Performance Booster???
07-15-2001, 04:08 PM
#1
Instructor
Thread Starter
Performance Booster???
Reviewing an ad for the K&N air filter, I read that replacing my OEM with the same would result in a "98% increase in cubic feet of air per minute." Well, that sounds impressive, but will I notice any change in performance or gas mileage? Devek said not really and the main benefit of the K&N is that it can be cleaned and replaced. This ad, found in "Performance Products" at least implies that there is more to it than that. Any thoughts?
07-15-2001, 05:25 PM
#2
Patrick,
Replaced the stocker with K&N last week.
My seat of the pants impression was, initially, no change. However, a non-related Battery/charging problem reared its ugly head the day I changed filters. So, after pricing suitable replacement battery's
-sticker shock- I bought a trickle charger and left it on for two days. When I hooked up the battery again there was some initial hesitation and some serious low-idle almost stall situations for about 10-15 minutes around town. Then Pattycakes smoothed out all by herself - brain remap? -. Acceleration seems smoother and quicker. I'm not getting that kickdown lunge anymore and I know I'm shifting sooner to second, though 2nd seem to pull with more authority but, again seat of the pants, pulls longer, 3rd -drive showed me nothing significant except after the shift from 2nd and somewhere after 3600-3800 rpm where the engine informs you that its time for some driver attention to business at hand--DRIVING THE CAR !!!
While I believe the K&N makes a noticeable
DIFFERENCE, to me,I tend to doubt any SIGNIFICANT HP gains. Responsiveness seems to be the major claim to fame, particularly, when you romp on it in 1st and on the upper end of high gear where I assume pumping air to relatively small, fast moving intake valves is a good thing.
Anyone else got something SOLID on the K&N's I'm as curious as the next guy when it comes to sales hype vs reality.
John Struthers
1982 Weissach, AUTO. "Pattycakes"
Replaced the stocker with K&N last week.
My seat of the pants impression was, initially, no change. However, a non-related Battery/charging problem reared its ugly head the day I changed filters. So, after pricing suitable replacement battery's
-sticker shock- I bought a trickle charger and left it on for two days. When I hooked up the battery again there was some initial hesitation and some serious low-idle almost stall situations for about 10-15 minutes around town. Then Pattycakes smoothed out all by herself - brain remap? -. Acceleration seems smoother and quicker. I'm not getting that kickdown lunge anymore and I know I'm shifting sooner to second, though 2nd seem to pull with more authority but, again seat of the pants, pulls longer, 3rd -drive showed me nothing significant except after the shift from 2nd and somewhere after 3600-3800 rpm where the engine informs you that its time for some driver attention to business at hand--DRIVING THE CAR !!!
While I believe the K&N makes a noticeable
DIFFERENCE, to me,I tend to doubt any SIGNIFICANT HP gains. Responsiveness seems to be the major claim to fame, particularly, when you romp on it in 1st and on the upper end of high gear where I assume pumping air to relatively small, fast moving intake valves is a good thing.
Anyone else got something SOLID on the K&N's I'm as curious as the next guy when it comes to sales hype vs reality.
John Struthers
1982 Weissach, AUTO. "Pattycakes"
07-15-2001, 10:53 PM
#3
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Was at a dyno day last year. A GT put down the same numbers with a stock filter vs. the K&N on back to back runs.
Bottom line-On a 928 the K&N will allow more dirt without any peak HP gains.
Bottom line-On a 928 the K&N will allow more dirt without any peak HP gains.
07-16-2001, 03:06 AM
#4
USMarine
Rennlist Member
Rennlist Member
John V: A GT put down the same numbers with a stock filter vs. the K&N on back to back runs.
Bottom line-On a 928 the K&N will allow more dirt without any peak HP gains.
Bottom line-On a 928 the K&N will allow more dirt without any peak HP gains.
gains!