Halltech venom
Advanced
Joined: Feb 2014
Posts: 93
Likes: 36
From: St Charles Illinois
Melting Slicks
Joined: Feb 2001
Posts: 2,804
Likes: 358
From: Northville, MI
The Throttle Body on the C5 is about 750 cfm and the C5Z is closer to 800 cfm. The standard C5 air bridge and filter flows more than enough air for a stock C5 or a C5Z, the air cleaner on the Z was enlarged to more than compensate for the additional 60 hp and still have plenty to spare. By increasing the size of the air bridge to flow more air you actually are slowing down its velocity after the MAF has sent the information to the PCM to make fueling/temperature/advance/etc adjustments. Unless your fuel trims were more than +5, that means you are running rich, you are in effect slowing down your engine efficiency. However, the intake will sound louder and more than likely you will associate that with better seat of the pants improvements.
Advanced
Joined: Feb 2014
Posts: 93
Likes: 36
From: St Charles Illinois
The Throttle Body on the C5 is about 750 cfm and the C5Z is closer to 800 cfm. The standard C5 air bridge and filter flows more than enough air for a stock C5 or a C5Z, the air cleaner on the Z was enlarged to more than compensate for the additional 60 hp and still have plenty to spare. By increasing the size of the air bridge to flow more air you actually are slowing down its velocity after the MAF has sent the information to the PCM to make fueling/temperature/advance/etc adjustments. Unless your fuel trims were more than +5, that means you are running rich, you are in effect slowing down your engine efficiency. However, the intake will sound louder and more than likely you will associate that with better seat of the pants improvements.
How are you slowing down the air speed AFTER the MAF when the MAF is located directly in front of the Throttle body?
Burning Brakes
Joined: May 2014
Posts: 763
Likes: 215
From: Detroit
Nevertheless, the Halltech is a high quality intake and arguably one of the best available, but it's pricey. I would recommend waiting for a used one to pop in the For Sale forum.
Last edited by Dbl_D718; Aug 15, 2018 at 09:50 AM.
