Smart computer???
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Senior User
Joined: Jun 2007
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Smart computer???
I was told by a friend that if you put in a cai and change the exhaust the computer will notice that the truck is going lean and will change the computer program, therefore making your upgrades pointless? I guess what he is saying is that the computer will adjust the program. And you are back to stock. And ideas?
Cargo Master
Joined: Aug 2002
Posts: 2,117
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From: Over Yonder, MN
The computer will adjust itself to keep the engine running at the correct Fuel / Air ratio, but a CAI and exhaust do not modify this ratio, they just help the engine breath better. So No, the computer will not adjust itself to negate the modifications.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,598
Likes: 145
From: SE Georgia
friend = idiot
the PCM will adjust the fuel to maintain the factory A/F ratio and keep the motor in safe parameters.
you will see improvement with a CAI and exhaust. But to maximize the gains, you need to get an Edge/Diablo or get some custom Dyno tuning done.
the PCM will adjust the fuel to maintain the factory A/F ratio and keep the motor in safe parameters.
you will see improvement with a CAI and exhaust. But to maximize the gains, you need to get an Edge/Diablo or get some custom Dyno tuning done.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 738
From: Isanti, MN
Tylus is right here, as usual.
Think about it...in order for your engine to run lean, it has to be getting too much air and too little fuel. Obviously a CAI and exhaust ain't gonna screw with the amount of fuel, but it will cause better airflow. This is going to give you more air.
The PCM will correct for it, adding fuel to correct the mixture.
What does more air and more fuel equal? MORE POWER.
Think about it...in order for your engine to run lean, it has to be getting too much air and too little fuel. Obviously a CAI and exhaust ain't gonna screw with the amount of fuel, but it will cause better airflow. This is going to give you more air.
The PCM will correct for it, adding fuel to correct the mixture.
What does more air and more fuel equal? MORE POWER.
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