K&N drop in filter problem!?!? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

babykwiss · 06-15-2014, 03:15 AM

I just installed a K&N drop in filter last night. I disconnected the battery to reset the ECU. After the reset, I let my car idle for a few mins. Today when I drove the car, I noticed the throttle response was horrible. Was just wondering if it was because I reset the ECU, car heas to relearn everything and throttle response will go back to normal if not a little better than before due to the increased air flow. Was just wondering if anyone else had the same problem with the K&N drop in filter or if I did something wrong.

Luis_GT · 06-15-2014, 03:21 AM

Its cause you reset the ECU

Dr. BRZ · 06-15-2014, 05:46 AM

There was no need for you to reset the ecu for the k&n filter

babykwiss · 06-15-2014, 11:55 AM

Yea i figured for such a small mod I did not need to reset. Any apporximate on how long my throttle response will atleast go back to OEM Spec if nto better?

Bobblehead · 06-15-2014, 01:32 PM

http://www.ft86club.com/forums/showt...ottle+response

That thread should have all the answers you need. Specifically, reply #3.

Stevew8 · 06-15-2014, 01:59 PM

Yea, I had installed k&n on a Volvo, passat, camry and frs and now a cold air intake and I never reset anything. Once you turn the car on and drive it the ecu will readjust on its own..

Sent from my DROID RAZR using Tapatalk

Jolaessss · 06-15-2014, 02:31 PM

Totally normal when resetting the ECU. throttle needs to relearn everything. i would give it a week till everything is back to 100%

babykwiss · 06-15-2014, 02:41 PM

I followed this
"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"

and worked instantly!

Thanks everyone!

06-15-2014, 03:15 AM	#1
babykwiss Senior Member Join Date: Apr 2014 Drives: Scion FRS Location: Toronto Posts: 102 Thanks: 3 Thanked 7 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	K&N drop in filter problem!?!? I just installed a K&N drop in filter last night. I disconnected the battery to reset the ECU. After the reset, I let my car idle for a few mins. Today when I drove the car, I noticed the throttle response was horrible. Was just wondering if it was because I reset the ECU, car heas to relearn everything and throttle response will go back to normal if not a little better than before due to the increased air flow. Was just wondering if anyone else had the same problem with the K&N drop in filter or if I did something wrong.

06-15-2014, 01:32 PM	#5
Bobblehead Senior Member Join Date: Mar 2014 Drives: 2013 BRZ (gone) 2016 Ford Fusion SE Location: Western PA Posts: 602 Thanks: 522 Thanked 494 Times in 223 Posts Mentioned: 1 Post(s) Tagged: 2 Thread(s)	http://www.ft86club.com/forums/showt...ottle+response That thread should have all the answers you need. Specifically, reply #3. __________________

06-15-2014, 01:59 PM	#6
Stevew8 Member Join Date: May 2014 Drives: Scion FR-S 10 #0931 ManT Location: New Jersey Posts: 48 Thanks: 1 Thanked 7 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yea, I had installed k&n on a Volvo, passat, camry and frs and now a cold air intake and I never reset anything. Once you turn the car on and drive it the ecu will readjust on its own.. Sent from my DROID RAZR using Tapatalk __________________ I told everybody, don't worry I drive rear wheel drive in the snow all the time at work, and the car fits 2 kids in the back and my groceries in the trunk are no problem.

06-15-2014, 02:31 PM	#7
Jolaessss Senior Member Join Date: May 2013 Drives: SWP FR-S Location: San Jose, CA Posts: 620 Thanks: 346 Thanked 172 Times in 114 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	Totally normal when resetting the ECU. throttle needs to relearn everything. i would give it a week till everything is back to 100% __________________

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06-15-2014, 03:21 AM	#2
Luis_GT Banned Join Date: Jul 2012 Drives: 2002 BMW 530i, 10 Series FR-S Location: Puerto Rico Posts: 3,404 Thanks: 3,416 Thanked 3,334 Times in 1,754 Posts Mentioned: 60 Post(s) Tagged: 1 Thread(s)	Its cause you reset the ECU

06-15-2014, 11:55 AM	#4
babykwiss Senior Member Join Date: Apr 2014 Drives: Scion FRS Location: Toronto Posts: 102 Thanks: 3 Thanked 7 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yea i figured for such a small mod I did not need to reset. Any apporximate on how long my throttle response will atleast go back to OEM Spec if nto better?

06-15-2014, 02:41 PM	#8
babykwiss Senior Member Join Date: Apr 2014 Drives: Scion FRS Location: Toronto Posts: 102 Thanks: 3 Thanked 7 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I followed this "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" and worked instantly! Thanks everyone!

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