C5 c.a.i horspower question
Le Mans Master
Joined: Mar 2002
Posts: 8,466
Likes: 51
St. Jude Donor '17
you are effectively changing the way the AIT reads the air coming in and it will make the adjustments for air fuel mixture.
A tune is not necessary until you put on say headers and cai.
Melting Slicks
Joined: Feb 2001
Posts: 2,804
Likes: 358
From: Northville, MI
YES and NO, changing to a CAI means bringing in cooler, more dense air, it also means you must be thorough in making sure there are no vacuum leaks added after the MAF. The cooler incoming air is where HP is gained, the original PCM calibrations were give firmware with an adaptive strategy designed to maximize performance within the EPA guidelines. Changing from a stock coupler to a smooth coupler may allow a slightly larger volume of air to go to the MAF/TB but it actually goes through at a slightly slower rate and changes some of the settings on the performance table. Most equate louder noise to better seat of pants performance. Driving around town and running hard on the street occasionally it will not matter. To someone serious about drag racing, they are looking at trap speed and equating that to usable performance gains/losses. Like the variable above, the quality of the tunes differ the same way.
Run scan logs and you will find out how much it will help or hurt performance, but for about 99.75% of us if it sounds goods and runs smooth it is fine. HTH
Run scan logs and you will find out how much it will help or hurt performance, but for about 99.75% of us if it sounds goods and runs smooth it is fine. HTH
Melting Slicks
Joined: Jul 2012
Posts: 2,507
Likes: 9
YES and NO, changing to a CAI means bringing in cooler, more dense air, it also means you must be thorough in making sure there are no vacuum leaks added after the MAF. The cooler incoming air is where HP is gained, the original PCM calibrations were give firmware with an adaptive strategy designed to maximize performance within the EPA guidelines. Changing from a stock coupler to a smooth coupler may allow a slightly larger volume of air to go to the MAF/TB but it actually goes through at a slightly slower rate and changes some of the settings on the performance table. Most equate louder noise to better seat of pants performance. Driving around town and running hard on the street occasionally it will not matter. To someone serious about drag racing, they are looking at trap speed and equating that to usable performance gains/losses. Like the variable above, the quality of the tunes differ the same way.
Run scan logs and you will find out how much it will help or hurt performance, but for about 99.75% of us if it sounds goods and runs smooth it is fine. HTH
Run scan logs and you will find out how much it will help or hurt performance, but for about 99.75% of us if it sounds goods and runs smooth it is fine. HTH
