HELP! BRZ 2017 stalls when switching to OL - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Muchikori · 05-26-2018, 07:34 PM

Hi Guys,

I am making some changes onto the Stage1 OTS map and was looking into getting the car switch to Open Loop once it reaches a certain RPM by changing the following tables:

1. CL Delay Maximum Engine Speed
2. CL Delay Engin Speed B Counter Threshold

See picture below (OTS vs Changes):

but the moment the car hits 3500 RPM @ 1st Gear, it bunny hops then stalls.

Can you please advise?

Thanks a lot!

steve99 · 05-27-2018, 06:09 AM

Id probably put those setting back to stock. Not many people change those settings, maybe the def is incorrect or the table function is not properly understood.

If you maf scaling is good then open to closed loop transition should be fine anyway.

Muchikori · 05-27-2018, 07:29 AM

Quote:

Originally Posted by steve99

Id probably put those setting back to stock. Not many people change those settings, maybe the def is incorrect or the table function is not properly understood.

If you maf scaling is good then open to closed loop transition should be fine anyway.

I only changed DropIn filter + Perrin Inlet (didnt touch the box) should i change MAF scaling?

Thanks! I’ve made it stock for now. I just somehow feel like it kicks in a little too late... is there a way around that?

Sent from my iPhone using Tapatalk

tomm.brz · 05-27-2018, 08:09 AM

it doesnt kick too late i think, it is also dependent on throttle opening and anyway, closed loop helps keeps timing high and consume less fuel

maf scaling is not necessary but i always noticed improvement in doing it, in any case.,. every car is different

steve99 · 05-27-2018, 08:36 AM

Maf scaling should be fine if intake assembly is stock.

I dont think their anything to be gained by forcing oen loop earlier.

You can jist make the oen loop and closed loop fuel tsrget tables similar

These days latest trend is to ise full time closed loop but you would need ecutek system to do that.

On na car not rearly needed just use ol and cl fuel tables. Stock it runs a lot leaner for longer in closed loop but just later the closed loop fuel tables A and B

Muchikori · 05-27-2018, 12:16 PM

Thanks for the responses guys! Maybe I’ll just need to modify CL and OL tables!

Sent from my iPhone using Tapatalk

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
BRZ down... Stalls right after start	bravedeer	Issues \| Warranty \| Recalls / TSB	12	09-12-2018 07:39 AM
E85 + OFT + headers: stalls out on cold start	ixobelle	Engine, Exhaust, Transmission	8	05-16-2017 12:52 PM
FR-S - AT nearly stalls when stopping	WryGuy	Issues \| Warranty \| Recalls / TSB	12	05-27-2016 04:04 PM
Automatic FR-S randomly stalls when Idling	LzT AngeL	Mechanical Maintenance (Oil, Fluids, Break-In, Servicing)	7	12-15-2014 09:31 AM
Car almost stalls but clutch is all the way in when stopped	LaertesSon	Engine, Exhaust, Transmission	11	05-13-2014 06:55 PM

05-27-2018, 06:09 AM	#2
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,993 Times in 2,983 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	Id probably put those setting back to stock. Not many people change those settings, maybe the def is incorrect or the table function is not properly understood. If you maf scaling is good then open to closed loop transition should be fine anyway.

05-27-2018, 08:09 AM	#4
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,279 Thanks: 515 Thanked 1,121 Times in 811 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	it doesnt kick too late i think, it is also dependent on throttle opening and anyway, closed loop helps keeps timing high and consume less fuel maf scaling is not necessary but i always noticed improvement in doing it, in any case.,. every car is different

05-27-2018, 08:36 AM	#5
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,993 Times in 2,983 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	Maf scaling should be fine if intake assembly is stock. I dont think their anything to be gained by forcing oen loop earlier. You can jist make the oen loop and closed loop fuel tsrget tables similar These days latest trend is to ise full time closed loop but you would need ecutek system to do that. On na car not rearly needed just use ol and cl fuel tables. Stock it runs a lot leaner for longer in closed loop but just later the closed loop fuel tables A and B

User Name		Remember Me?
Password