Quote:
quote:Originally posted by FRM3
You might take a look at the dyno chart for K & N FIKP on the PTGT ---- even more to ponder with Gains from about 3650 to 5800 -5900. In fact traction being the issue that it is, if the primary gain is midrange to upper end that suits me better.
http://www.kandn.com/dynocharts/57-1531.jpg
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That is not quite an apples-to-apples comparison: the Airaid graph is zoomed-in and does not show the whole RPM spectrum. Their product, to me, appears to lack substance. (Resellers need not reply since the higher profit-margin Airaid is a conflict of interest. "Cheaper" is not synonymous with "better value".) Getting the tables and letting Excel graph the two would be ideal.
Comparisons to bone-stock is pretty much irrelevant: I would like to see a dyno of stock airbox with both silencers removed and a drop-in K&N, since it appears that is what most of us have done, at least at first. For those of us who fall into that category, the question is really about the plumbing. Would replacing the bends and the third silencer yield any gains? Since the Airaid does not do this, I would wager that the K&N drop-in sans silencers configuration would dyno identically to the Airaid.
My guesses to the Airaid vs. Typhoon graphs:
- Removing the silencers and using a better flowing air filter lessens the air restrictions enough to let more air in at sufficient velocities at the bottom end, but still too restrictive > ~4500 RPM
- The Typhoon lets more air in overall, however, its unrestrictive nature does not generate sufficient velocity at the low end, but is perfect for the mid-upper end.
Basically the same concept that applies to exhaust and headers, vis-a-vis 4-1 vs. 4-2-1.
Does this sound right?