A few new logs to further confuse with questionable techniques.
These are on 92 octane and with a 65mm tb. The first is with the stock manifold and deletes, second is with the same 65mm tb and frpp intake.
Other differences are JBA shorty headers with factory cats.
The previous logs quoted in this post were with E85, 62mm tb, Mac LT headers with Pypes high flow cats and a prochamber.
I'm sticking with 41 lbs of airflow as the delta. It's important to note that the airflow measurement is dependent on the maf xfer, weather conditions, and other things so this is nothing more than a gee whiz comparison. Including all the variables I find it quite interesting that the numbers are somewhat repeatable in baseline numbers and with similar changes.
Once again 41 lbs was made at close to 6100 rpms with the stock intake manifold. It also maxed out around 43 lbs just like the previous log quoted in this post.
This is with the FRPP intake manifold. 41 lbs comes on earlier but not nearly as early as it did with E85. Max airflow is close to 47 lbs just like it was with E85.
Also of note is that the airflow in the lower rpms seems to be greater with the stock intake which is consistent with the lost power most na motors experience with the FRPP intake. IMO unless the motor is moving more than 40 lbs of air the FRPP intake is only going to result in losses. This was my experience with a smaller na 3v.
To get a better idea I should really switch back to E85 with the current setup and try to get out during similar weather conditions. The pulls are being made on the same stretch of pavement.
One last thing I notice with the FRPP intake is that load doesn't have the big drop in higher rpms. Since load is a measure of volumetric efficiency or how much air is moving through the motor these logs show that magic point of 41 lbs of air as being where the stock intake drops off and the frpp takes off.
I'm going to reiterate that these tests aren't very exact, they are ballpark figures but there are enough similarities that IMO the FRPP intake manifold is of no benefit to a motor moving less than 41 lbs of air and even then the benefits don't really manifest unless you are revving to at least 7000 rpm.
