L31MaxExpress
I'm Awesome
My LS3 cartridge MAF placement is less than ideal but I really have little choice. From 8,000 hz and beyond my MAF flow table is straight out of a GM 525 HP LS3 and below that it has small changes to improve fuel trims. My MAF is literally shoehorned into the air inlet at the end of the 90" bend coming off the airbox and nearly wedged between the oil fill tube and firewall.
What GM has to say about MAF placement.
Mass Air Flow (MAF) Sensor
NOTE: It is critical that the MAF sensor is mounted per the instructions below. Vehicle performance and/or driveability may be affected if it is not mounted as recommended. The mass air flow sensor must be installed in the induction system using the supplied MAF sensor mounting boss. The induction system should be 4 inches in diameter and have a minimum straight section 6 inches in length. Mount the MAF sensor in the middle of the straight induction section, ensuring that the middle of the mounting boss is at least 10 inches from the throttle body.
What GM has to say about MAF placement.
Mass Air Flow (MAF) Sensor
NOTE: It is critical that the MAF sensor is mounted per the instructions below. Vehicle performance and/or driveability may be affected if it is not mounted as recommended. The mass air flow sensor must be installed in the induction system using the supplied MAF sensor mounting boss. The induction system should be 4 inches in diameter and have a minimum straight section 6 inches in length. Mount the MAF sensor in the middle of the straight induction section, ensuring that the middle of the mounting boss is at least 10 inches from the throttle body.
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