Berk HFC's installed I have a ?
02-23-2009, 03:55 PM
#42
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You do not need a reflash in order to run with TP's or HFC's. The ECU will adapt to the new learned fuel trim value over time. A reflash would help and would optimize the ECU fuel/timing to the HFC's, but it's not absolutely neccesarry.
The secondary O2 sensors do not have any effect on the performance of the car. Even if you smashed them and reinserted them into the BERK HFC's, there would be no performance difference. The secondary O2 sensors are soley there for catalyst efficiency monitoring, that is it.
Can you give us some more details on the conditions when it happens? And anyone else here who has the same type of symptoms? Let's all see if we can solve this together.
The secondary O2 sensors do not have any effect on the performance of the car. Even if you smashed them and reinserted them into the BERK HFC's, there would be no performance difference. The secondary O2 sensors are soley there for catalyst efficiency monitoring, that is it.
Can you give us some more details on the conditions when it happens? And anyone else here who has the same type of symptoms? Let's all see if we can solve this together.
Any idea on a fix for the hesitation / sputttering? I'm on the verge of going back to running stock cats. I can no longer stand this performance issue.
Please help.
02-23-2009, 07:03 PM
#44
dude i have the same problem your having!! today on my way to work i got an engine check light. i have berk cats and other **** then got a reflash. after that i got the injen intakes. i took my exhasut off anf i'm waiting for another one. gona go to autozone so they tell me what the light code it is
02-23-2009, 07:21 PM
#46
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02-23-2009, 07:23 PM
#47
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dude i have the same problem your having!! today on my way to work i got an engine check light. i have berk cats and other **** then got a reflash. after that i got the injen intakes. i took my exhasut off anf i'm waiting for another one. gona go to autozone so they tell me what the light code it is
Just the sputtering and hesitation. It seems to be hit and miss. Some cars don't have this issue with the same setup. What's wrong with ours?
02-23-2009, 07:40 PM
#48
i wish i knew. if i had more hr's here to work with it wouldn't be so bad. but those that have changed out around here have not had problems at all. i only had the problem when my cel was on. but since you are having it without a cel i would put the stock cats back on and see if it still does it. if it does then warranty will resolve the problem.
02-23-2009, 08:18 PM
#49
the shop i used to work at has a scan tool but ill be damned if i can remember what it is i borrow off top of my head. but it data logs. since the problem is not happening with our cars here i can't log any of the issues to see exactly what it might be.
02-23-2009, 08:22 PM
#50
i guess this is when i notice the problem in 6th gear if i'm rolling at 2000 its fine but if i press the gas pedal hard to pass a car or what ever then the car jerks. but i had never had a cell light and i've had the cats for like 4months. drove with them for like 3,000 miles.
now today it was a quick start and after like 10 miles of driving the engine light went on.
so i dont know man
02-24-2009, 06:27 AM
#53
^ can you recall the exact code? Look in here to match it with an error code..
https://my350z.com/forum/engine-and-...y-helpful.html
https://my350z.com/forum/engine-and-...y-helpful.html
P0420 TW (Two-Way) Catalyst System, Bank 1
P0430 TW Catalyst System, Bank 2
02-24-2009, 01:39 PM
#55
i know but its annoying and i'm sure it will come back.
the only possitive thing about this was that i learned how to check the codes it was too easy and free. damn dealers try to charge me once 100 bucks to run diagnostics on my daily driver hyundai accent.
the only possitive thing about this was that i learned how to check the codes it was too easy and free. damn dealers try to charge me once 100 bucks to run diagnostics on my daily driver hyundai accent.
02-25-2009, 09:57 PM
#56
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well so far so good. I have'nt had any bogging issues. But I dont know? I feel that when the car is at low rpm's and I floor it underload it seems slower until my RPM's go over 3500 or it's just me?
02-26-2009, 12:00 AM
#57
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autozone will read your CEL codes for free???
03-06-2009, 07:06 PM
#58
they gave me the mashine to read it my self. its so easy man.
update about the hesitation when driving in 6th gear and tring to accelerate quickly.
well i bought a borla exhaust and installed it today and the hesitation is gone. i think its because my ecu was reflashed/tune for a dual exhaust and i recently i had reinstalled the stock exhaust. maybe that caused it i dont know but now that i have a higher flow exhaust its gone.
update about the hesitation when driving in 6th gear and tring to accelerate quickly.
well i bought a borla exhaust and installed it today and the hesitation is gone. i think its because my ecu was reflashed/tune for a dual exhaust and i recently i had reinstalled the stock exhaust. maybe that caused it i dont know but now that i have a higher flow exhaust its gone.
03-07-2009, 12:43 PM
#59
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I've had the berks HFC as well as other members on there HR and most if not all get the stuttering around 2500-3k rpms in high gear and WOT.. Hopefully this lean nature of the HFCs installed does not create long term wear on the motor.
