I have been running my car with the disable code since you posted it up and havent had 1 single issue

 

Do you mean no P030X codes, or are you suggesting that it seems that all codes have been disabled?

 

No P030X codes. Also people are weary of doing this disable in fear of screwing up something else in their ROM, but that is not true.

 

ok, that's what I expected for issues. All the other places where the on/off pops up are needed to fully disable the P030X algorithm.

 

So this is still a good idea to get done ??? I am tired of clearing out that dawn code!!!

 

Now that is a loaded question! It depends on WHY you are doing it. If you KNOW why your car gets the random misfire codes then MAYBE. If you car is not modded to the level where this is necessary, then no. How modded is that? If you are on the stock turbo on gasoline, with a stock flywheel, then NO. Even with 1100cc injectors no. Even with 262 cams, no. If your car is running very large injectors (1600cc plus) and 272 or larger cams then maybe. Most people should never need to disable this code.

Some generalizations that apply to the Evo X in this context "most of the time":

At idle, vacuum leaks can cause this. (if the vacuum leak is in the boost control hoses, it can also cause over boosting)

Exhaust leaks near the primary o2 sensor can cause this.

If you get a misfire code, change the plugs first, ask questions later. 75% of the time this will fix it if not caused by the above.

If you get a misfire code at boost and you have done the above, replace the fuel pump relay.

If the poblem persists, verify that the ECU calibration keeps the fuel trims within acceptable range.

 

Why? How to use lightweight flywheel then?

 

My X is throwing only P0300 as soon as I installed a triple Carbonetic clutch with light flywheel.If I don't clear the code,the cel goes off sometimes every two cycles.Then comes back again.Mr Fred and Golden could you please provide the code and addresses for 53040007 so I can test it?Thanks.