If you are using one of these type air cleaner bases - stop, and throw it away

It's the exact same squared off with notched wings shaped base as in the first pic that gave bad results. There was not even a lid involved. It's the vertical airflow entry into the carb that causes the issue, lid height relative to the carb top is another additional (potentially bad) issue

 

So a 3 or 4 inch filter should resolve that issue

 

I see what you're saying but wouldn't the Tornado top section change the airflow dynamics essentially helping it flow better? I agree the base is virtually the same but since the Tornado section is on it it's NOT exactly the same as the one that gave bad results. Have you tested one of these Tornado bases? Do you have recorded results like the others? Does it gain or hurt airflow or performance Those were my questions in my first post. I am not a professional airflow guy like you and I wont pretend to be or pretend to know much about this at all, I'm just curious as all. I'm currently running a Star wars air cleaner which I have no idea if its helping or hurting my airflow. I have asked a few times in this thread if anyone has tested that one also.

 

https://www.popularmechanics.com/cars/a310/1802932/

 

I found about a total of 30hp increase by sticking magnets on the exhaust pipes in 1 foot intervals, but I found you have to make sure they have the south pole orientation face forward, and the north face the rear or you will get a rough running engine.

It loses about 3% when I am heading west, and actually picks up 4% if I head east, and that is due to the Corrola S effect. Thanks, Toyota!

 

Hilarious!

 

Next week will will discuss stepped headers and merge collectors. Yes,they work.

 

That was not tested.

 

Picked up the Stef's B&B unit #72200 out of Summit. Question posted there claimed it measured 3.8" tall from carb lip to top of dome with a 3" filter, but it's not; it's 2 7/8". I'll have somewhere between 2.75 and 3.25 (front clip is off), so I think it'll work out. Solid piece.
https://www.summitracing.com/parts/stf-72200

 

https://www.v8buick.com/index.php?t...-intake-swap-or-drop-base-air-cleaner.340946/

 

And don't forget: flow test from a while back -
Air Filter Flow Test
14" x 3" Round Flow # @ 5" H2O % Flow Rating Swirl
Brand Part # Size Material
Wix 46945R 14x3 Glass 860 CFM 100% 119
K&N E-1650 14x3 Cotton 835 CFM 97.1% 126
AIS Cotton AF3C 14x3 Cotton 830 CFM 96.5% 121
AIS Cotton AF3C-2 14x3 Cotton/Synt 830 CFM 96.5% 130
FRAM FRM4 14x3 Paper 791 CFM 91.9% 128
Moroso 97080 14x3 Paper 776 CFM 90.2% 131
Amsoil 52 14x3 Foam 774 CFM 90% 140
Purolator APF74 14x3 Paper 736 CFM 85.6% 146
AIS AF3 14x3 Paper 724 CFM 84.1% 148
Wix 42095 14x3 Paper 721 CFM 83.8% 149
Wix 42095R 14x3 Paper 712 CFM 82.8% 143
Fram CA136 14x3 Paper 710 CFM 82.6% 142
Edelbrock 1217 14x3 Paper 701 CFM 81.5% 154
NAPA/CompPol 22095 14x3 Paper 693 CFM 80.6% 155
Wix 42095 14x3 Paper 674 CFM 78.4% 163
Wix 46947R 14x3 Paper 595 CFM 69.2% 175

Air Filter Flow Test
14" x 4" Round Flow # @ 5" H2O % Flow Rating Swirl
Brand Part # Size Material
Wix 46944R 14x4 Glass 907 CFM 100% 116
AIS Cotton AF4C 14x4 Cotton 883 CFM 97.4% 116
K&N E-1690 14x4 Cotton 882 CFM 97.2% 121
K&N 61-4020 14x4 Cotton 880 CFM 97% 120
AC Delco 697C 14x4 Paper 825 CFM 91% 132
Accel (dry) 70004 14x4 Foam 820 CFM 90.4% 120
Amsoil 25 14x4 Foam 820 CFM 90.4% 131
Motorcraft FA705 14x4 Paper 814 CFM 89.7% 131
Wix 42096 14x4 Paper 813 CFM 89.6% 132
AIS AF4 14x4 Paper 803 CFM 86.5% 138
Fram CA3492 14x4 Paper 796 CFM 87.8% 126
MotoMaster 2330090 14x4 Paper 788 CFM 86.9% 135
Wix 42096R 14x4 Paper 786 CFM 86.7% 136
Wix 46946R 14x4 Paper 683 CFM 75.3% 155