P0300 Codes
P0300 and related 300 codes.
Has anyone put this(to disable) into the ROM yet for the 2010 EVO X GSR? Just wondering, as I have not seen it yet.
John
Has anyone put this(to disable) into the ROM yet for the 2010 EVO X GSR? Just wondering, as I have not seen it yet.
John
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Yes. Really.
The car is high compression, 2.2L, sleeved and step colder plugs. It is also the shop car. So if you think this is a problem, I am happy to debate it with you.
I am not looking to put a band aid on a customer car b/c the tune is off. I would think I would get the benefit of the doubt on this.
John
The car is high compression, 2.2L, sleeved and step colder plugs. It is also the shop car. So if you think this is a problem, I am happy to debate it with you.
I am not looking to put a band aid on a customer car b/c the tune is off. I would think I would get the benefit of the doubt on this.
John
I've never seen an evo throw a lot of P030X codes before, but then again, we've always used stock plugs.
What CR are you running?
Are you seeing high knock counts?
What CR are you running?
Are you seeing high knock counts?
Bad injectors will throw that code too.
0 Knock counts
FIC 1100cc New Injectors, OHM consistent
The motor is running very nicely, just the code. I am pretty confident this is related to the 10:1CR, aggressive cam profile, HKS step colder, and dual Cosy springs.
FIC 1100cc New Injectors, OHM consistent
The motor is running very nicely, just the code. I am pretty confident this is related to the 10:1CR, aggressive cam profile, HKS step colder, and dual Cosy springs.
If you are on E85, I highly recommend using the stock temp plugs.
Edit: I'd run stock on pump gas too.
Edit: I'd run stock on pump gas too.
So you guys have problems with sparking down there? Is it that spark plugs don't work as well upside down?
:bowlol:So you guys have problems with sparking down there? Is it that spark plugs don't work as well upside down?
Welcome to the dark side lol... No one disable the P0300 yet. I have same problem for more than a year now. Just live with it hahaha
A P0300 is a real code. If you have this code, you need to fix the cause. Your car is missing.
Releasing a disable would be stupid. That would be like making it so that you can't tell when you are low on gas.
Releasing a disable would be stupid. That would be like making it so that you can't tell when you are low on gas.
hahaha. well done.So you guys have problems with sparking down there? Is it that spark plugs don't work as well upside down?
I would agree a P0300 is typically a 'real' code. However there are extenuating circumstances that would indicate otherwise. A vehicle with different comp ratio, fuel, cams, etc can cause a false reading.
Could explain how those things could lead to a false reading?I would agree a P0300 is typically a 'real' code. However there are extenuating circumstances that would indicate otherwise. A vehicle with different comp ratio, fuel, cams, etc can cause a false reading.
The ECU has a crank sensor that can detect the acceleration of the crank every time the cylinder fires. If you logged it, it crank acceleration would look like it pulsed.
When a cylinder misses, there is a lack of acceleration for that moment in time. If it happens for the same cylinder over and over, it logs this code.
I'm guessing that cams and compression ratios could change the pattern that the ECU is looking for.
When a cylinder misses, there is a lack of acceleration for that moment in time. If it happens for the same cylinder over and over, it logs this code.
I'm guessing that cams and compression ratios could change the pattern that the ECU is looking for.
Ahh, gotcha. Thanks for the clearing that upThe ECU has a crank sensor that can detect the acceleration of the crank every time the cylinder fires. If you logged it, it crank acceleration would look like it pulsed.
When a cylinder misses, there is a lack of acceleration for that moment in time. If it happens for the same cylinder over and over, it logs this code.
I'm guessing that cams and compression ratios could change the pattern that the ECU is looking for.
This is can also be caused by a light weight flywheel. The difference in weight is enough to throw off the crank angle sensor.The ECU has a crank sensor that can detect the acceleration of the crank every time the cylinder fires. If you logged it, it crank acceleration would look like it pulsed.
When a cylinder misses, there is a lack of acceleration for that moment in time. If it happens for the same cylinder over and over, it logs this code.
I'm guessing that cams and compression ratios could change the pattern that the ECU is looking for.
In certain cases this code can be an issue, but for some of us, is just an annoying phantom code. Any REAL cylinder misfire will most likely show up as p030X, cylinder specific.
A disable for this would be nice. FWIW the 8 and 9 evos disable this.
I use too always get this cel code...More on cold nights and while on e85... The car would still run perfect but I would get the code which was really annoying but I lived it because I read it was common issue... Now i dont get the code since my new tune which is great... I wouldnt disable the code tho since I would definitely want to know if i was having an issue specially knowing how e85 can be...
:thumbup:So you guys have problems with sparking down there? Is it that spark plugs don't work as well upside down?
riceless:1 - 20 of 21 Posts
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