You probably should post this in engine tech, but different air filters do different things, tune for what you have, if you have more than one option, use whatever works best.mbrooks wrote:changed from a flat based to drop base air filter and the cruise afr went from 14.5 to the neighborhood of 16-1. didn't know if the straight pipes changed this or something happened at the track so i put the flat base back on and it dropped back to previous readings. air filter is 14x4 and didn't think the top was too close to the carb inlet although the air flow must have been disrupted somewhat i'm thinking. the wot afr didn't change much from what i could tell.
here's a pic of the flat base, the drop base prob dropped around 1.5" or 2. wonder how many people end up trying to tune this out.
MadBill wrote:Speaking of same, I'm constantly amazed at how many guys tune their engines (street or race, to a fare-thee-well on the dyno, but never make even a single pull with the aircleaner/scoop they are actually going to run!
MadBill wrote:Re scoops, I was thinking more of catching basic design issues early, but to your point, ultimately nothing replaces the short black (or long white) dyno...
mbrooks wrote:changed from a flat based to drop base air filter and the cruise afr went from 14.5 to the neighborhood of 16-1.
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