What air cleaner base is NHRA Legal?

[Mike Brogniez]

[QUOTE=Wade_Owens;190557]

Originally Posted by John Leichtamer Jr

How much power can a stock type looking base help.
Any dyno test on this subject???????
QUOTE]

2 HP on a 4 jet.......but, even after all the facts and variances, I'm not convinced....

I leave mine off now.....

Wade

Was that dyno result with the hood closed or open.
A gain with the hood open can be lost with the hood closed due to carb to hood clearance.....