IW STi Forum banner

1 - 11 of 11 Posts

·
Registered
Joined
·
73 Posts
Discussion Starter #1
I have a 2017 sti basically FBO and flex

Grimmspeed up pipe with tial 38mm external wastegate
Invidia cataless downpipe
Nameless catback
AEM Intake
Perrin turbo inlet
IAG TGV delete with 3mm spacers
Cobb EBSC
IAG AOS
NGK one step colder plugs
ID 1300 cc injectors
IAG V2 rails with dampers
IAG braided fuel lines
Aeromotive FPR and gauge
AEM 320 fuel pump
Cobb fuel flex sensor and pressure kit
IAG Air/EGR pump delete

I failed emission and I cant get evap or egr monitor ready. Ive kept my tank between 1/4-3/4, driven at 55 mph and kept it there for a while. Drove at 40 for a while, went to 65 and just let it coast to 40ish for a few times. I dont know what to do, has anyone had this issue? I email my tuner and he sent me a new map, i drove 300 miles and nothing. Both are still not ready.
 

·
Registered
Joined
·
1,702 Posts
Well everytime the car is reflashed/retuned, all the obd readiness is reset if i remember correctly. Clearing all codes and resetting the battery will also do this. I know there are certain sequence/driving styles for each obd minitor to be reset and i know it can be difficult to get them reset. I think your best bet is to continue driving. Take a nice long trip somewhere and recheck.
 

·
Registered
Joined
·
264 Posts
If your tuner has an old version of the software, you can just uncheck the box to monitor self-test (not likely anymore)


Otherwise, you just gotta do whatever the driving cycle is to get them ready after a tune or reset.
 

·
Registered
Joined
·
73 Posts
Discussion Starter #4
Ill ask about that, any tuners out here know if i got him to make a map for evap delete if itll just make the monitor ready? I know for my cat and air pump i have deleted and they are ready all the time even after a reflash
 

·
Registered
Joined
·
367 Posts
It took several hundred miles for all of my monitors to be ready whenever I unmarried my AccessPort and converted my car back to stock. The EVAP monitor was the most stubborn.

The FSM outlines some Subaru specific drive cycles that you can follow. I came up with a drive cycle that combined their requirements as well as other OBD2 drive cycles that I found online.

  • Cold Start. In order to be classified as a cold start, the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.
  • Idle. Idle for at least 30 seconds. Turn on the air conditioner, rear defroster, and headlights and idle for a while longer. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim.
  • Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 55mph is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
  • Hold Steady Speed. Hold a steady speed of 55mph for 3 minutes. During this time the O2 response, Air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
  • Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 20mph. During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
  • Accelerate. Accelerate at 3/4 throttle until 55-60mph. This will perform the same diagnostics as in step 3.
  • Hold Steady Speed. Hold a steady speed of 55mph for 5 minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
  • Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.
  • Drive the vehicle for more than 30 minutes in total to ensure a full heat cycle.
  • Park the car for over 10.5 hours (typically left overnight). Must be between 40-113°F ambient air temperature.
  • Drive the vehicle at a steady-state of speed of 55mph with minimal throttle angle change at least 5 minutes.
Notes:
  • Ensure the fuel level is between 1/4 and 3/4 tank
  • Avoid refueling immediately before or during the drive cycle. There'll be a large amount of evaporating gas immediately after the refill. Drive for at least 10 minutes after refueling prior to starting a drive cycle.
  • Repeat for as many miles and key cycles as possible
You'll have to check with your tuner regarding the EGR monitor since you have an Air pump/EGR delete.
 

·
Registered
Joined
·
73 Posts
Discussion Starter #6
Never got evap ready but i just plugged in the egr and air pump and drove 57 miles and the egr became ready and i passed inspection. Thanks for all your help
 

·
Registered
Joined
·
2 Posts
It took several hundred miles for all of my monitors to be ready whenever I unmarried my AccessPort and converted my car back to stock. The EVAP monitor was the most stubborn.

The FSM outlines some Subaru specific drive cycles that you can follow. I came up with a drive cycle that combined their requirements as well as other OBD2 drive cycles that I found online.

  • Cold Start. In order to be classified as a cold start, the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.
  • Idle. Idle for at least 30 seconds. Turn on the air conditioner, rear defroster, and headlights and idle for a while longer. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire and if closed loop is achieved, Fuel Trim.
  • Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 55mph is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
  • Hold Steady Speed. Hold a steady speed of 55mph for 3 minutes. During this time the O2 response, Air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
  • Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 20mph. During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
  • Accelerate. Accelerate at 3/4 throttle until 55-60mph. This will perform the same diagnostics as in step 3.
  • Hold Steady Speed. Hold a steady speed of 55mph for 5 minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
  • Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.
  • Drive the vehicle for more than 30 minutes in total to ensure a full heat cycle.
  • Park the car for over 10.5 hours (typically left overnight). Must be between 40-113°F ambient air temperature.
  • Drive the vehicle at a steady-state of speed of 55mph with minimal throttle angle change at least 5 minutes.
Notes:
  • Ensure the fuel level is between 1/4 and 3/4 tank
  • Avoid refueling immediately before or during the drive cycle. There'll be a large amount of evaporating gas immediately after the refill. Drive for at least 10 minutes after refueling prior to starting a drive cycle.
  • Repeat for as many miles and key cycles as possible
You'll have to check with your tuner regarding the EGR monitor since you have an Air pump/EGR delete.
That drive cycle doesn't work worth a crap for me, I've tried every single drive cycle I've found online and my egr, evap and 02 sensor won't get ready!

Mods:
Cobb dp
Cobb intake
Phenix fpr
Ecbs
1050x id injectors
Dw65 fuel pump
Borla s type catback
Protuned at Vems in Colchester Vermont

I need a 2017 sti drive cycle but NOBODY ONLINE knows the drive cycle for an sti and can't provide me official Subaru guidelines... I'm about to set this car on fire... 02 sensor reads between .1 and .9 "healthy" evap fuel adder is sending signals, I'm not sure what to watch on the AP for egr.
 

·
Registered
Joined
·
367 Posts
how long/hard are you guys driving? most vehicles need ~45min driving and on others reach operating temp and 65mph, there are still a few that go off of miles driven...i havent looked at what subaru has but if theres something wrong with mine it sets the code pretty quick so i dont think its that long lol
 

·
Registered
Joined
·
501 Posts
I'm not sure tuned cars can ever get ready. Isn't that one of the downsides of getting it tuned? I know on older versions of the Cobb there was a way to force readiness but I believe it was removed from the newer versions. You could look into getting a tactrix cable and maybe being able to force it ready with that. Or look into some ulterior methods to pass the test.
 

·
Registered
Joined
·
2 Posts
Update! My tuner made an adjustment to my AVCS inside of the tune and the egr popped after the first drive cycle! Now all I really need is the 02 sensor to get ready, I can deal with the evap not ready, I can still pass with one not ready 😉
 

·
Registered
Joined
·
1,702 Posts
Update! My tuner made an adjustment to my AVCS inside of the tune and the egr popped after the first drive cycle! Now all I really need is the 02 sensor to get ready, I can deal with the evap not ready, I can still pass with one not ready 😉
This will depend on what state you live in. Emissions vary per state. Here in NJ, you are allowed 1 monitor to not be ready.
 
1 - 11 of 11 Posts
Top