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Discussion Starter #1
Hello I have a 2010 focus ses, I recently made a cold air intake for it, but all my shift points were off and at 80mph my Rpms were at 3500-4000, I had autozone scan it and it said the engine was to lean. What can I do to fix this and my dumb computer?
 

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Try disconnecting the battery for 20-30 minutes and clean the MAF sensor. There are others on here that have the same problem and I'm sure they'll chime in soon.
 

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Fswerks.com and they have really helped me to get my car where I want it. Smoked a new si yesterday and I'm just rockin bolt ons and tune
 

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What is the inside diameter of the mass air section of the tube?. If the inside diameter at the mass air meter is larger than the factory tube, that is your problem. You have two choices if thats your problem, get a tune, or use a factory diameter tube.
 

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The tube is larger than the sensor, i will try a smaller tube and disconnecting the battery. does the smaller tube just decrease the amount of air?
 
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