If you guys are so worried about keeping your warranty leave your car stock dont mess with the aftermarket. Why should have to pay for a mistake that we caused. If you want their warranty do what they say. The damn gas panel says premium gas only. Use premium gas or pay the consequences of your own actions. If your so worried about having to pay big money to fix your $30k car, sell it and buy a toyota. Just because you dont think your mod has attributed to problem at hand, they arent going to care. If its a POSSIBILITY it has something to do with it, your screwed.
BTW any manufacturer is as bad as mitsubishi. Its the dealers that make it easier to get your car fixed. Ive had a heavily mod'd honda and believe me they sure as **** dont bend on warranty.

 

I think you missed the point. According to the poll (so far) 75% of owners with the misfire code have not used race gas. If those with the code and no race gas do not have a sticky residue on their plugs, then we do not have a solution to the code. It has plagued a number of owners who would love to find a fix. Thanks.

Speedlimit..

 

this is true

honda looks for a reason not to warranty something
mitsu looks for a reason why they should.

 

If you read the article carefully, Mitsu is telling you in the second paragraph what the freeze frame data will look like for this particular P0300 concern. It does not say that "all P0300 concerns are caused by failed injectors or racing fuel and additives". There are many things that could cause a random misfire in a vehicle.

I just had the P0300 in my car at 12K miles but my Freeze frame is at 76 MPH and the service dept told me that article does not apply in my case, and that there will be an ECU reflash soon. That's why the article differentiates between the two causes.

Pedro

 

That ecu reflash has been coming soon for like six months now. It must be in a container on a row boat from japan. LOL

 

Hopefully not the container ship that collided with the one filled with 3000 Hyundais over the weekend and sank somewhere in the Pacific! LOL

Until then, I've found that if I stay in 4th and carry a little higher load I don't set the code.

 

The full story, it was actually an oil tanker...

http://edition.cnn.com/2004/WORLD/as...4/car.ship.ap/

 

I'm getting the P0300 code soon after I installed my Hyper Exedy Clutch, possible cause for a harmonic resonance trip. When the light is on, it's very hard to drive, lots of clutch shudder with the ruff idling trying to get the thing to move in first, the exhaust pops like crazy. And I've never ever used racing fuel, only 93 or 94. When the lights not on runs great

 

I think they attributed my first evo's problem to a resonance coming through the tranny. It only threw a misfire code three maybe four times though. It ran like hell all the time until you unplugged the knock sensor then, it ran fine but didn't have it's normal power because the timing was retarded. I'm yet to recieve an official report on it though.

 

There would be many more Mitsubishi TSB's if the company wasn't so busy trying to cover them all up by blaming issues on customers.

SC~

 

My read on this is to push on the EPA for a recall based upon high emissions. If the light is on with a P0300, then as far as the EPA knows there is a problem.

Is there any way to track the status of this at the EPA? I tried a search but didn't find anything.

What about opening an action with the EPA to get things moving? There does seems to be a number of owners with this problem - potentially polluting the environment.....

 

I also just got my first 0300 code after installing my new clutch(ATS twin disk). I have ~25,000 miles on the car and have only now seen this code. My code was accompanied by some stumbling.

 

I have no codes showing up, have a custom street tune by al of dynoflash, I get this weird misfire/stutter when in fifth light load if I floor it around 3000 to 3400, al was worried when he experienced this first hand during my last street tune and told me to avoid putting the car in that particular situation, I am at 30,000 miles and really want to have this resolved before my warranty is out at 35,000. Anyone else running into this misfire without throwing a code?

 

Obviously mine did throw the code, but it occured in almost exactly the situation you just described. I was driving on the interstate in 5th at light load ant about 3500rpms and stepped on the gas as I was going up a hill.

 

Mitsuorder my car ran like that for quite a while but mine did it in third and fourth gear.