Installed a new cold air intake on my 2000, 2.4 Mitsubishi Eclipse(manuel) a few weeks ago. I reset the ecu, but after over 100 miles of driving it still can not idle at a steady rpm, it only has good acceleration/power sometimes, and it lurches a lot while driving. There are no leaks now and seeing as there were no problems before i installed it, I thought for sure that after this much driving it would be adjusted and running great. However, it has not shown much improvement. i have no good idea what is going on and am desperate to know what the problem is and how i can fix it. If anyone has the answer or even an idea please let me know, thanks.
unfortunately for the most part cold air intakes are crap, they seldom live up to manufacturers claims, and worse, can cause damage to your engine. Your car had a factory cold air intake already, engineered to work correctly with your engine and ecu. This question is now a daily occurrence, and sadly many stories such as yours have the same outcome, a plastic sewer pipe with an air filter stuck to it, has done nothing, except cause possible damage to your engine. Take this junk off your car, and toss it, I hope you kept the original air filter and factory air cleaner intake. And please next time, don't drive for two weeks that thing should have been off your car, 20 minutes after you put it on. Always check with your mechanic, I found some information about cold air intakes and after looking at the information, called my mechanic, and he said DO NOT SCREW UP A PERFECTLY GOOD RUNNING CAR. my second question about power chips had the same answer, so remember this too please, NO POWER CHIPS!!!. YOU NEED TO PUT YOUR VEHICLE BACK TO STOCK CONDITION and hope and pray that there is no internal damage. The computer can lean out your mix, and if this happens you can burn up the motor easily. good luck, let us know if you were able to save your motor, we like those stories.
You got the maf dirty. Clean it with electronics cleaner.