I installed a drop in K&N on my 98 civic at about 80000kms. I'm now at
229000kms with the same filter. I noticed the following differences:
1. My car sounded different, i like the sound but whatever
2. better throttle reponse
3. marginal power improvement
4. marginal but noticeable fuel economy gain
I have put a factory filter in since, just to see if i was delusional. the
differences above are actual changes. Now whether the extra dirt that gets
in the motor (according to the reports tegger showed us) is worth all this,
So far, my car has lasted and performed above my expectations. There may be
more wear, but I can't tell. In my mind, I like the idea of not having to
throw out the air filter. Instead I clean and oil it about every 50000kms.
I may switch back to OEM yet if I see more reports like that.
Message posted via CarKB.com
Fuel economy needs to be tracked over several tanks of gas. Also, different
gas pumps at the station will fill to different levels. Sometimes they leave
alot of room at the top of the tank, others fill it til it gushes out of the
filler neck. best way to measure is to drive a certain number of kms, and
fill up til the first click or so. And use the same pump at the same gas
Message posted via CarKB.com
I think it goes without saying that if you experienced a significant gain
the filter you took out was in pretty bad shape - one way or another.
(That's a common way of troubleshooting problems - by substituting a known
good part.) Intake filters can't improve performance or economy or throttle
response at all, only reduce those by restricting air flow. The idea is to
restrict flow of air as little as possible while preventing dirt from
getting into the engine.
But a cold air intake DOES reduce intake restriction,and also gives a
cooler,denser air charge.
Honda Tuning Magazine did dyno and flow bench tests,and both CAIs tested
gave a 20HP increase on an RSX,and increased torque.
IIRC,the OP installed a CAI,not just a K&N filter.
No sir, the filter I replaced was pretty much new. As I mentioned, I have
also changed back over to OEM (from Honda) and there was a difference. If
the filter is the only thing different, then please tell me what the
As I mentioned, the differences are marginal, but NOTICEABLE.
Michael Pardee wrote:
Tried a K&N air filter on my 01 Prelude. No improvement in mileage. If
there was a performance gain it was virtually unoticeable. But, I did get a
driveability problem which went away when I returned to the stock Honda
You probably needed to reset the ECU. You pull the ECU fuse in the engine
compartment for 30 minutes,then put it back in. Then the ECU relearns it's
parameters when you drive it.
You also won't get much of any performance gain with only the air filter
change;you need to go to a cold air intake(CAI). I got a very noticeable
increase on my 94 Integra GSR.Also a big increase in noise,though.
Honda Tuning Magazine dyno-tested CAIs,short rams,and the K&N filter on an
RSX,and the K&N filter had NO power or torque gains.The CAIs both got 20HP
gains,and the short rams were around 5 HP gains.
The short rams are the easiest to install.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.