Yeah, I had this issue also. The light was just a nuisance but no driveability issues here either. It came on the hwy at 80mph one time, changed plugs gapped at .25 also, light came on 3 days later...then went off 3 days later and never returned! This was about 3 months ago! Maybe the plugs kicked in after a while, I dunno.

 

I have changed my plugs... wires and the light still comes on.. What else can I do...

Mods are below in my Sig

 

i have the same issue. cleared codes today, light came on about 5 minutes later.

 

well I currently have this problem with driveability issues. now wether or not this is related to the P0300 code I dont know. I am getting hesitation under part throttle under crusing conditions...

 

I had this problem last year. It alwasy happened in the morning on the way to work. I would be accelerating and all the sudden bam! It was like hitting the brakes, like the ECU just quit giving gas for a half sec. Then back to normal and about a minute later throw the SES. Then at cruising around 80mph it did it a lot too. There were quite a few Mitsu TSBs on this. The crank angle sensor is the culpruit. I went and had the dealer flash and went from having the SES every week to almost a year without one. I also got tuned by Al after the dealer flash and still no problems. That was last August. In your case though, it very well could be in your tuning there. Not sure exactly what they change in the ECU programming during the latest dealer flash but it does the trick.

 

looks like I need to get ecuflash so I can save my custom flash before they erase it....

 

It is time to replace plugs anyways...might as well get it done. It won't hurt. It's good that your random cylinder misfire code (P0300) went away.

 

I have a appointment next saturday at a local dealership here in Pompano beach,FL.. so we will see what the upgrade software will do..

 

Ok my software is up to date... so they said possible misfire on 1.. I will change the coil that runs that one and see what happens

 

i have the same problem. went to auto zone and came up with p0300. but im have no drive ability issues

 

Same problem here, many things can cause it. First off there is a problem with it in the computer that mitsu can maybe take care of, and sometimes it can be takin care of with a flash, but clutches and high lift cams can also affect it