1,113 Posts Mentioned: 156 Post(s) Tagged: 1 Thread(s)	Reset ECU, turn car to accessory. Slowly depress the accelerator 5 times fully to the floor. Turn on car. Its just so the ECU can register 100% pedal movement. That is also why you get dead pedal for a while if you don't. Doing it with the car off is pointless as the ECU isn't powered up. This works, 20 times is a waste of your energy! __________________ .: Stealth 86 :. Abbey Motorsport/K47 Tuned Sprintex 210 Supercharger Kodename 47 DJ: Soundcloud / Instagram / Facebook

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06-18-2013, 06:16 PM	#2
Xero-Limit Join Date: Nov 2012 Drives: JDL Turbo FRS, 335SC BRZ (ret) Location: Lehigh Valley, PA Posts: 938 Thanks: 368 Thanked 1,550 Times in 527 Posts Mentioned: 380 Post(s) Tagged: 6 Thread(s)	throttle will always be a bit sluggish after ECU reset or flash. Give it a gas tank and it should settle. ECU needs to get adjusted to the stepper motor in the throttle plate.

06-18-2013, 07:23 PM	#5
xwd Senior Member Join Date: Feb 2012 Drives: 2013 DGM Subaru BRZ (Subie #9) Location: ATL, US Posts: 2,667 Thanks: 123 Thanked 861 Times in 552 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Like others said, it has nothing to do with the CAI, it's the ECU reset which is causing the throttle lag.

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