Average HP Gains (?30HP?)

cre · 08-12-2010, 03:00 AM

There's no doubt about K&N's air filter sucking (pun intended)...

Here's a fun experiment for someone: Buy a differential manometer (hint: try searching ebay for magnehelic

). Now connect the filter to a vacuum and connect the hose to a nipple in that pipe. Now build a box around the filter and give it an inlet pipe the same size as the outlet. Add a nipple and connect the other gauge hose to that nipple... now turn on the vacuum or engine and record the pressure drop across the filter. Now try the next filter and record it, and so on. This and the minimum particulate size are the two important qualities behind a good filter... personally I'll take something with a tiny bit more restriction if my engine will last longer, but with the three I listed the pressure drop I've seen reported is minimal anyway.

08-12-2010, 03:00 AM	#17
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	There's no doubt about K&N's air filter sucking (pun intended)... Here's a fun experiment for someone: Buy a differential manometer (hint: try searching ebay for magnehelic ). Now connect the filter to a vacuum and connect the hose to a nipple in that pipe. Now build a box around the filter and give it an inlet pipe the same size as the outlet. Add a nipple and connect the other gauge hose to that nipple... now turn on the vacuum or engine and record the pressure drop across the filter. Now try the next filter and record it, and so on. This and the minimum particulate size are the two important qualities behind a good filter... personally I'll take something with a tiny bit more restriction if my engine will last longer, but with the three I listed the pressure drop I've seen reported is minimal anyway. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
What is the average age of the MKIII driver?	colin172	MKIII Supra	280	10-24-2011 02:14 AM
3" exhaust/2.5" wit not cats Hp Gains?	supraman121	MKIII Supra	0	08-20-2007 06:09 AM
How much is this Supra worth? Whats the average?	GTE89	MKIII Supra	6	12-12-2006 04:56 AM
Average Mileage of a MK3??	h8z2luze	MKIII Supra	37	11-05-2006 02:07 PM