H/C Airflow....what is your max w/ your setup? .....
07-03-2003, 04:11 PM
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Re: H/C Airflow....what is your max w/ your setup? ..... I've looked at airflow a lot in the past. But you have to take it with a grain of salt. It has a lot to do with air density as well. So when I'm flowing 44 lbs/hr, is it at -500' DA, or is it at 3000' DA?
When I was watching RAGEman's air flow (G5X2 cam, stock heads), I saw ~43 lb/hr. He put down 404 RWHP. This was in cool (jacket) weather.
I've seen ~44 lb/hr on my motor, in the heat of the summer. It made 442 RWHP.
So, to really compare, you really need more than just air flow. Air density is also required.
My B1 cam-only motor flowed ~39-40 in cooler weather. It dyno'd 354 RWHP.
FWIW, I hate lb/hr as a measurement, and I hate AutoTap (and OBDII) period.
Scan rates are way too slow, and the measurement should be in g/sec. How do you know that the flow you saw at 6600 RPM was actually real, or was there time shift involved? Nothing happens 'simultaneously', even data snapshots and scan tool downloads...
Give me my OBDI datastream at 9 full frames of data per second any day.
-Andrew
When I was watching RAGEman's air flow (G5X2 cam, stock heads), I saw ~43 lb/hr. He put down 404 RWHP. This was in cool (jacket) weather.
I've seen ~44 lb/hr on my motor, in the heat of the summer. It made 442 RWHP.
So, to really compare, you really need more than just air flow. Air density is also required.
My B1 cam-only motor flowed ~39-40 in cooler weather. It dyno'd 354 RWHP.
FWIW, I hate lb/hr as a measurement, and I hate AutoTap (and OBDII) period.
Scan rates are way too slow, and the measurement should be in g/sec. How do you know that the flow you saw at 6600 RPM was actually real, or was there time shift involved? Nothing happens 'simultaneously', even data snapshots and scan tool downloads...Give me my OBDI datastream at 9 full frames of data per second any day.
-Andrew